Ecosyste.ms: Awesome
An open API service indexing awesome lists of open source software.
https://github.com/Correia-jpv/fucking-awesome-cpp
A curated list of awesome C++ (or C) frameworks, libraries, resources, and shiny things. With repository stars⭐ and forks🍴
https://github.com/Correia-jpv/fucking-awesome-cpp
List: fucking-awesome-cpp
awesome awesome-list c c-plus-plus c-plus-plus-library c-plusplus cpp cpp-library cppcon list lists
Last synced: 16 days ago
JSON representation
A curated list of awesome C++ (or C) frameworks, libraries, resources, and shiny things. With repository stars⭐ and forks🍴
- Host: GitHub
- URL: https://github.com/Correia-jpv/fucking-awesome-cpp
- Owner: Correia-jpv
- License: mit
- Created: 2022-02-01T11:36:27.000Z (almost 3 years ago)
- Default Branch: main
- Last Pushed: 2024-05-22T03:12:36.000Z (7 months ago)
- Last Synced: 2024-05-22T12:18:25.077Z (7 months ago)
- Topics: awesome, awesome-list, c, c-plus-plus, c-plus-plus-library, c-plusplus, cpp, cpp-library, cppcon, list, lists
- Homepage:
- Size: 2.15 MB
- Stars: 3
- Watchers: 2
- Forks: 2
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Contributing: CONTRIBUTING.md
- Funding: .github/FUNDING.yml
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md
Awesome Lists containing this project
- ultimate-awesome - fucking-awesome-cpp - A curated list of awesome C++ (or C) frameworks, libraries, resources, and shiny things. With repository stars⭐ and forks🍴. (Other Lists / Monkey C Lists)
README
# Awesome C++ [](https://awesome.re) [](https://www.trackawesomelist.com/fffaraz/awesome-cpp/)
A curated list of awesome C++ (or C) frameworks, libraries, resources, and shiny things. Inspired by awesome-... stuff.
- [Awesome C++ ](#awesome-c--)
- [Standard Libraries](#standard-libraries)
- [Frameworks](#frameworks)
- [Artificial Intelligence](#artificial-intelligence)
- [Asynchronous Event Loop](#asynchronous-event-loop)
- [Audio](#audio)
- [Biology](#biology)
- [BitTorrent](#bittorrent)
- [Chemistry](#chemistry)
- [CLI](#cli)
- [Compression](#compression)
- [Concurrency](#concurrency)
- [Configuration](#configuration)
- [Containers](#containers)
- [Cryptography](#cryptography)
- [CSV](#csv)
- [Database](#database)
- [Data visualization](#data-visualization)
- [Debug](#debug)
- [Documentation](#documentation)
- [DSP](#dsp)
- [Font](#font)
- [Game Engine](#game-engine)
- [Graph](#graph)
- [GUI](#gui)
- [Graphics](#graphics)
- [Image Processing](#image-processing)
- [Internationalization](#internationalization)
- [Inter-process communication](#inter-process-communication)
- [JSON](#json)
- [Logging](#logging)
- [Machine Learning](#machine-learning)
- [Math](#math)
- [Memory Allocation](#memory-allocation)
- [Multimedia](#multimedia)
- [Networking](#networking)
- [Office Open XML](#office-open-xml)
- [PDF](#pdf)
- [Physics](#physics)
- [Reflection](#reflection)
- [Regular Expression](#regular-expression)
- [Robotics](#robotics)
- [Scientific Computing](#scientific-computing)
- [Scripting](#scripting)
- [Serialization](#serialization)
- [Serial Port](#serial-port)
- [Sorting](#sorting)
- [Video](#video)
- [Virtual Machines](#virtual-machines)
- [Web Application Framework](#web-application-framework)
- [XML](#xml)
- [Yaml](#yaml)
- [Miscellaneous](#miscellaneous)
- [Software](#software)
- [Compiler](#compiler)
- [Online Compiler](#online-compiler)
- [Debugger](#debugger)
- [Integrated Development Environment](#integrated-development-environment)
- [Build Systems](#build-systems)
- [Static Code Analysis](#static-code-analysis)
- [Coding Style Tools](#coding-style-tools)
- [Resources](#resources)
- [API Design](#api-design)
- [Articles](#articles)
- [Books](#books)
- [Coding Standards](#coding-standards)
- [Coding Style](#coding-style)
- [Podcasts](#podcasts)
- [Talks](#talks)
- [Videos](#videos)
- [Websites](#websites)
- [Weblogs](#weblogs)
- [Other Awesome Projects](#other-awesome-projects)
- [Other Awesome Lists](#other-awesome-lists)
- [Jobs](#jobs)
- [Sponsors](#sponsors)
- [Contributing](#contributing)
- [*If you see a project or link here that is no longer maintained or is not a good fit, please submit a pull request to improve this document. Thank you!*](#if-you-see-a-project-or-link-here-that-is-no-longer-maintained-or-is-not-a-good-fit-please-submit-a-pull-request-to-improve-this-document-thank-you)
## Standard Libraries
*C++ Standard Library - including STL Containers, STL Algorithm, STL Functional, etc.*
* 🌎 [C++ Standard Library](en.wikipedia.org/wiki/C%2B%2B_Standard_Library) - A collection of classes and functions, which are written in the core language and part of the C++ ISO Standard itself.
* 🌎 [Standard Template Library](en.wikipedia.org/wiki/Standard_Template_Library) - The Standard Template Library (STL).
* 🌎 [C POSIX library](en.wikipedia.org/wiki/C_POSIX_library) - A specification of a C standard library for POSIX systems.
* [ISO C++ Standards Committee](https://github.com/cplusplus) - ISO/IEC JTC1/SC22/WG21 - The C++ Standards Committee. [website](http://www.open-std.org/JTC1/SC22/WG21/)
* 🌎 [The GNU C Library](www.gnu.org/software/libc/manual) - The purpose of this manual is to tell you how to use the facilities of the GNU C Library.
## Frameworks
*C++ generic frameworks and libraries.*
* 15114⭐ 2640🍴 [abseil-cpp](https://github.com/abseil/abseil-cpp)) - Abseil C++ Common Libraries. [Apache2]
* [Apache C++ Standard Library](http://stdcxx.apache.org/) - STDCXX, A collection of algorithms, containers, iterators, and other fundamental components. [retired] [Apache2]
* [APR](http://apr.apache.org/) - Apache Portable Runtime. Another library of cross-platform utility functions. [Apache2]
* [ASL](http://stlab.adobe.com/) - Adobe Source Libraries provides peer-reviewed and portable C++ source libraries. [MIT]
* [Boost](https://github.com/boostorg) :zap: - A large collection of generic C++ libraries. [Boost] 🌎 [website](www.boost.org)
* 1684⭐ 319🍴 [BDE](https://github.com/bloomberg/bde)) - The BDE Development Environment from Bloomberg Labs. [Apache2]
* 13218⭐ 2427🍴 [C++ Workflow](https://github.com/sogou/workflow)) :zap: - C++ Parallel Computing and Asynchronous Networking Engine. [Apache2]
* 1801⭐ 324🍴 [CGraph](https://github.com/ChunelFeng/CGraph)) - A cross-platform DAG framework based on C++ without any 3rd-party. [MIT]
* 🌎 [Cinder](libcinder.org/) - A community-developed, free and open source library for professional-quality creative coding. [BSD]
* 4026⭐ 565🍴 [Coost](https://github.com/idealvin/coost)) - A tiny boost library in C++11. [MIT]
* [Cxxomfort](http://ryan.gulix.cl/fossil.cgi/cxxomfort/) - A small, header-only library that backports various facilities from more recent C++ Standards to C++03 and later. [MIT]
* 13593⭐ 3382🍴 [Dlib](https://github.com/davisking/dlib)) :zap: - A toolkit for making real world machine learning and data analysis applications in C++. [Boost] [website](http://dlib.net/)
* 8283⭐ 947🍴 [EASTL](https://github.com/electronicarts/EASTL)) - Electronic Arts Standard Template Library. [BSD]
* 2257⭐ 395🍴 [ETL](https://github.com/ETLCPP/etl)) - Embedded Template Library. [MIT]
* 707⭐ 146🍴 [ffead-cpp](https://github.com/sumeetchhetri/ffead-cpp)) - Framework for Enterprise Application Development. [Apache2]
* 28502⭐ 5575🍴 [Folly](https://github.com/facebook/folly)) - An open-source C++ library developed and used at Facebook. [Apache2]
* 2136⭐ 171🍴 [FunctionalPlus](https://github.com/Dobiasd/FunctionalPlus)) - Functional Programming Library for C++. Write concise and readable C++ code. [MIT]
* 🌎 [GLib](wiki.gnome.org/Projects/GLib) - GLib provides the core application building blocks for libraries and applications written in C. [LGPL]
* 158⭐ 13🍴 [itlib](https://github.com/iboB/itlib)) - A collection of std-like single-header C++ libraries [MIT]
* 6692⭐ 1755🍴 [JUCE](https://github.com/julianstorer/JUCE)) - An all-encompassing C++ class library for developing cross-platform software. [Core-Module: ISC, Rest: GPL2/GPL3/Proprietary] [website](http://www.juce.com/)
* 83⭐ 21🍴 [Kigs framework](https://github.com/Kigs-framework/kigs)) - A free and open source C++ modular multi-purpose cross platform RAD framework. [MIT] 🌎 [website](kigs-framework.org/)
* 1660⭐ 362🍴 [libPhenom](https://github.com/facebook/libphenom)) - libPhenom is an eventing framework for building high performance and high scalability systems in C. [Apache2]
* 1320⭐ 348🍴 [LibSourcey](https://github.com/sourcey/libsourcey)) - C++11 evented IO for real-time video streaming and high performance networking applications. [LGPL]
* 440⭐ 96🍴 [LibU](https://github.com/koanlogic/libu)) - A multiplatform utility library written in C. [BSD]
* 46⭐ 6🍴 [libxutils](https://github.com/kala13x/libxutils)) - Simple and yet powerful cross-platform C library providing data structures, algorithms and much more. [MIT]
* [Loki](http://loki-lib.sourceforge.net/) - A C++ library of designs, containing flexible implementations of common design patterns and idioms. [MIT]
* 37⭐ 8🍴 [MiLi](https://github.com/MariadeAnton/MiLi)) - Minimal headers-only C++ Library. [Boost]
* 9982⭐ 2553🍴 [OpenFrameworks](https://github.com/openframeworks/openFrameworks)) - A cross platform open source toolkit for creative coding in C++. [MIT] [website](http://www.openframeworks.cc/)
* [Qt](https://github.com/qt) :zap: - A cross-platform application and UI framework. [GPL/LGPL/Proprietary] 🌎 [website](www.qt.io)
* [Reason](http://code.google.com/p/reason/) - A cross platform framework designed to bring the ease of use of Java, .Net, or Python to developers who require the performance and strength of C++. [GPL2]
* 🌎 [ROOT](root.cern.ch/) - A set of OO frameworks with all the functionality needed to handle and analyze large amounts of data in a very efficient way. Used at CERN. [LGPL]
* 165⭐ 3🍴 [rpp](https://github.com/TheNumbat/rpp)) - Minimal Rust-inspired C++20 STL replacement. [MIT]
* 522⭐ 12🍴 [SaneCppLibraries](https://github.com/Pagghiu/SaneCppLibraries)) - a set of C++ platform abstraction libraries for macOS, Windows and Linux. [MIT] 🌎 [website](pagghiu.github.io/SaneCppLibraries/)
* 8417⭐ 1562🍴 [Seastar](https://github.com/scylladb/seastar)) - An advanced, open-source C++ framework for high-performance server applications on modern hardware. [Apache-2.0 License] [seastar.io](http://seastar.io/)
* [STLport](http://www.stlport.org/) - An exemplary version of STL. [Free]
* [STXXL](http://stxxl.sourceforge.net/) - Standard Template Library for Extra Large Data Sets. [Boost]
* 4891⭐ 725🍴 [tbox](https://github.com/tboox/tbox)) - A glib-like multi-platform c library. [Apache2] [website](http://tboox.org/)
* [Ultimate++](http://www.ultimatepp.org/) - A C++ cross-platform rapid application development framework. [BSD]
* [Windows Template Library](http://sourceforge.net/projects/wtl/) - A C++ library for developing Windows applications and UI components. [Public]
* 358⭐ 18🍴 [Yomm2](https://github.com/jll63/yomm2)) - Fast, Orthogonal, Open multi-methods. Supersedes 117⭐ 17🍴 [Yomm11](https://github.com/jll63/yomm11)) [Boost]
## Artificial Intelligence
* 107⭐ 20🍴 [ANNetGPGPU](https://github.com/ANNetGPGPU/ANNetGPGPU)) - A GPU (CUDA) based Artificial Neural Network library. [LGPL]
* 455⭐ 129🍴 [btsk](https://github.com/aigamedev/btsk)) - Game Behavior Tree Starter Kit. [zlib]
* [Evolving Objects](http://eodev.sourceforge.net/) - A template-based, ANSI-C++ evolutionary computation library which helps you to write your own stochastic optimization algorithms insanely fast. [LGPL]
* 1074⭐ 237🍴 [frugally-deep](https://github.com/Dobiasd/frugally-deep)) - Header-only library for using Keras models in C++. [MIT]
* 2014⭐ 238🍴 [Genann](https://github.com/codeplea/genann)) - Simple neural network library in C. [zlib]
* 20791⭐ 6788🍴 [MXNet](https://github.com/apache/incubator-mxnet)) - Lightweight, Portable, Flexible Distributed/Mobile Deep Learning with Dynamic, Mutation-aware Dataflow Dep Scheduler; for Python, R, Julia, Scala, Go, JavaScript and more. 🌎 [website](mxnet.apache.org)
* 84708⭐ 22810🍴 [PyTorch](https://github.com/pytorch/pytorch)) - Tensors and Dynamic neural networks in Python with strong GPU acceleration. 🌎 [website](pytorch.org)
* 5294⭐ 497🍴 [flashlight](https://github.com/flashlight/flashlight)) - Flashlight is a fast, flexible machine learning library written entirely in C++. [BSD]
* 6635⭐ 1628🍴 [Recast/Detour](https://github.com/recastnavigation/recastnavigation)) - (3D) Navigation mesh generator and pathfinder, mostly for games. [zlib]
* 186660⭐ 74353🍴 [TensorFlow](https://github.com/tensorflow/tensorflow)) - An open source software library for numerical computation using data flow graphs. [Apache]
* 3643⭐ 1011🍴 [oneDNN](https://github.com/oneapi-src/oneDNN)) - An open-source cross-platform performance library for deep learning applications. [Apache] 🌎 [website](01.org/onednn)
* 17534⭐ 4282🍴 [CNTK](https://github.com/Microsoft/CNTK)) - Microsoft Cognitive Toolkit (CNTK), an open source deep-learning toolkit. [Boost]
* 5864⭐ 1389🍴 [tiny-dnn](https://github.com/tiny-dnn/tiny-dnn)) - A header only, dependency-free deep learning framework in C++11. [BSD]
* 905⭐ 180🍴 [Veles](https://github.com/Samsung/veles)) - Distributed platform for rapid Deep learning application development. [Apache]
* 14333⭐ 5328🍴 [Kaldi](https://github.com/kaldi-asr/kaldi)) - Toolkit for speech recognition. [Apache]
## Asynchronous Event Loop
* ?⭐ ?🍴 [Asio](https://github.com/chriskohlhoff/asio/)) - A cross-platform C++ library for network and low-level I/O programming that provides developers with a consistent asynchronous model using a modern C++ approach. [Boost] [website](http://think-async.com/)
* 1256⭐ 418🍴 [Boost.Asio](https://github.com/boostorg/asio)) - A cross-platform C++ library for network and low-level I/O programming. [Boost] 🌎 [website](boost.org/libs/asio)
* 3207⭐ 544🍴 [C++ Actor Framework](https://github.com/actor-framework/actor-framework)) - An Open Source Implementation of the Actor Model in C++. [BSD-3-Clause] [website](http://actor-framework.org/)
* 205⭐ 10🍴 [Ichor](https://github.com/volt-software/ichor)) - An event queue which focuses on thread safety and provides dependency injection. [MIT]
* [libev](http://libev.schmorp.de/) - A full-featured and high-performance event loop that is loosely modelled after libevent, but without its limitations and bugs. [BSD and GPL]
* [libevent](http://libevent.org/) - An event notification library. [BSD]
* 6853⭐ 1249🍴 [libhv](https://github.com/ithewei/libhv)) - Cross-platform event loop library. [BSD]
* 24432⭐ 3608🍴 [libuv](https://github.com/libuv/libuv)) - Cross-platform asynchronous I/O. [BSD]
* 679⭐ 92🍴 [promise-cpp](https://github.com/xhawk18/promise-cpp)) - Header only library that implements Promise/A+ standard. [Anti-996]
* 1877⭐ 214🍴 [uvw](https://github.com/skypjack/uvw)) - C++ wrapper for libuv. [MIT]
* 782⭐ 206🍴 [uv-cpp](https://github.com/wlgq2/uv-cpp)) - a simple interface, high-performance network library based on C++11. [MIT]
## Audio
*Audio, Sound, Music, Digitized Voice Libraries*
* 37⭐ 4🍴 [Amplitude Audio SDK](https://github.com/SparkyStudios/AmplitudeAudioSDK)) - A cross-platform audio engine designed with the needs of games in mind. [Apache-2.0] 🌎 [website](amplitudeaudiosdk.com)
* 3327⭐ 383🍴 [Aubio](https://github.com/aubio/aubio)) - A library for audio and music analysis.[GPL-3.0] 🌎 [website](aubio.org/)
* 969⭐ 203🍴 [AudioFile](https://github.com/adamstark/AudioFile)) - A simple C++ library for reading and writing audio files. [MIT]
* 2926⭐ 121🍴 [audioFlux](https://github.com/libAudioFlux/audioFlux)) - A C library for audio and music analysis, feature extraction. [MIT]
* 1282⭐ 206🍴 [dr_libs](https://github.com/mackron/dr_libs)) - Single file audio decoding libraries for C and C++. [Unlicense]
* [FMOD](http://www.fmod.org/) - An easy to use crossplatform audio engine and audio content creation tool for games. [Free for non-commercial/Commercial]
* 🌎 [KFR](www.kfrlib.com/) - Fast, modern C++ DSP framework, FFT, FIR/IIR filters, Sample Rate Conversion. [GPL/Proprietary]
* 🌎 [LAME](lame.sourceforge.io/using.php) - LAME is a high quality MPEG Audio Layer III (MP3) encoder. [LGPL]
* ?⭐ ?🍴 [libsndfile](https://github.com/erikd/libsndfile/)) - C library with C++ wrapper for reading and writing files containing sampled sound through one standard library interface. [LGPL-2.1] [website](http://www.mega-nerd.com/libsndfile/)
* 1953⭐ 231🍴 [libsoundio](https://github.com/andrewrk/libsoundio)) - C library for cross-platform real-time audio input and output. [MIT] [website](http://libsound.io/)
* 1594⭐ 278🍴 [Maximilian](https://github.com/micknoise/Maximilian)) - C++ Audio and Music DSP Library. [MIT]
* [OpenAL](http://www.openal.org/) - Open Audio Library - A crossplatform audio API. [BSD/LGPL/Proprietary]
* 4118⭐ 363🍴 [miniaudio](https://github.com/mackron/miniaudio)) - Single file audio playback and capture library. [Unlicense] 🌎 [website](miniaud.io/)
* 244⭐ 34🍴 [ni-media](https://github.com/NativeInstruments/ni-media)) - C++ library for reading and writing audio files. [MIT]
* [Opus](http://opus-codec.org/) - A totally open, royalty-free, highly versatile audio codec. [BSD]
* [PortAudio](http://www.portaudio.com/) - PortAudio is a free, cross-platform, open-source, audio I/O library. [MIT]
* 4160⭐ 907🍴 [rnnoise](https://github.com/xiph/rnnoise)) - Recurrent neural network for audio noise reduction. [BSD-3-Clause]
* 210⭐ 23🍴 [SELA](https://github.com/sahaRatul/sela)) - SimplE Lossless Audio. [MIT]
* 1798⭐ 284🍴 [SoLoud](https://github.com/jarikomppa/soloud)) - Easy, portable audio engine for games. [zlib]
* [Speex](http://www.speex.org/) - A free codec for free speech. Obsoleted by Opus. [BSD]
* 523⭐ 63🍴 [Tonic](https://github.com/TonicAudio/Tonic)) - Easy and efficient audio synthesis in C++. [Unlicense]
* [Vorbis](http://xiph.org/vorbis/) - Ogg Vorbis is a fully open, non-proprietary, patent-and-royalty-free, general-purpose compressed audio format. [BSD]
* 1617⭐ 212🍴 [minimp3](https://github.com/lieff/minimp3)) - Public domain, header-only MP3 decoder with clean-room implementation. [CC0]
* 687⭐ 185🍴 [Verovio](https://github.com/rism-ch/verovio)) - Verovio is a fast and lightweight music notation engraving library. [LGPL] 🌎 [website](www.verovio.org)
* ?⭐ ?🍴 [Wav2Letter++](https://github.com/facebookresearch/wav2letter/)) - Public domain, a fast open source speech processing toolkit written entirely in C++ and uses the ArrayFire tensor library and the flashlight machine learning library for maximum efficiency. [BSD]
## Biology
*Bioinformatics, Genomics, Biotech*
* [BioC++](http://biocpp.sourceforge.net/) - C++ Computational Libraries for Bioinformatics. [BSD]
* [Chaste](http://www.cs.ox.ac.uk/chaste/) - An open source C++ library for the computational simulation of mathematical models developed for physiology and biology. [BSD]
* [libsequence](http://molpopgen.github.io/libsequence/) - A C++ library for representing and analyzing population genetics data. [GPL]
* [SeqAn](http://www.seqan.de/) - Algorithms and data structures for the analysis of sequences with the focus on biological data. [BSD/3-clause]
* 622⭐ 221🍴 [Vcflib](https://github.com/ekg/vcflib)) - A C++ library for parsing and manipulating VCF files. [MIT]
* 104⭐ 25🍴 [Wham](https://github.com/zeeev/wham)) - Structural variants (SVs) in Genomes by directly applying association tests to BAM files. [MIT]
## BitTorrent
* 702⭐ 168🍴 [jech/dht](https://github.com/jech/dht)) - BitTorrent DHT library in C. [MIT]
* 5282⭐ 995🍴 [libtorrent](https://github.com/arvidn/libtorrent)) (a.k.a. libtorrent-rasterbar) - An efficient feature complete C++ bittorrent implementation. [BSD]
* 897⭐ 209🍴 [LibTorrent](https://github.com/rakshasa/libtorrent)) (a.k.a. libtorrent-rakshasa) - BitTorrent library. [GPL]
* 1110⭐ 267🍴 [libutp](https://github.com/bittorrent/libutp)) - uTorrent Transport Protocol library. [MIT]
## Chemistry
*Chemistry, Quantum Chemistry, Solid-State Chemistry/Physics, Geochemistry, Biochemistry*
* 35⭐ 10🍴 [d-SEAMS](https://github.com/d-SEAMS/seams-core)) - A molecular dynamics trajectory analysis engine in C++ and Lua with Nix. It is an acronym for Deferred Structural Elucidation Analysis for Molecular Simulations. [GPL] 🌎 [website](dseams.info)
* 720⭐ 333🍴 [gromacs](https://github.com/gromacs/gromacs)) - A message-passing parallel molecular dynamics implementation. [GPL] [website](http://www.gromacs.org)
* 167⭐ 57🍴 [Reaktoro](https://github.com/reaktoro/reaktoro)) - A computational framework in C++ and Python for modeling chemically reactive systems. [LGPL] 🌎 [website](reaktoro.org)
* 2264⭐ 1727🍴 [LAMMPS](https://github.com/lammps/lammps)) - A classical molecular dynamics code with a focus on materials modeling. It's an acronym for Large-scale Atomic/Molecular Massively Parallel Simulator. [GPL] 🌎 [website](lammps.sandia.gov/)
* 182⭐ 62🍴 [MADNESS](https://github.com/m-a-d-n-e-s-s/madness)) - Multiresolution Adaptive Numerical Environment for Scientific Simulation. [GPL] 182⭐ 62🍴 [website](https://github.com/m-a-d-n-e-s-s/madness))
* 68⭐ 24🍴 [MPQC](https://github.com/ValeevGroup/mpqc)) - The Massively Parallel Quantum Chemistry program, MPQC, computes properties of atoms and molecules from first principles using the time independent Schrödinger equation. [GPL] 🌎 [website](mpqc.org/)
* [ORCA](https://en.wikipedia.org/wiki/ORCA_(quantum_chemistry_program)) - An ab initio quantum chemistry program package that contains modern electronic structure methods. [Academic] 🌎 [website](orcaforum.kofo.mpg.de/)
* 991⭐ 450🍴 [Psi](https://github.com/psi4/psi4)) - An ab initio computational chemistry package. [GPL] 🌎 [website](psicode.org/)
## CLI
*Console/Terminal User Interface, Command Line Interface*
* 1335⭐ 93🍴 [Argh!](https://github.com/adishavit/argh)) - A minimalist, frustration-free, header-only argument handler. [BSD]
* 2722⭐ 250🍴 [argparse](https://github.com/p-ranav/argparse)) - Argument Parser for Modern C++. [MIT]
* 1412⭐ 158🍴 [args](https://github.com/taywee/args)) - A simple header-only C++ argument parser library. [MIT]
* 141⭐ 2🍴 [barkeep](https://github.com/oir/barkeep)) - Small C++ header to display async animations, counters, and progress bars. [Apache-2.0] 🌎 [website](oir.github.io/barkeep/)
* 110⭐ 107🍴 [Boost.Program_options](https://github.com/boostorg/program_options)) - A library to obtain program options via conventional methods such as command line and config file. [Boost] 🌎 [website](boost.org/libs/program_options)
* 1238⭐ 140🍴 [cli](https://github.com/daniele77/cli)) - A cross-platform header only C++14 library for interactive command line interfaces (Cisco style). [Boost]
* 3407⭐ 358🍴 [CLI11](https://github.com/CLIUtils/CLI11)) - Header only single or multi-file C++11 library for simple and advanced CLI parsing. [BSD]
* 1229⭐ 151🍴 [clipp](https://github.com/muellan/clipp)) - Easy to use, powerful and expressive command line argument handling for C++11/14/17 contained in a single header file. [MIT]
* 533⭐ 55🍴 [cpp-terminal](https://github.com/jupyter-xeus/cpp-terminal)) - Small header only C++ library for writing multiplatform terminal applications. [MIT]
* 24⭐ 4🍴 [Ctrl+C](https://github.com/evgenykislov/ctrl-c)) - Crossplatform C++11 library to handle Ctrl+C event in custom functions. [MIT]
* 4256⭐ 590🍴 [cxxopts](https://github.com/jarro2783/cxxopts)) - Lightweight C++ command line option parser. [MIT]
* 1046⭐ 146🍴 [docopt.cpp](https://github.com/docopt/docopt.cpp)) - A library to generate option parser from docstring. [MIT/Boost]
* 1012⭐ 55🍴 [FINAL CUT](https://github.com/gansm/finalcut)) - Library for creating terminal applications with text-based widgets. [LGPL]
* 7028⭐ 427🍴 [FTXUI](https://github.com/ArthurSonzogni/FTXUI)) - C++ Functional Terminal User Interface. [MIT]
* 🌎 [gflags](gflags.github.io/gflags/) - Commandline flags module for C++. [BSD]
* 3122⭐ 130🍴 [imtui](https://github.com/ggerganov/imtui)) - Immediate Mode Text-based User Interface. [MIT]
* ?⭐ ?🍴 [indicators](https://github.com/p-ranav/indicators/)) - Activity indicators for Modern C++. [MIT]
* 3817⭐ 669🍴 [linenoise](https://github.com/antirez/linenoise)) - A small self-contained alternative to readline and libedit. [BSD-2-Clause]
* 359⭐ 52🍴 [linenoise-ng](https://github.com/arangodb/linenoise-ng)) - A small, portable GNU readline replacement for Linux, Windows and MacOS which is capable of handling UTF-8 characters. [BSD]
* 489⭐ 59🍴 [Lyra](https://github.com/bfgroup/Lyra)) - A simple to use, composable, command line parser for C++ 11 and beyond. [Boost]
* [Ncurses](http://invisible-island.net/ncurses/) - A terminal user interface. [MIT]
* 834⭐ 37🍴 [oof](https://github.com/s9w/oof)) - Convenient, high-performance RGB color and position control for console output. [MIT]
* 1048⭐ 180🍴 [PDCurses](https://github.com/wmcbrine/PDCurses)) - Public domain curses library with both source code and pre-compiled library available. [PublicDomain]
* 168⭐ 32🍴 [popl](https://github.com/badaix/popl)) - A single-header templated command line arguments and ini file parser for C++ 11 and beyond. [MIT]
* 691⭐ 108🍴 [replxx](https://github.com/AmokHuginnsson/replxx)) - A readline and libedit replacement that supports UTF-8, syntax highlighting, hints, works on Unix and Windows. [BSD]
* 1960⭐ 141🍴 [tabulate](https://github.com/p-ranav/tabulate)) - Table Maker for Modern C++. [MIT]
* [TCLAP](http://tclap.sourceforge.net) - A mature, stable and feature-rich library for defining and accessing command line arguments in ANSI C++. [MIT]
* 1973⭐ 187🍴 [termbox](https://github.com/nsf/termbox)) - A C library for writing text-based user interfaces. [MIT]
* 674⭐ 47🍴 [TermOx](https://github.com/a-n-t-h-o-n-y/TermOx)) - C++17 Terminal User Interface(TUI) Library. [MIT]
* 134⭐ 9🍴 [tuibox](https://github.com/Cubified/tuibox)) - A single-header terminal UI (TUI) library, capable of creating mouse-driven, interactive applications on the command line. [MIT]
## Compression
*Compression and Archiving Libraries*
* 654⭐ 119🍴 [bit7z](https://github.com/rikyoz/bit7z)) - A C++ static library offering a clean and simple interface to the 7-zip shared libraries. [MPL2]
* 13629⭐ 1244🍴 [Brotli](https://github.com/google/brotli)) - Brotli compression format. Developed by Google. [MIT]
* [bzip2](http://www.bzip.org/) - A freely available, patent free, high-quality data compressor. [BSD]
* 693⭐ 38🍴 [bzip3](https://github.com/kspalaiologos/bzip3)) - A better and stronger spiritual successor to BZip2. [LGPL]
* 442⭐ 84🍴 [FastLZ](https://github.com/ariya/FastLZ)) - Small & portable byte-aligned LZ77 compression. [MIT]
* 1341⭐ 144🍴 [FiniteStateEntropy](https://github.com/Cyan4973/FiniteStateEntropy)) - New generation entropy codecs : Finite State Entropy and Huff0.
* 1333⭐ 180🍴 [heatshrink](https://github.com/atomicobject/heatshrink)) - data compression library for embedded/real-time systems [ISC]
* 138⭐ 3🍴 [Kanzi](https://github.com/flanglet/kanzi-cpp)) - a modern, modular, portable and efficient lossless data compressor implemented in C++. [Apache-2.0]
* 🌎 [KArchive](api.kde.org/frameworks/karchive/html/index.html) - A library for creating, reading, writing and manipulating file archives like zip and tar. It also provides transparent compression and decompression of data, using formats like gzip, via a subclass of QIODevice. [LGPL]
* 3059⭐ 771🍴 [libarchive](https://github.com/libarchive/libarchive)) - Multi-format archive and compression library. [New BSD] [website](http://www.libarchive.org/)
* 10454⭐ 1394🍴 [LZ4](https://github.com/lz4/lz4)) - Extremely Fast Compression algorithm. [BSD] [website](http://www.lz4.org/)
* 1771⭐ 179🍴 [LZFSE](https://github.com/lzfse/lzfse)) - LZFSE compression library and command line tool. Developed by Apple.
* 🌎 [LZHAM](code.google.com/p/lzham/) - Lossless data compression library with a compression ratio similar to LZMA but with much faster decompression. [BSD]
* 🌎 [LZMA](sourceforge.net/projects/sevenzip/files/7-Zip) :zap: - The default and general compression method of 7z format. [PublicDomain] 🌎 [website](www.7-zip.org)
* [LZMAT](http://www.matcode.com/lzmat.htm) - An extremely fast real-time lossless data compression library. [GPL]
* 2243⭐ 326🍴 [miniz](https://github.com/richgel999/miniz)) - Single C source file Deflate/Inflate compression library with zlib-compatible API, ZIP archive reading/writing, PNG writing. [MIT]
* 1245⭐ 435🍴 [Minizip](https://github.com/nmoinvaz/minizip)) - Zlib with latest bug fixes that supports PKWARE disk spanning, AES encryption, and IO buffering. [zlib]
* 1245⭐ 435🍴 [minizip-ng](https://github.com/zlib-ng/minizip-ng)) - Fork of the popular zip manipulation library found in the zlib distribution. [zlib]
* 🌎 [PhysicsFS](icculus.org/physfs/) - A library to provide abstract access to various archives. It is intended for use in video games, and the design was somewhat inspired by Quake 3's file subsystem. [zlib]
* 375⭐ 7🍴 [Rapidgzip](https://github.com/mxmlnkn/rapidgzip)) - Gzip Decompression and Random Access for Modern Multi-Core Machines. [Apache-2/MIT]
* 1174⭐ 130🍴 [smaz](https://github.com/antirez/smaz)) - Small strings compression library. [BSD]
* 🌎 [Snappy](google.github.io/snappy/) - A fast compressor/decompressor. [BSD]
* [ZLib](http://zlib.net/) - A very compact compression library for data streams. [zlib]
* 1580⭐ 264🍴 [zlib-ng](https://github.com/zlib-ng/zlib-ng)) - zlib for the "next generation" systems. Drop-In replacement with some serious optimizations. [zlib]
* 23869⭐ 2115🍴 [zstd](https://github.com/facebook/zstd)) - Zstandard - Fast real-time compression algorithm. Developed by Facebook. [BSD]
* [ZZIPlib](http://zziplib.sourceforge.net/) - Provides read access on ZIP-archives. [MPL/LGPL]
## Concurrency
*Concurrency and Multithreading*
* 4⭐ 0🍴 [alpaka](https://github.com/ComputationalRadiationPhysics/alpaka)) - Abstraction library for parallel kernel acceleration. [LGPLv3+]
* 4580⭐ 534🍴 [ArrayFire](https://github.com/arrayfire/arrayfire)) - A general purpose GPU library. [BSD]
* 1355⭐ 200🍴 [Async++](https://github.com/Amanieu/asyncplusplus)) - A lightweight concurrency framework for C++11, inspired by the Microsoft PPL library and the N3428 C++ standard proposal. [MIT]
* 1563⭐ 333🍴 [Boost.Compute](https://github.com/boostorg/compute)) - A C++ GPU Computing Library for OpenCL. [Boost] 🌎 [website](boost.org/libs/compute)
* 372⭐ 65🍴 [Bolt](https://github.com/HSA-Libraries/Bolt)) - A C++ template library optimized for GPUs. [Apache2]
* 2230⭐ 256🍴 [BS::thread_pool](https://github.com/bshoshany/thread-pool)) - A fast, lightweight, and easy-to-use C++17 thread pool library [MIT]
* 416⭐ 30🍴 [Channel](https://github.com/andreiavrammsd/cpp-channel)) - Thread-safe container for sharing data between threads. [MIT]
* 2406⭐ 314🍴 [ck](https://github.com/concurrencykit/ck)) - Concurrency primitives, safe memory reclamation mechanisms and non-blocking data structures. [BSD]
* 10067⭐ 1695🍴 [concurrentqueue](https://github.com/cameron314/concurrentqueue)) - A fast multi-producer, multi-consumer lock-free concurrent queue for C++11. [BSD,Boost]
* 308⭐ 5🍴 [Coros](https://github.com/mtmucha/coros)) - An easy-to-use and fast library for task-based parallelism, utilizing coroutines. [BSL-1.0]
* 83⭐ 50🍴 [CUB](https://github.com/NVlabs/cub)) - CUB provides state-of-the-art, reusable software components for every layer of the CUDA programming mode. [New BSD]
* 800⭐ 80🍴 [cuda-api-wrappers](https://github.com/eyalroz/cuda-api-wrappers)) - Lightweight, Modern-C++ wrappers for the CUDA GPU programming runtime API. [BSD]
* 4⭐ 0🍴 [cupla](https://github.com/ComputationalRadiationPhysics/cupla)) - C++ API to run CUDA/C++ on OpenMP, Threads, TBB, ... through Alpaka. [LGPLv3+]
* 1025⭐ 130🍴 [C++React](https://github.com/schlangster/cpp.react)) - A reactive programming library for C++11. [Boost]
* 937⭐ 80🍴 [FiberTaskingLib](https://github.com/RichieSams/FiberTaskingLib)) - Task-based multi-threading library that supports task graphs with arbitrary dependencies. [Apache]
* ?⭐ ?🍴 [HPX](https://github.com/STEllAR-GROUP/hpx/)) - A general purpose C++ runtime system for parallel and distributed applications of any scale. [Boost]
* 448⭐ 44🍴 [Intel Games Task Scheduler](https://github.com/GameTechDev/GTS-GamesTaskScheduler)) - A task scheduling framework designed for the needs of game developers. [MIT]
* 724⭐ 113🍴 [Intel Parallel STL](https://github.com/intel/parallelstl)) - Intel® implementation of C++17 STL for C++11 and above. [Apache2]
* 🌎 [Intel TBB](www.threadingbuildingblocks.org/) - Intel® Threading Building Blocks. [Apache2]
* 1408⭐ 153🍴 [junction](https://github.com/preshing/junction)) - A library of concurrent data structures in C++. [BSD]
* 2019⭐ 438🍴 [Kokkos](https://github.com/kokkos/kokkos)) - A performance portable programming model for parallel execution and memory abstraction. [BSD]
* 2568⭐ 360🍴 [libcds](https://github.com/khizmax/libcds)) - A C++ library of Concurrent Data Structures. [BSD]
* 52⭐ 9🍴 [Libclsph](https://github.com/libclsph/libclsph)) - An OpenCL based GPU accelerated SPH fluid simulation library. [MIT]
* ?⭐ ?🍴 [libdill](https://github.com/sustrik/libdill/)) - Introduces structured concurrency in C. [MIT]
* 2476⭐ 461🍴 [libdispatch](https://github.com/apple/swift-corelibs-libdispatch)) - Grand Central Dispatch (GCD), developed by Apple Inc., is a task parallelism technology based on the thread pool pattern. libdispatch is a library that provides the implementation of GCD's services. [Apache-2.0] 🌎 [website](apple.github.io/swift-corelibs-libdispatch/)
* 618⭐ 26🍴 [libfork](https://github.com/ConorWilliams/libfork)) - A bleeding-edge, lock-free, wait-free, continuation-stealing tasking library built on C++20's coroutines. [MPL-2.0] 🌎 [website](conorwilliams.github.io/libfork/)
* ?⭐ ?🍴 [libmill](https://github.com/sustrik/libmill/)) - Introduces Go-style concurrency in C. [MIT]
* 1886⭐ 193🍴 [marl](https://github.com/google/marl)) - Marl is a hybrid thread / fiber task scheduler written in C++ 11. [Apache-2.0]
* 1680⭐ 279🍴 [moderngpu](https://github.com/moderngpu/moderngpu)) - moderngpu is a productivity library for general-purpose computing on GPUs. It is a header-only C++ library written for CUDA. The unique value of the library is in its accelerated primitives for solving irregularly parallel problems. [FreeBSD & Copyright, Sean Baxter]
* 3282⭐ 831🍴 [NCCL](https://github.com/NVIDIA/nccl)) - Optimized primitives for collective multi-GPU communication. [BSD]
* 1149⭐ 80🍴 [Neco](https://github.com/tidwall/neco)) - Concurrency library for C (coroutines). [MIT]
* 🌎 [OpenCL](www.khronos.org/opencl/) - The open standard for parallel programming of heterogeneous systems.
* [OpenMP](http://openmp.org/) - The OpenMP API.
* 349⭐ 33🍴 [rotor](https://github.com/basiliscos/cpp-rotor)) - Event loop friendly C++ actor micro framework. [MIT]
* 498⭐ 46🍴 [SObjectizer](https://github.com/Stiffstream/sobjectizer)) - An implementation of Actor, Publish-Subscribe, and CSP models in one rather small C++ framework. [BSD-3-Clause]
* 579⭐ 95🍴 [Quantum](https://github.com/bloomberg/quantum)) - A powerful C++ coroutine dispatcher framework built on top of 🌎 [Boost.Coroutine2](boost.org/libs/coroutine2).
* [RaftLib](http://raftlib.io/) - The RaftLib C++ library, streaming/dataflow concurrency via C++ iostream-like operators. [Apache2]
* 3774⭐ 664🍴 [readerwriterqueue](https://github.com/cameron314/readerwriterqueue)) - A fast single-producer, single-consumer lock-free queue for C++. [BSD]
* 1174⭐ 83🍴 [stdgpu](https://github.com/stotko/stdgpu)) - Efficient STL-like Data Structures on the GPU. [Apache2]
* 10306⭐ 1216🍴 [Taskflow](https://github.com/taskflow/taskflow)) - A General-purpose Parallel and Heterogeneous Task Programming System. (renamed from Cpp-Taskflow) [MIT]
* 7985⭐ 2257🍴 [ThreadPool](https://github.com/progschj/ThreadPool)) - A simple C++11 Thread Pool implementation [zlib]
* [Thrust](http://thrust.github.io/) - A parallel algorithms library which resembles the C++ Standard Template Library (STL). [Apache2]
* 623⭐ 47🍴 [transwarp](https://github.com/bloomen/transwarp)) - A header-only C++ library for task concurrency. [MIT]
* 702⭐ 82🍴 [VexCL](https://github.com/ddemidov/vexcl)) - A C++ vector expression template library for OpenCL/CUDA. [MIT]
* [STAPL](http://parasol-lab.gitlab.io/stapl-home/) - A C++ parallel programming framework designed to work on both shared and distributed memory parallel computers. [BSD]
* 2326⭐ 209🍴 [concurrencpp](https://github.com/David-Haim/concurrencpp)) - A general concurrency library containing tasks, executors, timers and C++20 coroutines to rule them all.
## Configuration
*Configuration files, INI files*
* 371⭐ 67🍴 [inifile-cpp](https://github.com/Rookfighter/inifile-cpp)) - A header-only and easy to use Ini file parser for C++. [MIT]
* 2492⭐ 493🍴 [inih](https://github.com/benhoyt/inih)) - Simple .INI file parser in C, good for embedded systems. [BSD-3-Clause]
* 441⭐ 94🍴 [inih](https://github.com/jtilly/inih)) - Single header only C++ version of 2492⭐ 493🍴 [inih](https://github.com/benhoyt/inih)). [BSD-3-Clause]
* 38⭐ 7🍴 [ini-cpp](https://github.com/SSARCandy/ini-cpp)) - Single header only C++ version, with some handy read/write interface, extend from 2492⭐ 493🍴 [inih](https://github.com/benhoyt/inih)). [BSD-3-Clause] 🌎 [website](ssarcandy.tw/ini-cpp/index.html)
* 984⭐ 430🍴 [iniparser](https://github.com/ndevilla/iniparser)) - INI file parser. [MIT]*
* 285⭐ 54🍴 [inipp](https://github.com/mcmtroffaes/inipp)) - Simple header-only C++ ini parser and generator. [MIT]
* 1125⭐ 366🍴 [libconfig](https://github.com/hyperrealm/libconfig)) - C, C++ library for processing structured configuration files. [LGPL-2.1] 🌎 [website](hyperrealm.github.io/libconfig/)
* 478⭐ 110🍴 [libconfuse](https://github.com/martinh/libconfuse)) - Small configuration file parser library for C. [ISC]
* 541⭐ 113🍴 [mINI](https://github.com/metayeti/mINI)) - INI file reader and writer. [MIT]
* 1130⭐ 319🍴 [simpleini](https://github.com/brofield/simpleini)) - Cross-platform C++ library providing a simple API to read and write INI-style configuration files. [MIT]
* 1592⭐ 152🍴 [toml++](https://github.com/marzer/tomlplusplus)) - Header-only TOML parser and serializer for C++17 and later. [MIT] 🌎 [website](marzer.github.io/tomlplusplus/)
* 1049⭐ 163🍴 [toml11](https://github.com/ToruNiina/toml11)) - a C++11 (or later) header-only toml parser/encoder depending only on C++ standard library. [MIT]
## Containers
* 74⭐ 26🍴 [C++ B-tree](https://github.com/algorithm-ninja/cpp-btree)) - A template library that implements ordered in-memory containers based on a B-tree data structure. [Apache2]
* 154⭐ 14🍴 [dynamic_bitset](https://github.com/pinam45/dynamic_bitset)) - Simple Useful Libraries: C++17/20 header-only dynamic bitset. [MIT] 🌎 [website](pinam45.github.io/dynamic_bitset/)
* 395⭐ 38🍴 [fixed-containers](https://github.com/teslamotors/fixed-containers)) - Header-only C++20 library that provides fixed capacity constexpr containers. [MIT]
* 1720⭐ 185🍴 [flat_hash_map](https://github.com/skarupke/flat_hash_map)) - A very fast flat hashtable with Fibonacci hashing.
* 1336⭐ 105🍴 [frozen](https://github.com/serge-sans-paille/frozen)) - a header-only, constexpr alternative to gperf for C++14 users. [Apache-2.0]
* 255⭐ 83🍴 [Hashmaps](https://github.com/goossaert/hashmap)) - Implementation of open addressing hash table algorithms in C++. [MIT]
* 796⭐ 114🍴 [hat-trie](https://github.com/Tessil/hat-trie)) - C++ implementation of a fast and memory efficient HAT-trie. [MIT]
* 730⭐ 65🍴 [Hopscotch map](https://github.com/Tessil/hopscotch-map)) - A fast header-only hash map which uses hopscotch hashing for collisions resolution. [MIT]
* 286⭐ 78🍴 [LSHBOX](https://github.com/RSIA-LIESMARS-WHU/LSHBOX)) - A c++ toolbox of locality-sensitive hashing (LSH), provides several popular LSH algorithms, also support Python and MATLAB. [GPL]
* 2578⭐ 244🍴 [parallel-hashmap](https://github.com/greg7mdp/parallel-hashmap)) - A family of header-only, very fast and memory-friendly hashmap and btree containers [Apache2] 🌎 [website](greg7mdp.github.io/parallel-hashmap/)
* 792⭐ 93🍴 [PGM-index](https://github.com/gvinciguerra/PGM-index)) - A data structure that enables fast lookup, predecessor, range searches and updates in arrays of billions of items using orders of magnitude less space than traditional indexes. [Apache2] 🌎 [website](pgm.di.unipi.it)
* 398⭐ 33🍴 [plf::colony](https://github.com/mattreecebentley/plf_colony)) - An unordered "bag"-type container which outperforms std containers in high-modification scenarios while maintaining permanent pointers to non-erased elements regardless of insertion/erasure. [zLib] [website](http://www.plflib.org/colony.htm)
* 150⭐ 21🍴 [plf::list](https://github.com/mattreecebentley/plf_list)) - A std::list implementation which removes range splicing in order to enable cache-friendlier structure, yielding significant performance gains. [zLib] [website](http://www.plflib.org/list.htm)
* 64⭐ 6🍴 [plf::stack](https://github.com/mattreecebentley/plf_stack)) - A replacement container for the std::stack container adaptor, with better performance than any std container in a stack context. [zLib] [website](http://www.plflib.org/stack.htm)
* 154⭐ 12🍴 [ring_span lite](https://github.com/martinmoene/ring-span-lite)) - A simplified implementation of Arthur O'Dwyer's ring_span implementation ie. a circular buffer view. [MIT]
* 1534⭐ 147🍴 [robin-hood-hashing](https://github.com/martinus/robin-hood-hashing)) - Fast & memory efficient hashtable based on robin hood hashing for C++14. [MIT]
* 1285⭐ 118🍴 [robin-map](https://github.com/Tessil/robin-map)) - Fast hash map and hash set using robin hood hashing. [MIT]
* 1255⭐ 124🍴 [sparsepp](https://github.com/greg7mdp/sparsepp)) - A fast, memory efficient hash map for C++. [BSD 3-clause]
* 96⭐ 20🍴 [st_tree](https://github.com/erikerlandson/st_tree)) - A fast and flexible c++ template class for tree data structures. [Apache-2.0]
* 97⭐ 7🍴 [svector](https://github.com/martinus/svector)) - Compact SVO optimized vector for C++17 or higher. [MIT]
* 134⭐ 31🍴 [tree.hh](https://github.com/kpeeters/tree.hh)) - An STL-like C++ header-only tree library. [GPL2+]
* 956⭐ 75🍴 [unordered_dense](https://github.com/martinus/unordered_dense)) - A fast & densely stored hashmap and hashset based on robin-hood backward shift deletion. [MIT]
## Cryptography
*Cryptography and Encryption Libraries*
* [Bcrypt](http://bcrypt.sourceforge.net/) - A cross platform file encryption utility. Encrypted files are portable across all supported operating systems and processors. [BSD]
* [BeeCrypt](http://beecrypt.sourceforge.net/) - A portable and fast cryptography library. [LGPLv2.1+]
* [Botan](http://botan.randombit.net/) - A crypto library for C++. [BSD-2]
* 4921⭐ 1513🍴 [Crypto++](https://github.com/weidai11/cryptopp)) - A free C++ class library of cryptographic schemes. [Boost] [website](http://www.cryptopp.com/)
* 197⭐ 49🍴 [digestpp](https://github.com/kerukuro/digestpp)) - C++11 header-only message digest (hash) library. [PublicDomain]
* 🌎 [GnuPG](www.gnupg.org/) - A complete and free implementation of the OpenPGP standard. [GPL]
* [GnuTLS](http://www.gnutls.org/) - A secure communications library implementing the SSL, TLS and DTLS protocols. [LGPL2.1]
* [Libgcrypt](http://www.gnu.org/software/libgcrypt/) - A general purpose cryptographic library originally based on code from GnuPG. [LGPLv2.1+]
* [LibreSSL](http://www.libressl.org/) - A free version of the SSL/TLS protocol forked from OpenSSL in 2014. [?]
* 12348⭐ 1747🍴 [libsodium](https://github.com/jedisct1/libsodium)) - P(ortable|ackageable) NaCl-based crypto library, opinionated and easy to use. [ISC]
* 633⭐ 94🍴 [libhydrogen](https://github.com/jedisct1/libhydrogen)) - A lightweight, secure, easy-to-use crypto library suitable for constrained environments. [ISC]
* 1577⭐ 460🍴 [LibTomCrypt](https://github.com/libtom/libtomcrypt)) - A fairly comprehensive, modular and portable cryptographic toolkit. [WTFPL]
* 5569⭐ 2611🍴 [mbedTLS](https://github.com/ARMmbed/mbedtls)) - An open source, portable, easy to use, readable and flexible SSL library, previously known as PolarSSL. [Apache2] 🌎 [website](tls.mbed.org/)
* [Nettle](http://www.lysator.liu.se/~nisse/nettle/) - A low-level cryptographic library. [LGPL]
* 26052⭐ 10171🍴 [OpenSSL](https://github.com/openssl/openssl)) - A robust, commercial-grade, full-featured, and Open Source cryptography library. [Apache] [website](http://www.openssl.org/)
* 99⭐ 19🍴 [retter](https://github.com/MaciejCzyzewski/retter)) - A collection of hash functions, ciphers, tools, libraries, and materials related to cryptography.
* 4535⭐ 711🍴 [s2n](https://github.com/awslabs/s2n)) - An implementation of the TLS/SSL protocols. [Apache]
* 1328⭐ 189🍴 [sha1collisiondetection](https://github.com/cr-marcstevens/sha1collisiondetection)) - Library and command line tool to detect SHA-1 collision in a file. [MIT]
* 13505⭐ 1181🍴 [Tink](https://github.com/google/tink)) - A multi-language, cross-platform library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse. [Apache-2.0]
* 4306⭐ 1300🍴 [Tiny AES in C](https://github.com/kokke/tiny-AES-c)) - Small portable AES128/192/256 in C. [PublicDomain]
* 1878⭐ 144🍴 [Themis](https://github.com/cossacklabs/themis)) - crypto library for painless data security, providing symmetric and asymmetric encryption, secure sockets with forward secrecy, for mobile and server platforms. [Apache2]
* 91⭐ 21🍴 [HEhub](https://github.com/primihub/HEhub)) - A library for homomorphic encryption and its applications. [Apache2]
## CSV
*Libraries for parsing Comma Separated Value (CSV) files*
* 13⭐ 1🍴 [commata](https://github.com/furfurylic/commata)) - Just another header-only C++17 CSV parser. [Unlicense]
* 565⭐ 96🍴 [csv2](https://github.com/p-ranav/csv2)) - Fast CSV parser for modern C++. [MIT]
* 30⭐ 5🍴 [Csv::Parser](https://github.com/ashaduri/csv-parser)) - Compile-time and runtime CSV parser written in C++17. [Zlib]
* 2162⭐ 440🍴 [Fast C++ CSV Parser](https://github.com/ben-strasser/fast-cpp-csv-parser)) - Small, easy-to-use and fast header-only library for reading CSV files. [BSD-3-Clause]
* 1259⭐ 124🍴 [Glaze](https://github.com/stephenberry/glaze)) - High performance, header only, CSV library with reflection support. [MIT]
* 80⭐ 11🍴 [lazycsv](https://github.com/ashtum/lazycsv)) - A fast, lightweight and single-header csv parser for modern C++. [MIT]
* 51⭐ 5🍴 [ssp](https://github.com/red0124/ssp)) - A header only "csv" parser which is fast and versatile with modern C++ api. [MIT]
* 920⭐ 156🍴 [Vince's CSV Parser](https://github.com/vincentlaucsb/csv-parser)) - A fast, self-contained, streaming C++17 CSV parser with optional type-casting and statistics. [MIT]
## Database
*Database Libraries, SQL Servers, ODBC Drivers, and Tools*
* 306⭐ 159🍴 [ClickHouse](https://github.com/ClickHouse/clickhouse-cpp)) - C++ client for ClickHouse DBMS. [Apache2]
* 186⭐ 12🍴 [CrossDB](https://github.com/crossdb-org/crossdb)) - Ultra High-performance Lightweight Embedded and Server OLTP RDBMS. [MPL-2.0] 🌎 [website](crossdb.org/)
* 🌎 [DuckDB](duckdb.org/) - in-process SQL OLAP Database Management System. [MIT] 🌎 [website](duckdb.org/)
* 714⭐ 119🍴 [hiberlite](https://github.com/paulftw/hiberlite)) - C++ Object-relational mapping for sqlite3. [BSD]
* 6272⭐ 1818🍴 [Hiredis](https://github.com/redis/hiredis)) - A minimalistic C client library for the Redis database. [BSD]
* 2726⭐ 276🍴 [Infinity](https://github.com/infiniflow/infinity)) - The AI-native database built for LLM applications, providing incredibly fast vector and full-text search. [Apache2]
* 1428⭐ 98🍴 [Kuzu](https://github.com/kuzudb/kuzu)) - Embeddable property graph database management system built for query speed and scalability. Implements Cypher. [MIT] 🌎 [website](kuzudb.com/)
* 3601⭐ 471🍴 [Kvrocks](https://github.com/apache/incubator-kvrocks)) - A distributed key value NoSQL database that uses RocksDB as storage engine and is compatible with Redis protocol. [Apache2]
* 36693⭐ 7851🍴 [LevelDB](https://github.com/google/leveldb)) - A fast key-value storage library written at Google that provides an ordered mapping from string keys to string values. [BSD]
* 1212⭐ 183🍴 [libpg_query](https://github.com/pganalyze/libpg_query)) - C library for accessing the PostgreSQL parser outside of the server environment. [BSD-3-Clause]
* 1045⭐ 243🍴 [libpqxx](https://github.com/jtv/libpqxx)) - The official C++ client API for PostgreSQL. [BSD-3-Clause]
* 🌎 [LMDB](www.symas.com/lmdb) - Very fast embedded key/value store with full ACID semantics. [OpenLDAP]
* 273⭐ 88🍴 [LMDB++](https://github.com/bendiken/lmdbxx)) - C++11 wrapper for the LMDB embedded database library. [PublicDomain]
* 38⭐ 4🍴 [mgclient](https://github.com/memgraph/mgclient)) - C/C++ Memgraph Client. [Apache2]
* 817⭐ 454🍴 [MongoDB C Driver](https://github.com/mongodb/mongo-c-driver)) - MongoDB client library for C. [Apache2]
* 1046⭐ 544🍴 [MongoDB C++ Driver](https://github.com/mongodb/mongo-cxx-driver)) - C++ driver for MongoDB. [Apache2]
* 347⭐ 180🍴 [MongoDB Libbson](https://github.com/mongodb/libbson)) - A BSON utility library. [Apache2]
* [MySQL++](http://www.tangentsoft.net/mysql++/) - A C++ wrapper for MySQL's C API. [LGPL]
* 339⭐ 86🍴 [nanodbc](https://github.com/nanodbc/nanodbc)) - A small C++ wrapper for the native C ODBC API. [MIT]
* 🌎 [ODB](www.codesynthesis.com/products/odb/) - An open-source, cross-platform, and cross-database object-relational mapping (ORM) system for C++. [GPLv2]
* 190⭐ 78🍴 [redis3m](https://github.com/luca3m/redis3m)) - Wrapper of hiredis with clean C++ interface, supporting sentinel and ready to use patterns. [Apache2]
* 773⭐ 63🍴 [Reindexer](https://github.com/Restream/reindexer)) - Embeddable, in-memory, document-oriented database with a high-level Query builder interface. [Apache2] 🌎 [website](reindexer.io/)
* 28750⭐ 6340🍴 [RocksDB](https://github.com/facebook/rocksdb)) - Embedded key-value store for fast storage from facebook. [BSD]
* 536⭐ 82🍴 [SimDB](https://github.com/LiveAsynchronousVisualizedArchitecture/simdb)) - High performance, shared memory, lock free, cross platform, single file, minimal dependencies, C++11 key-value store. [Apache2]
* 1426⭐ 479🍴 [SOCI](https://github.com/SOCI/soci)) - A database abstraction layer for C++. [Boost]
* 921⭐ 72🍴 [Speedb](https://github.com/speedb-io/speedb)) - Community-led project: A RocksDB compliant high performance scalable embedded key-value store. [Apache2]
* [SQLite](http://www.sqlite.org/) - A completely embedded, full-featured relational database in a few 100k that you can include right into your project. [PublicDomain]
* 2260⭐ 514🍴 [SQLiteC++](https://github.com/SRombauts/SQLiteCpp)) - SQLiteC++ (SQLiteCpp) is a smart and easy to use C++ SQLite3 wrapper. [MIT]
* 903⭐ 156🍴 [sqlite_modern_cpp](https://github.com/SqliteModernCpp/sqlite_modern_cpp)) - Header only C++14 wrapper around sqlite library. [MIT]
* 2317⭐ 320🍴 [sqlite_orm](https://github.com/fnc12/sqlite_orm)) - SQLite ORM light header only library for modern C++. [AGPL + paid MIT]
* 2482⭐ 341🍴 [sqlpp11](https://github.com/rbock/sqlpp11)) - A type safe embedded domain specific language for SQL queries and results in C++. [BSD-2-Clause]
* 1871⭐ 185🍴 [TileDB](https://github.com/TileDB-Inc/TileDB)) - Fast Dense and Sparse Multidimensional Array DBMS. [MIT] 🌎 [website](tiledb.io/)
* 253⭐ 25🍴 [TinyORM](https://github.com/silverqx/TinyORM)) - Modern C++ ORM library. [MIT] 🌎 [website](www.tinyorm.org/)
* 2119⭐ 165🍴 [UnQLite](https://github.com/symisc/unqlite)) - A self-contained, serverless, zero-configuration, transactional NoSQL engine. [BSD-2-Clause] 🌎 [website](unqlite.org/)
* 🌎 [upscaledb](upscaledb.com) - An embedded "typed" key/value store with a built-in query interface. [GPLv3]
* 10⭐ 0🍴 [TigerBeetleDB C++ client (Community)](https://github.com/kassane/tigerbeetle-cpp)) - TigerBeetle is a financial accounting database designed for mission critical safety and performance to power the future of financial services. [BSL-1.0]
* 711⭐ 72🍴 [Trilogy](https://github.com/trilogy-libraries/trilogy)) - a client library for MySQL-compatible database servers, designed for performance, flexibility, and ease of embedding. [MIT]
* 554⭐ 31🍴 [UStore](https://github.com/unum-cloud/ustore)) - Multi-Modal database for BLOBs, JSON, and graphs. [Apache2]
* 3540⭐ 1168🍴 [Velox](https://github.com/facebookincubator/velox)) - A C++ vectorized database acceleration library aimed to optimizing query engines and data processing systems. [Apache-2.0] 🌎 [website](velox-lib.io/)
## Data visualization
*Data visualization Libraries*
* 4343⭐ 334🍴 [matplotplusplus](https://github.com/alandefreitas/matplotplusplus)) - C++ Graphics Library for Data Visualization. [MIT] 🌎 [website](alandefreitas.github.io/matplotplusplus/)
## Debug
*Debugging Libraries, Memory Leak and Resource Leak Detection, Unit Testing*
* 3822⭐ 481🍴 [backward-cpp](https://github.com/bombela/backward-cpp)) - A beautiful stack trace pretty printer for C++. [MIT]
* 🌎 [Bencher](bencher.dev/) - A suite of continuous benchmarking tools designed to catch performance regressions in CI. [MIT]/[Apache2]
* 9067⭐ 1634🍴 [benchmark](https://github.com/google/benchmark)) - Google provided small microbenchmark support library. [Apache2]
* 183⭐ 140🍴 [Boost.Test](https://github.com/boostorg/test)) - Boost Test Library. [Boost] 🌎 [website](boost.org/libs/test)
* 1080⭐ 209🍴 [check](https://github.com/libcheck/check)) - Check is a unit testing framework for C. [LGPL-2.1] 🌎 [website](libcheck.github.io/check/)
* 5975⭐ 644🍴 [doctest](https://github.com/onqtam/doctest)) - The lightest feature rich C++ single header testing framework. [MIT]
* 18785⭐ 3056🍴 [Catch2](https://github.com/catchorg/Catch2)) - A modern, C++-native, test framework for unit-tests, TDD and BDD. [Boost]
* 828⭐ 96🍴 [Celero](https://github.com/DigitalInBlue/Celero)) - C++ Benchmarking Framework. [Apache2]
* 303⭐ 7🍴 [cpp-dump](https://github.com/philip82148/cpp-dump)) - A C++ library for debugging purposes that can print any variable, even user-defined types. [MIT]
* 1378⭐ 516🍴 [CppUTest](https://github.com/cpputest/cpputest)) - Unit testing and mocking framework for C/C++. [BSD-3-clause]
* [CUTE](http://cute-test.com) - C++ Unit Testing Easier. [LGPL3]
* 🌎 [CMocka](cmocka.org/) - unit testing framework for C with support for mock objects. [Apache2]
* 284⭐ 45🍴 [CppBenchmark](https://github.com/chronoxor/CppBenchmark)) - Performance benchmark framework for C++ with nanoseconds measure precision. [MIT]
* 745⭐ 78🍴 [Cpptrace](https://github.com/jeremy-rifkin/cpptrace)) - A simple, portable, and self-contained C++ stacktrace library supporting C++11 and greater. [MIT]
* [CppUnit](http://www.freedesktop.org/wiki/Software/cppunit/) - C++ port of JUnit. [LGPL2]
* 🌎 [CTest](cmake.org/cmake/help/v2.8.8/ctest.html) - The CMake test driver program. [BSD]
* 3009⭐ 258🍴 [dbg-macro](https://github.com/sharkdp/dbg-macro)) - A dbg(…) macro for C++. [MIT]
* 1035⭐ 151🍴 [DebugViewPP](https://github.com/CobaltFusion/DebugViewPP)) - Debug logging viewer. [Boost]
* [Deleaker](http://www.deleaker.com) - A tool for resource leak detection, including memory, GDI and handle leaks.
* 1263⭐ 175🍴 [FakeIt](https://github.com/eranpeer/FakeIt)) - Simple mocking framework for C++. [MIT]
* 789⭐ 169🍴 [fff](https://github.com/meekrosoft/fff)) - A micro-framework for creating fake C functions. [MIT]
* 34962⭐ 10173🍴 [Google Mock](https://github.com/google/googletest/blob/master/googlemock/README.md)) - A library for writing and using C++ mock classes. [BSD]
* 34962⭐ 10173🍴 [Google Test](https://github.com/google/googletest)) - Google C++ Testing Framework. [BSD]
* 181⭐ 23🍴 [ig-debugheap](https://github.com/deplinenoise/ig-debugheap)) - Multiplatform debug heap useful for tracking down memory errors. [BSD]
* 553⭐ 37🍴 [libassert](https://github.com/jeremy-rifkin/libassert)) - The most over-engineered C++ assertion library. [MIT]
* 252⭐ 62🍴 [libtap](https://github.com/zorgnax/libtap)) - Write tests in C. [GPL2]
* 1469⭐ 116🍴 [microprofile](https://github.com/jonasmr/microprofile)) - Profiler with web-view for multiple platforms. [Unlicense]
* 576⭐ 94🍴 [MinUnit](https://github.com/siu/minunit)) - A minimal unit testing framework for C self-contained in a single header file. [MIT]
* [Mockator](http://www.mockator.com) - Eclipse CDT plug-in for C++ Seams and Mock Objects.
* 1449⭐ 83🍴 [nanobench](https://github.com/martinus/nanobench)) - Simple, fast, accurate single-header microbenchmarking functionality for C++11/14/17/20. [MIT] 🌎 [website](nanobench.ankerl.com)
* 132⭐ 13🍴 [Nanotimer](https://github.com/mattreecebentley/plf_nanotimer)) - A simple low-overhead cross-platform timer class for benchmarking. [zLib] [website](http://www.plflib.org/nanotimer.htm)
* 359⭐ 47🍴 [Nonius](https://github.com/libnonius/nonius)) - A C++ micro-benchmarking framework. [CC]
* 3155⭐ 270🍴 [Remotery](https://github.com/Celtoys/Remotery)) - Single C File Profiler with Web Viewer. [Apache2]
* 268⭐ 10🍴 [snitch](https://github.com/cschreib/snitch)) - Lightweight C++20 testing framework. [Boost]
* 498⭐ 25🍴 [Touca](https://github.com/trytouca/trytouca)) - Open-source regression testing system that you can self-host. [Apache2] 🌎 [website](touca.io/)
* 557⭐ 176🍴 [UnitTest++](https://github.com/unittest-cpp/unittest-cpp)) - A lightweight unit testing framework for C++. [MIT/X Consortium license]
* 4133⭐ 984🍴 [Unity](https://github.com/ThrowTheSwitch/Unity)) - Simple Unit Testing for C. [MIT]
* 850⭐ 59🍴 [utest.h](https://github.com/sheredom/utest.h)) - Single header unit testing framework for C and C++. [Unlicense]
* 1270⭐ 120🍴 [μt](https://github.com/boost-experimental/ut)) - C++20 single header/single module, macro-free μ(micro)/Unit Testing Framework. [Boost]
* 🌎 [VLD](kinddragon.github.io/vld//) - Visual Leak Detector. A free, robust, open-source memory leak detection system for Visual C++.
## Documentation
* 64⭐ 6🍴 [Doxide](https://github.com/lawmurray/doxide)) - Modern documentation for modern C++, configure with YAML, output Markdown. [Apache 2.0] 🌎 [website](doxide.org)
* 5721⭐ 1273🍴 [doxygen](https://github.com/doxygen/doxygen)) :zap: - The de facto standard tool for generating documentation from annotated C++ sources. [GPL2] 🌎 [website](www.doxygen.org)
* 306⭐ 23🍴 [doxyrest](https://github.com/vovkos/doxyrest)) - A compiler from Doxygen XML to reStructuredText for Sphinx. [MIT]
* 311⭐ 22🍴 [hdoc](https://github.com/hdoc/hdoc)) - The modern documentation tool for C++. [AGPL/Proprietary] 🌎 [website](hdoc.io)
* 201⭐ 33🍴 [Natural Docs](https://github.com/NaturalDocs/NaturalDocs)) - Natural Docs is an open source documentation generator for multiple programming languages. [AGPL/Proprietary] 🌎 [website](www.naturaldocs.org)
* 6640⭐ 2132🍴 [Sphinx](https://github.com/sphinx-doc/sphinx)) - Sphinx makes it easy to create intelligent and beautiful documentation. [BSD-2-Clause] 🌎 [website](www.sphinx-doc.org)
## DSP
*Digital signal processing.*
* 1867⭐ 380🍴 [DSPFilters](https://github.com/vinniefalco/DSPFilters)) - A collection of useful C++ classes for digital signal processing. [MIT]
* [FFTW](http://www.fftw.org/) - A C library for computing the DFT in one or more dimensions. [GPL]
* 650⭐ 142🍴 [iir1](https://github.com/berndporr/iir1)) - IIR Realtime C++ filter library. [MIT]
* 1501⭐ 288🍴 [kissfft](https://github.com/mborgerding/kissfft)) - A Fast Fourier Transform (FFT) library that tries to Keep it Simple, Stupid. [BSD-3-Clause]
* 78⭐ 34🍴 [pocketfft](https://github.com/mreineck/pocketfft)) - FFT implementation based on FFTPack, but with several improvements. [BSD-3-Clause]
* 383⭐ 122🍴 [wavelib](https://github.com/rafat/wavelib)) - C implementation of 1D and 2D wavelet transforms. [BSD-3-Clause]
## Font
*Libraries for parsing and manipulating font files.*
* 🌎 [Fontconfig](gitlab.freedesktop.org/fontconfig/fontconfig) - Font configuration and customization library. [MIT] 🌎 [website](www.freedesktop.org/wiki/Software/fontconfig/)
* 🌎 [FreeType](www.freetype.org/) - FreeType is a freely available software library to render fonts. [FTL & GPLv2]
* 427⭐ 64🍴 [otfcc](https://github.com/caryll/otfcc)) - A C library and utility used for parsing and writing OpenType font files. [Apache-2.0]
* 4171⭐ 634🍴 [harfbuzz](https://github.com/harfbuzz/harfbuzz)) - A text shaping engine. [Old MIT]
* 475⭐ 33🍴 [libschrift](https://github.com/tomolt/libschrift)) - A lightweight TrueType font rendering library. [ISC]
## Game Engine
* 1768⭐ 153🍴 [Acid](https://github.com/Equilibrium-Games/Acid)) - A high speed C++17 Vulkan game engine. [MIT]
* [Allegro](http://liballeg.org/) - A cross-platform library mainly aimed for video games and multimedia programming. [zlib]
* 932⭐ 205🍴 [Axmol Engine](https://github.com/axmolengine/axmol)) - A cross-platform game engine for desktop, mobile, and XBOX (UWP), derived from Cocos2d-x-4.0. [MIT] 🌎 [website](axmol.dev/)
* [Cocos2d-x](http://www.cocos2d-x.org/) - A multi-platform framework for building 2d games, interactive books, demos and other graphical applications. [MIT]
* 1836⭐ 200🍴 [Corange](https://github.com/orangeduck/Corange)) - A game engine written in pure C, SDL and OpenGL. [BSD]
* 2156⭐ 154🍴 [crown](https://github.com/dbartolini/crown)) - Crown is a general purpose data-driven game engine, written from scratch in orthodox C++ with a minimalistic and data-oriented design philosophy in mind. [MIT]
* [delta3d](http://sourceforge.net/projects/delta3d/) - A robust simulation platform. [LGPL2]
* 10320⭐ 894🍴 [EnTT](https://github.com/skypjack/entt)) - Gaming meets modern C++. [MIT]
* 4515⭐ 1305🍴 [GamePlay](https://github.com/gameplay3d/GamePlay)) - A cross-platform native C++ game framework for creating 2D/3D mobile and desktop games. [Apache2]
* 91573⭐ 21274🍴 [Godot](https://github.com/godotengine/godot)) - A fully featured, open source, MIT licensed, game engine. [MIT]
* 113⭐ 22🍴 [Grit](https://github.com/grit-engine/grit-engine)) - Community project to build a free game engine for implementing open world 3D games. [MIT]
* 3626⭐ 162🍴 [Halley](https://github.com/amzeratul/halley)) - A lightweight game engine written in C++14 with a "true" entity-component system. [Apache 2.0]
* ?⭐ ?🍴 [JNGL](https://github.com/jhasse/jngl/)) - 2D library for Linux, Windows, macOS, Android, iOS, Xbox, the Nintendo Switch and the Web. [zlib] 🌎 [website](bixense.com/jngl/)
* 2102⭐ 349🍴 [KlayGE](https://github.com/gongminmin/KlayGE)) - a cross-platform open source game engine with plugin-based architecture. [GPLv2] [website](http://www.klayge.org/)
* 1088⭐ 62🍴 [nCine](https://github.com/nCine/nCine)) - A cross-platform 2D game engine with an emphasis on performance, written in C++11 and optionally scriptable in Lua. [MIT] 🌎 [website](ncine.github.io/)
* 7885⭐ 2220🍴 [o3de](https://github.com/o3de/o3de)) - An open-source, real-time, multi-platform 3D engine based on Amazon Lumberyard. [Apache2] 🌎 [website](o3de.org/)
* 3061⭐ 457🍴 [OpenXRay](https://github.com/OpenXRay/xray-16)) - a community-modified X-Ray engine used in S.T.A.L.K.E.R. game series. [Modified BSD/non-commercial only]
* [Oxygine](http://oxygine.org/) - A cross-platform 2D C++ game engine. [MIT]
* 4553⭐ 788🍴 [Panda3D](https://github.com/panda3d/panda3d)) - A game engine, a framework for 3D rendering and game development for Python and C++ programs. [Modified BSD] 🌎 [website](www.panda3d.org/)
* 3862⭐ 915🍴 [PixelGameEngine](https://github.com/OneLoneCoder/olcPixelGameEngine)) - The official distribution of olcPixelGameEngine, a tool used in javidx9's YouTube videos and projects. [OLC3]
* 2381⭐ 348🍴 [Polycode](https://github.com/ivansafrin/Polycode)) - A cross-platform framework for creative code in C++ (with Lua bindings). [MIT] [website](http://polycode.org/)
* 44⭐ 7🍴 [quakeforge](https://github.com/quakeforge/quakeforge)) - Actively maintained branch of the original Quake engine code with 20+ years of development. [GPL-2.0]
* 23081⭐ 2302🍴 [raylib](https://github.com/raysan5/raylib)) - A simple and easy-to-use library to enjoy videogames programming. [zlib/libpng] [website](http://www.raylib.com/)
* 3595⭐ 847🍴 [Spring](https://github.com/spring/spring)) - A powerful free cross-platform RTS game engine. [GPLv2/GPLv3] 🌎 [website](springrts.com/)
* 1246⭐ 110🍴 [Torque2D](https://github.com/TorqueGameEngines/Torque2D)) - An open-source and cross-platform C++ engine built for 2D game development. [MIT] 🌎 [website](torque3d.org/torque2d)
* 1537⭐ 163🍴 [Torque3D](https://github.com/TorqueGameEngines/Torque3D)) - An open-source C++ engine built for 3D game development. [MIT] 🌎 [website](torque3d.org/torque3d)
* 1565⭐ 101🍴 [toy engine](https://github.com/hugoam/toy)) - toy is a thin and modular c++ game engine and offers simple expressive c++ idioms to design full featured 2D or 3D games in fast iterations.
* 🌎 [Urho3D](urho3d.github.io/) - A free lightweight, cross-platform 2D and 3D game engine implemented in C++. Greatly inspired by OGRE and Horde3D. [MIT]
* 1427⭐ 180🍴 [ezEngine](https://github.com/ezEngine/ezEngine)) - Is a free, open-source game engine written in C++. Its philosophy is to be modular and flexible, such that it can be adapted to many different use cases. [MIT] 🌎 [website](ezengine.net/)
## Graph
* 480⭐ 116🍴 [CXXGraph](https://github.com/ZigRazor/CXXGraph)) - free C++(17) graph header-only library for representation and algorithms execution. [AGPL-3.0]
* 177⭐ 41🍴 [Graaf](https://github.com/bobluppes/graaf)) - A general-purpose lightweight C++20 graph library. [MIT] 🌎 [website](bobluppes.github.io/graaf/)
## GUI
*Graphic User Interface*
* 1685⭐ 95🍴 [Boden](https://github.com/AshampooSystems/boden)) - Native, mobile, cross-platform GUI Framework. [GPL/LGPL/Proprietary] 🌎 [website](www.boden.io)
* [CEGUI](http://cegui.org.uk/) - Flexible, cross-platform GUI library.
* 3146⭐ 235🍴 [Elements](https://github.com/cycfi/elements)) - Lightweight, fine-grained, resolution independent, modular GUI library. [MIT]
* [FLTK](http://www.fltk.org/index.php) - Fast, light, cross-platform C++ GUI toolkit. [LGPL2]
* [FOX Toolkit](http://fox-toolkit.org) - an open-source, cross-platform widget toolkit. [LGPL]
* 2351⭐ 297🍴 [GacUI](https://github.com/vczh-libraries/GacUI)) - GPU Accelerated C++ User Interface, with WYSIWYG developing tools, XML supports, built-in data binding and MVVM features. [Ms-PL]
* [GTK+](http://www.gtk.org/) - A multi-platform toolkit for creating graphical user interfaces. [LGPL]
* [gtkmm](http://www.gtkmm.org/en/) - The official C++ interface for the popular GUI library GTK+. [LGPL]
* 61532⭐ 10355🍴 [imgui](https://github.com/ocornut/imgui)) - Immediate Mode Graphical User Interface with minimal dependencies. [MIT]
* 4850⭐ 530🍴 [implot](https://github.com/epezent/implot)) - Immediate Mode Plotting widgets for imgui. [MIT]
* 🌎 [iup](www.tecgraf.puc-rio.br/iup) - Multi-platform toolkit for building graphical user interfaces. [MIT]
* 10743⭐ 616🍴 [libui](https://github.com/andlabs/libui)) - Simple and portable (but not inflexible) GUI library in C that uses the native GUI technologies of each platform it supports. [MIT]
* 731⭐ 207🍴 [MyGUI](https://github.com/MyGUI/mygui)) - Fast, flexible and simple GUI. [MIT]
* [nana](http://nanapro.org/en-us/) - Nana is a cross-platform library for GUI programming in modern C++ style. [Boost]
* 1588⭐ 200🍴 [NanoGui](https://github.com/mitsuba-renderer/nanogui)) - A minimalistic cross-platform widget library for OpenGL 3.x or higher. [BSD]
* 9368⭐ 572🍴 [nuklear](https://github.com/Immediate-Mode-UI/Nuklear)) - A single-header ANSI C gui library. [PublicDomain]
* [QCustomPlot](http://qcustomplot.com/) - Qt plotting widget without further dependencies. [GPLv3]
* [Qwt](http://qwt.sourceforge.net/) - Qt Widgets for Technical Applications. [Own based on LGPL]
* [QwtPlot3D](http://qwtplot3d.sourceforge.net/) - A feature-rich Qt/OpenGL-based C++ programming library, providing essentially a bunch of 3D-widgets. [zlib]
* 2903⭐ 318🍴 [RmlUi](https://github.com/mikke89/RmlUi)) - The HTML/CSS User Interface library evolved. Fork of libRocket. [MIT]
* 299⭐ 18🍴 [Saucer](https://github.com/saucer/saucer)) - A modern, cross-platform C++ webview library. [MIT]
* [Sciter](http://sciter.com/) - Sciter is an embeddable HTML/CSS/scripting engine aimed to be used as an UI layer of modern desktop applications. [Free/Commercial]
* 17735⭐ 615🍴 [Slint](https://github.com/slint-ui/slint)) - Lightweight GUI toolkit for desktop and embedded. [GPL/Free/Proprietary] 🌎 [website](slint.dev/)
* 834⭐ 95🍴 [TGUI](https://github.com/texus/TGUI)) - Cross-platform modern c++ GUI. [Zlib] 🌎 [website](tgui.eu/)
* 3103⭐ 188🍴 [WebUI](https://github.com/webui-dev/webui)) - Use any web browser as GUI, with your preferred language in the backend and HTML5 in the frontend. [MIT] 🌎 [website](webui.me/)
* 131⭐ 51🍴 [wxCharts](https://github.com/wxIshiko/wxCharts)) - A library to create charts in wxWidgets applications. [MIT] 🌎 [website](www.wxishiko.com/wxCharts/)
* [wxWidgets](http://wxwidgets.org/) - A C++ library that lets developers create applications for Windows, Mac OS X, Linux and other platforms with a single code base. [Own LGPL]
* 811⭐ 61🍴 [xtd](https://github.com/gammasoft71/xtd)) - Modern C++17/20 framework to create console (CLI), forms (GUI like WinForms) and tunit (unit tests like Microsoft Unit Testing Framework) applications on Windows, macOS, Linux, iOS and android. [MIT]
* 3452⭐ 150🍴 [Yue](https://github.com/yue/yue)) - A library for creating native cross-platform GUI apps. [LGPLv2]
## Graphics
* 11033⭐ 2925🍴 [assimp](https://github.com/assimp/assimp)) - Open Asset Import Library (assimp) is a cross-platform 3D model import library which aims to provide a common API for different 3D asset file formats. [BSD-3-Clause] [website](http://www.assimp.org)
* 15150⭐ 1951🍴 [bgfx](https://github.com/bkaradzic/bgfx)) - A cross-platform rendering library. [BSD]
* 1644⭐ 118🍴 [Blend2D](https://github.com/blend2d/blend2d)) - 2D vector graphics engine powered by a JIT compiler. [Zlib] 🌎 [website](blend2d.com/)
* [Cairo](http://www.cairographics.org/) - A 2D graphics library with support for multiple output devices. [LGPL2 or Mozilla MPL]
* 62⭐ 19🍴 [C-Turtle](https://github.com/walkerje/C-Turtle)) - A C++11 header-only turtle graphics library acting as a CImg wrapper. [MIT]
* 3639⭐ 332🍴 [Diligent Engine](https://github.com/DiligentGraphics/DiligentEngine)) - A modern cross-platform low-level 3D graphics library. [Apache2]
* 2586⭐ 511🍴 [DirectXTK](https://github.com/Microsoft/DirectXTK)) - A collection of helper classes for writing DirectX 11.x code in C++. [MIT]
* 13163⭐ 5284🍴 [GLFW](https://github.com/glfw/glfw)) - A simple, cross-platform OpenGL wrangling library. [zlib/libpng]
* 99⭐ 18🍴 [GLFWPP](https://github.com/janekb04/glfwpp)) - A thin modern C++17 header-only wrapper for GLFW. [MIT]
* 585⭐ 60🍴 [Harfang 3D](https://github.com/harfang3d/harfang3d)) 3D visualization library usable in C++, Python, Lua and Go. Based on BGFX. [GPLv3/LGPLv3/Proprietary] 🌎 [website](www.harfang3d.com)
* 1732⭐ 79🍴 [herebedragons](https://github.com/kosua20/herebedragons)) - A basic 3D scene implemented with various engines, frameworks or APIs. [MIT] [website](http://simonrodriguez.fr/dragon/)
* 1549⭐ 308🍴 [Horde3D](https://github.com/horde3d/Horde3D)) - A small 3D rendering and animation engine. [EPL]
* 1428⭐ 92🍴 [Ion](https://github.com/google/ion)) - A small and efficient set of libraries for building cross-platform client or server applications that use 3D graphics. [Apache2] 🌎 [website](google.github.io/ion/)
* [Irrlicht](http://irrlicht.sourceforge.net/) - A high performance realtime 3D engine written in C++. [zlib]
* 4612⭐ 1138🍴 [libigl](https://github.com/libigl/libigl)) - Simple C++ geometry processing library. [MPL2]
* 2101⭐ 139🍴 [LLGL](https://github.com/LukasBanana/LLGL)) - Low Level Graphics Library (LLGL) is a thin abstraction layer for the modern graphics APIs. [BSD-3-Clause]
* 912⭐ 128🍴 [LunaSVG](https://github.com/sammycage/lunasvg)) - a standalone SVG rendering library in C++. [MIT]
* 4823⭐ 438🍴 [magnum](https://github.com/mosra/magnum)) - Lightweight and modular C++11/C++14 graphics middleware for games and data visualization. [MIT] [website](http://magnum.graphics)
* 278⭐ 22🍴 [micro-gl](https://github.com/micro-gl/micro-gl)) - Realtime, Embeddable, Headers Only C++11 CPU vector graphics. no STD lib, no FPU and no GPU required. [CUSTOM] 🌎 [website](micro-gl.github.io/docs/microgl)
* 5205⭐ 779🍴 [NanoVG](https://github.com/memononen/nanovg)) - Antialiased 2D vector drawing library on top of OpenGL for UI and visualizations. [Zlib]
* [Ogre 3D](https://github.com/OGRECave) :zap: - A scene-oriented, real-time, flexible 3D rendering engine (as opposed to a game engine) written in C++. [MIT] 🌎 [website](www.ogre3d.org)
* [OpenSceneGraph](http://www.openscenegraph.org/) - An open source high performance 3D graphics toolkit. [OSGPL]
* 2901⭐ 565🍴 [OpenSubdiv](https://github.com/PixarAnimationStudios/OpenSubdiv)) - Pixar's library for evaluating and rendering subdivision surfaces on CPU and GPU. [Modified Apache2]
* [OpenVDB](http://www.openvdb.org/) - Library and tools for storing, editing, and rendering volumetric datasets. [MPL2]
* [Panda3D](http://www.panda3d.org/) - A framework for 3D rendering and game development for Python and C++. [BSD]
* 462⭐ 133🍴 [Partio](https://github.com/wdas/partio)) - Library for wrangling particle data, with support for most common file formats. [Modified BSD]
* 9313⭐ 1506🍴 [Skia](https://github.com/google/skia)) - A complete 2D graphic library for drawing Text, Geometries, and Images. [BSD] 🌎 [website](skia.org/)
* 781⭐ 111🍴 [ThorVG](https://github.com/thorvg/thorvg)) - a platform-independent portable library that allows for drawing vector-based scenes and animations, including SVG and Lottie. [MIT] 🌎 [website](www.thorvg.org/)
* 1214⭐ 209🍴 [TinySpline](https://github.com/msteinbeck/tinyspline)) - A small, yet powerful ANSI C library for interpolating, transforming, and querying arbitrary NURBS, B-Splines, and Bézier curves. [MIT]
* 4564⭐ 994🍴 [urho3d](https://github.com/urho3d/Urho3D)) - Cross-platform rendering and game engine. [Many different, mostly MIT]
* 2829⭐ 207🍴 [Yocto/GL](https://github.com/xelatihy/yocto-gl)) - Tiny C++ Libraries for Data-Driven Physically-based Graphics. [MIT]
## Image Processing
* 178⭐ 164🍴 [Boost.GIL](https://github.com/boostorg/gil)) - Generic Image Library. [Boost] 🌎 [website](boost.org/libs/gil)
* 35⭐ 5🍴 [BitmapPlusPLus](https://github.com/baderouaich/BitmapPlusPlus)) - Simple and Fast header only Bitmap C++ library. [MIT]
* [CImg](http://cimg.eu/) - A small, open source, C++ toolkit for image processing. [Own LGPL or GPL]
* 🌎 [CxImage](www.codeproject.com/Articles/1300/CxImage) - An image processing and conversion library to load, save, display, transform BMP, JPEG, GIF, PNG, TIFF, MNG, ICO, PCX, TGA, WMF, WBMP, JBG, J2K images. [zlib]
* 13593⭐ 3382🍴 [Dlib](https://github.com/davisking/dlib)) :zap: - A modern C++11 machine learning, computer vision, numerical optimization, and deep learning toolkit. [Boost] [website](http://dlib.net/)
* 884⭐ 51🍴 [fpng](https://github.com/richgel999/fpng)) - Super fast C++ .PNG writer/reader. [Unlicense]
* [FreeImage](http://freeimage.sourceforge.net/) - An open source library that supports popular graphics image formats and others as needed by today's multimedia applications. [GPL2 or GPL3]
* 905⭐ 272🍴 [GD](https://github.com/libgd/libgd)) - GD Graphics Library, famously used in PHP for image loading/manipulation & thumbnail generation. [custom permissive license, requires mention in user docs] [website](http://libgd.github.io/)
* [DCMTK](http://dicom.offis.de/dcmtk.php.en) - DICOM Toolkit.
* [GDCM](http://gdcm.sourceforge.net/wiki/index.php/Main_Page) - Grassroots DICOM library.
* [ITK](http://www.itk.org/) - An open-source, cross-platform system for image analysis. [Apache2 from ITK 4.0]
* [Jpegli][https://github.com/google/jpegli] - an improved JPEG encoder and decoder implementation. [BSD-3-Clause]
* 1817⭐ 394🍴 [Leptonica](https://github.com/DanBloomberg/leptonica)) - Leptonica is an open source library containing software that is broadly useful for image processing and image analysis applications. [BSD-2-Clause] [website](http://leptonica.org/index.html)
* 1584⭐ 208🍴 [libavif](https://github.com/AOMediaCodec/libavif)) - Library for encoding and decoding .avif files. [BSD-2-Clause]
* 12336⭐ 3050🍴 [libfacedetection](https://github.com/ShiqiYu/libfacedetection)) - Open source library for face detection in images. The face detection speed can reach 1500FPS. [BSD]
* 3801⭐ 1027🍴 [libjpeg-turbo](https://github.com/libjpeg-turbo/libjpeg-turbo)) - A JPEG image codec that uses SIMD instructions to accelerate baseline JPEG encoding and decoding. [IJG & BSD-3-Clause & zlib] 🌎 [website](libjpeg-turbo.org/)
* 2733⭐ 265🍴 [libjxl](https://github.com/libjxl/libjxl)) - JPEG XL image format reference implementation. [BSD-3-Clause]
* 1306⭐ 628🍴 [libpng](https://github.com/pnggroup/libpng)) - the reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. [libpng-2.0] 🌎 [website](libpng.sourceforge.io/)
* 743⭐ 75🍴 [libspng](https://github.com/randy408/libspng)) - Simple, modern libpng alternative. [BSD-2] 🌎 [website](libspng.org/)
* 51⭐ 5🍴 [libvips](https://github.com/jcupitt/libvips)) - A fast image processing library with low memory needs. [LGPL] [website](http://www.vips.ecs.soton.ac.uk/)
* 2114⭐ 426🍴 [LodePNG](https://github.com/lvandeve/lodepng)) - PNG encoder and decoder in C and C++. [Zlib]
* 🌎 [Magick++](imagemagick.org/script/magick++.php) - ImageMagick program interfaces for C++. [Apache2]
* 🌎 [MagickWnd](imagemagick.org/script/magick-wand.php) - ImageMagick program interfaces for C. [Apache2]
* 5481⭐ 416🍴 [MozJPEG](https://github.com/mozilla/mozjpeg)) - Improved JPEG encoder. [BSD/BSD-3-Clause/ZLIB]
* [OpenCV](https://github.com/opencv) :zap: - Open source computer vision. [Apache2] 🌎 [website](opencv.org)
* [OpenEXR](http://www.openexr.com/) - Cross-platform library for high dynamic range imaging. [Modified BSDF]
* 1988⭐ 602🍴 [OpenImageIO](https://github.com/OpenImageIO/oiio)) - Powerful image and texture wrangling library with support for a wide number of common lossy and RAW formats. [Modified BSD]
* 984⭐ 456🍴 [OpenJPEG](https://github.com/uclouvain/openjpeg)) - an open-source JPEG 2000 codec written in C language. [BSD-2-Clause]
* 6984⭐ 329🍴 [QOI](https://github.com/phoboslab/qoi)) - The “Quite OK Image Format” for fast, lossless image compression. [MIT]
* 311⭐ 25🍴 [SAIL](https://github.com/happy-sea-fox/sail)) - Easy-to-use cross-platform image decoding library with pluggable image codecs. [MIT]
* 2072⭐ 416🍴 [Simd](https://github.com/ermig1979/Simd)) - C++ image processing library with using of SIMD: SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, VMX(Altivec) and VSX(Power7), NEON for ARM. [MIT]
* 27126⭐ 7720🍴 [stb-image](https://github.com/nothings/stb/blob/master/stb_image.h)) - STB single-header image loading library. [Public Domain]
* [tesseract-ocr](https://github.com/tesseract-ocr) - An OCR engine. [Apache2]
* 156⭐ 30🍴 [TinyDNG](https://github.com/syoyo/tinydng)) - Header-only Tiny DNG/TIFF loader and writer in C++. [MIT]
* 113⭐ 43🍴 [TinyEXIF](https://github.com/cdcseacave/TinyEXIF)) - Tiny ISO-compliant C++ EXIF and XMP parsing library for JPEG. [MIT]
* 143⭐ 41🍴 [TinyTIFF](https://github.com/jkriege2/TinyTIFF)) - lightweight TIFF reader/writer library. [GPL-3.0]
* 721⭐ 108🍴 [Video++](https://github.com/matt-42/vpp)) - A C++14 high performance video and image processing library. [MIT]
* 412⭐ 191🍴 [VIGRA](https://github.com/ukoethe/vigra)) - A generic C++ computer vision library for image analysis. [MIT X11]
* [VTK](http://www.vtk.org/) - Open-source, freely available software system for 3D computer graphics, image processing and visualization. [BSD]
## Internationalization
* [gettext](http://www.gnu.org/software/gettext/) - GNU 'gettext'. [GPL2]
* [IBM ICU](http://site.icu-project.org/) - A set of C/C++ and Java libraries providing Unicode and Globalization support. [ICU]
* [libiconv](http://www.gnu.org/software/libiconv/) - An encoding conversion library between different character encodings. [GPL]
* 1187⭐ 78🍴 [simdutf](https://github.com/simdutf/simdutf)) - Unicode routines (UTF8, UTF16, UTF32): billions of characters per second using SSE2, AVX2, NEON, AVX-512. [Apache-2/MIT]
* 282⭐ 24🍴 [uni-algo](https://github.com/uni-algo/uni-algo)) - Unicode Algorithms Implementation for C/C++. [Unlicense or MIT]
* 1750⭐ 128🍴 [utf8.h](https://github.com/sheredom/utf8.h)) - Single header utf8 string functions for C and C++. [Unlicense]
* 1064⭐ 141🍴 [utf8proc](https://github.com/JuliaStrings/utf8proc)) - A clean C library for processing UTF-8 Unicode data. [MIT]
## Inter-process communication
* 🌎 [Apache Thrift](thrift.apache.org/) - Efficient cross-language IPC/RPC, works between C++, Java, Python, PHP, C#, and many more other languages. Originally developed by Facebook. [Apache2]
* 139⭐ 117🍴 [Boost.Interprocess](https://github.com/boostorg/interprocess)) - Header-only Boost library that supports kernel-level shared memory and memory-mapped files, with in-built synchronization mechanisms (semaphores, mutexes, and more). [Boost] 🌎 [website](boost.org/libs/interprocess)
* 16573⭐ 3980🍴 [bRPC](https://github.com/apache/brpc)) - bRPC is an Industrial-grade RPC framework using C++ Language, which is often used in high performance system such as Search, Storage, Machine learning, Advertisement, Recommendation etc. [Apache2] 🌎 [website](brpc.apache.org/)
* 11763⭐ 928🍴 [Cap'n Proto](https://github.com/capnproto/capnproto)) - Fast data interchange format and capability-based RPC system. [MIT] 🌎 [website](capnproto.org/)
* 11⭐ 3🍴 [eCAL](https://github.com/continental/ecal)) - Pub/sub, client/server, C++/Python/C#, various message protocols (protobuf, capnproto ..). [Apache2] [website](http://www.ecal.io/)
* 42070⭐ 10584🍴 [gRPC](https://github.com/grpc/grpc)) - A high performance, open source, general-purpose RPC framework. [BSD] [website](http://www.grpc.io/)
* 2055⭐ 592🍴 [Ice](https://github.com/zeroc-ice/ice)) - Comprehensive RPC framework with support for C++, C#, Java, JavaScript, Python and more. [GPLv2]
* 1701⭐ 396🍴 [iceoryx](https://github.com/eclipse-iceoryx/iceoryx)) - True zero-copy inter-process communication framework for safety critical systems with bindings for C, Rust. Runs on Linux, QNX, Windows, Mac OS, FreeBSD. [Apache2] 🌎 [website](iceoryx.io/)
* 957⭐ 322🍴 [libjson-rpc-cpp](https://github.com/cinemast/libjson-rpc-cpp)) - JSON-RPC framework for C++ servers and clients. [MIT]
* 6008⭐ 1007🍴 [nanomsg](https://github.com/nanomsg/nanomsg)) - A simple high-performance implementation of several "scalability protocols". [MIT] [website](http://nanomsg.org/)
* 3870⭐ 495🍴 [nng](https://github.com/nanomsg/nng)) - nanomsg-next-generation, a light-weight brokerless messaging library. [MIT] 🌎 [website](nanomsg.github.io/nng/)
* 1724⭐ 380🍴 [rpclib](https://github.com/rpclib/rpclib)) - A modern C++ msgpack-RPC server and client library. [MIT]
* 37⭐ 8🍴 [simple-rpc-cpp](https://github.com/pearu/simple-rpc-cpp)) - A simple RPC wrapper generator to C/C++ functions. [BSD]
* 1961⭐ 388🍴 [SRPC](https://github.com/sogou/srpc)) - A lightweight RPC system that supports multiple protocols and OpenTelemetry. [Apache2]
* [WAMP](http://wamp.ws/) - Provides RPC and pub/sub messaging patterns. (various implementations, various languages)
* [xmlrpc-c](http://xmlrpc-c.sourceforge.net/) - A lightweight RPC library based on XML and HTTP. [BSD]
## JSON
* 55⭐ 93🍴 [Boost.PropertyTree](https://github.com/boostorg/property_tree)) - A property tree parser/generator that can be used to parse XML/JSON/INI/Info files. [Boost] 🌎 [website](boost.org/libs/property_tree)
* 10877⭐ 3223🍴 [cJSON](https://github.com/DaveGamble/cJSON)) - Ultralightweight JSON parser in ANSI C. [MIT]
* 478⭐ 31🍴 [DAW JSON Link](https://github.com/beached/daw_json_link)) - Fast, convenient JSON serialization and parsing in C++. [BSL-1.0]
* 709⭐ 166🍴 [frozen](https://github.com/cesanta/frozen)) - JSON parser and generator for C/C++. [GPL & GPL2]
* 1259⭐ 124🍴 [Glaze](https://github.com/stephenberry/glaze)) - Extremely fast, in memory, JSON and interface library for modern C++. [MIT]
* 3096⭐ 816🍴 [Jansson](https://github.com/akheron/jansson)) - C library for encoding, decoding and manipulating JSON data. [MIT]
* 38⭐ 5🍴 [jbson](https://github.com/chrismanning/jbson)) - jbson is a library for building & iterating BSON data, and JSON documents in C++14. [Boost]
* 132⭐ 23🍴 [JeayeSON](https://github.com/jeaye/jeayeson)) - A very sane (header only) C++ JSON library. [BSD]
* 3715⭐ 783🍴 [Jsmn](https://github.com/zserge/jsmn)) - A minimalistic JSON parser in C. [MIT]
* 43463⭐ 6763🍴 [json](https://github.com/nlohmann/json)) :zap: - JSON for Modern C++. [MIT] 🌎 [website](json.nlohmann.me)
* 539⭐ 175🍴 [JSON++](https://github.com/hjiang/jsonxx)) - A JSON parser in C++. [MIT]
* 647⭐ 19🍴 [json.cpp](https://github.com/jart/json.cpp)) - a baroque JSON parsing / serialization library for C++. [Apache-2.0]
* 716⭐ 79🍴 [json.h](https://github.com/sheredom/json.h)) - A simple one header/one source solution to parsing JSON in C and C++. [Unlicense]
* 38⭐ 3🍴 [json-build](https://github.com/lcsmuller/json-build)) - C89 tiny zero-allocation JSON serializer. [MIT]
* 2990⭐ 1065🍴 [json-c](https://github.com/json-c/json-c)) - A JSON implementation in C. [MIT]
* 729⭐ 165🍴 [jsoncons](https://github.com/danielaparker/jsoncons)) - A C++ header-only library for JSON and JSON-like binary formats with JSONPointer, JSONPatch, JSONPath and JMESPath. [Boost]
* 8208⭐ 2649🍴 [JsonCpp](https://github.com/open-source-parsers/jsoncpp)) - A C++ library for interacting with JSON. [MIT]
* 59⭐ 5🍴 [Jsonifier](https://github.com/RealTimeChris/Jsonifier)) - A few classes for parsing and serializing objects from/into JSON - very rapidly. [MIT]
* 11⭐ 1🍴 [jsonParse](https://github.com/liufeigit/jsonParse)) - A simple JSON parser in ANSI C. [MIT]
* 1285⭐ 289🍴 [json-parser](https://github.com/udp/json-parser)) - Very low footprint JSON parser written in portable ANSI C. [BSD]
* 2552⭐ 616🍴 [json11](https://github.com/dropbox/json11)) - A tiny JSON library for C++11. [MIT]
* 427⭐ 57🍴 [json-struct](https://github.com/jorgen/json_struct)) - High performance, single header JSON parser parsing to and from C++ structs. [MIT]
* 129⭐ 18🍴 [json-voorhees](https://github.com/tgockel/json-voorhees)) - JSON library for C++. Support for C++11. No dependencies, fast and dev-friendly. [Apache2]
* 41⭐ 3🍴 [JSON Toolkit](https://github.com/sourcemeta/jsontoolkit)) - JSON, JSON Pointer, JSON Schema, and JSONL library for C++20. [AGPL/Commercial]
* 72⭐ 26🍴 [jute](https://github.com/amir-s/jute)) - Very simple C++ JSON Parser. [PublicDomain]
* 281⭐ 97🍴 [libjson](https://github.com/vincenthz/libjson)) - A JSON parser and printer library in C. easy to integrate with any model. [LGPL]
* [libjson](http://sourceforge.net/projects/libjson/) - Lightweight JSON library. [?]
* 1627⭐ 138🍴 [LIBUCL](https://github.com/vstakhov/libucl)) :zap: - Universal configuration library parser. [BSD-2-Clause]
* 1363⭐ 330🍴 [parson](https://github.com/kgabis/parson)) - Parson is a lighweight json library written in C. [MIT]
* 1119⭐ 221🍴 [PicoJSON](https://github.com/kazuho/picojson)) - A header-file-only, JSON parser serializer in C++. [BSD]
* 330⭐ 106🍴 [qt-json](https://github.com/gaudecker/qt-json)) - A simple class for parsing JSON data into a QVariant hierarchy and vice versa. [GPLv3]
* 288⭐ 141🍴 [QJson](https://github.com/flavio/qjson)) - A qt-based library that maps JSON data to QVariant objects. [LGPL2]
* 14296⭐ 3536🍴 [RapidJSON](https://github.com/miloyip/rapidjson)) :zap: - A fast JSON parser/generator for C++ with both SAX/DOM style API. [MIT] 🌎 [website](rapidjson.org)
* 568⭐ 43🍴 [sajson](https://github.com/chadaustin/sajson)) - Lightweight, extremely high-performance JSON parser for C++11. [MIT]
* 19403⭐ 1022🍴 [simdjson](https://github.com/lemire/simdjson)) - Extremely fast JSON library that can parse gigabytes of JSON per second. [Apache-2.0]
* 858⭐ 101🍴 [Sonic-Cpp](https://github.com/bytedance/sonic-cpp)) - A fast JSON serializing & deserializing library, accelerated by SIMD. [Apache-2.0]
* 601⭐ 88🍴 [taoJSON](https://github.com/taocpp/json)) - Zero-dependency C++ header-only JSON library. [MIT]
* 🌎 [ujson](bitbucket.org/awangk/ujson) - µjson is a a small, C++11, UTF-8, JSON library. [MIT]
* 4341⭐ 365🍴 [UltraJSON](https://github.com/ultrajson/ultrajson)) - Ultra fast JSON decoder and encoder written in C. [BSD-3-Clause]
* 2156⭐ 437🍴 [YAJL](https://github.com/lloyd/yajl)) - A fast streaming JSON parsing library in C. [ISC]
* 3137⭐ 269🍴 [yyjson](https://github.com/ibireme/yyjson)) - A high performance JSON library written in ANSI C. [MIT]
## Logging
* 201⭐ 57🍴 [Blackhole](https://github.com/3Hren/blackhole)) - Attribute-based logging framework, which is designed to be fast, modular and highly customizable. [MIT]
* 182⭐ 105🍴 [Boost.Log](https://github.com/boostorg/log)) - Designed to be very modular and extensible. [Boost] 🌎 [website](boost.org/libs/log)
* 239⭐ 21🍴 [BqLog](https://github.com/Tencent/BqLog)) - A lightweight, high-performance logging system used in projects such as "Honor of Kings". [Apache-2.0]
* 3806⭐ 929🍴 [Easylogging++](https://github.com/amrayn/easyloggingpp)) - Extremely light-weight high performance logging library for C++11 (or higher) applications. [MIT]
* 807⭐ 125🍴 [fmtlog](https://github.com/MengRao/fmtlog)) - A performant fmtlib-style logging library with latency in nanoseconds. [MIT]
* 910⭐ 271🍴 [G3log](https://github.com/KjellKod/g3log)) - Asynchronous logger with Dynamic Sinks. [PublicDomain]
* 7109⭐ 2068🍴 [glog](https://github.com/google/glog)) - C++ implementation of the Google logging module.
* 73⭐ 4🍴 [haclog](https://github.com/MuggleWei/haclog)) - An extremely fast plain C logging library. [MIT]
* [Log4cpp](http://log4cpp.sourceforge.net/) - A library of C++ classes for flexible logging to files, syslog, IDSA and other destinations. [LGPL]
* 1651⭐ 564🍴 [log4cplus](https://github.com/log4cplus/log4cplus)) - A simple to use C++ logging API providing thread-safe, flexible, and arbitrarily granular control over log management and configuration. [BSD & Apache2]
* 1793⭐ 261🍴 [loguru](https://github.com/emilk/loguru)) - A lightweight C++ logging library. [PublicDomain]
* 229⭐ 21🍴 [lwlog](https://github.com/ChristianPanov/lwlog)) - Very fast synchronous and asynchronous C++17 logging library. [MIT]
* 2231⭐ 388🍴 [plog](https://github.com/SergiusTheBest/plog)) - Portable and simple log for C++ in less than 1000 lines of code. [MPL2]
* 491⭐ 48🍴 [reckless](https://github.com/mattiasflodin/reckless)) - Low-latency, high-throughput, asynchronous logging library for C++. [MIT]
* 24569⭐ 4584🍴 [spdlog](https://github.com/gabime/spdlog)) - Super fast, header only, C++ logging library.
* [templog](http://www.templog.org/) - A very small and lightweight C++ library which you can use to add logging to your C++ applications. [Boost]
* [P7Baical](http://baical.net/p7.html) - An open source and cross-platform library for high-speed sending telemetry & trace data with minimal usage of CPU and memory. [LGPL]
* 1576⭐ 163🍴 [Quill](https://github.com/odygrd/quill)) - Asynchronous cross platform low latency logging library. [MIT]
## Machine Learning
* 34141⭐ 18674🍴 [Caffe](https://github.com/BVLC/caffe)) - A fast framework for neural networks. [BSD]
* 8123⭐ 1190🍴 [catboost](https://github.com/catboost/catboost)) - A fast, scalable, high performance Gradient Boosting on Decision Trees library. [Apache2]
* 7095⭐ 1713🍴 [CCV](https://github.com/liuliu/ccv)) - C-based/Cached/Core Computer Vision Library, A Modern Computer Vision Library. [BSD]
* 25879⭐ 21330🍴 [darknet](https://github.com/pjreddie/darknet)) - Open source neural network framework written in C and CUDA. [PublicDomain] 🌎 [website](pjreddie.com/darknet/)
* 13593⭐ 3382🍴 [Dlib](https://github.com/davisking/dlib)) :zap: - A modern C++11 machine learning, computer vision, numerical optimization, and deep learning toolkit. [Boost] [website](http://dlib.net/)
* 31762⭐ 3662🍴 [FAISS](https://github.com/facebookresearch/faiss)) - A library for efficient similarity search and clustering of dense vectors. [MIT]
* 441⭐ 81🍴 [Fido](https://github.com/FidoProject/Fido)) - A highly-modular C++ machine learning library for embedded electronics and robotics. [MIT] [website](http://fidoproject.github.io/)
* 5294⭐ 497🍴 [flashlight](https://github.com/facebookresearch/flashlight)) - A fast, flexible machine learning library from Facebook AI Research written entirely in C++ and based on the ArrayFire tensor library. [BSD-3-Clause] 🌎 [website](fl.readthedocs.io/en/latest/)
* 11311⭐ 1055🍴 [ggml](https://github.com/ggerganov/ggml)) - Tensor library for machine learning with 16-bit and 4-bit quantization support. [MIT]
* 4578⭐ 1636🍴 [libsvm](https://github.com/cjlin1/libsvm)) - A simple, easy-to-use, efficient library for Support Vector Machines. [BSD-3-Clause] 🌎 [website](www.csie.ntu.edu.tw/~cjlin/libsvm/)
* 2821⭐ 241🍴 [m2cgen](https://github.com/BayesWitnesses/m2cgen)) - A CLI tool to transpile trained classic ML models into a native C code with zero dependencies. [MIT]
* 697⭐ 236🍴 [MeTA](https://github.com/meta-toolkit/meta)) - A modern C++ data sciences toolkit. [MIT] 🌎 [website](meta-toolkit.org/)
* 700⭐ 172🍴 [Minerva](https://github.com/dmlc/minerva)) - A fast and flexible system for deep learning. [Apache2]
* 5136⭐ 1610🍴 [mlpack](https://github.com/mlpack/mlpack)) - A scalable c++ machine learning library. [LGPLv3] [website](http://www.mlpack.org/)
* 20590⭐ 4180🍴 [ncnn](https://github.com/Tencent/ncnn)) - A high-performance neural network inference computing framework optimized for mobile platforms. [BSD]
* 79422⭐ 55856🍴 [OpenCV](https://github.com/Itseez/opencv)) :zap: - Open Source Computer Vision Library. [BSD] [website](http://opencv.org/)
* 616⭐ 213🍴 [oneDAL](https://github.com/oneapi-src/oneDAL)) - A powerful machine learning library that helps speed up big data analysis. [Apache]
* 14881⭐ 2946🍴 [ONNX runtime](https://github.com/microsoft/onnxruntime)) - C and C++ library for training and inference ONNX models. ONNX is a standard that AI models can be converted into, regardless of the library they are trained with. [MIT] 🌎 [website](onnxruntime.ai/)
* 266⭐ 64🍴 [Recommender](https://github.com/GHamrouni/Recommender)) - C library for product recommendations/suggestions using collaborative filtering (CF). [BSD]
* 900⭐ 227🍴 [RNNLIB](https://github.com/szcom/rnnlib)) - RNNLIB is a recurrent neural network library for sequence learning problems. [GPLv3]
* 3033⭐ 1038🍴 [SHOGUN](https://github.com/shogun-toolbox/shogun)) - The Shogun Machine Learning Toolbox. [GPLv3]
* 🌎 [sofia-ml](code.google.com/p/sofia-ml/) - The suite of fast incremental algorithms for machine learning. [Apache2]
* 2286⭐ 143🍴 [USearch](https://github.com/unum-cloud/usearch)) - Fast search and clustering library for vectors and strings. [Apache2]
* 1603⭐ 625🍴 [VLFeat](https://github.com/vlfeat/vlfeat)) - The VLFeat open source library implements popular computer vision algorithms specialising in image understanding and local featurexs extraction and matching. [BSD-2-Clause] [website](http://www.vlfeat.org/)
* 26365⭐ 8736🍴 [xgboost](https://github.com/dmlc/xgboost)) - Scalable, Portable and Distributed Gradient Boosting (GBDT, GBRT or GBM) Library, for Python, R, Java, Scala, C++ and more. Runs on single machine, Hadoop, Spark, Flink and DataFlow. [Apache2]
## Math
* 200⭐ 31🍴 [Apophenia](https://github.com/b-k/apophenia)) - A C library for statistical and scientific computing. [GPL2]
* 🌎 [Armadillo](gitlab.com/conradsnicta/armadillo-code) - Fast C++ library for linear algebra & scientific computing. [Apache2] [website](http://arma.sourceforge.net/)
* 1669⭐ 173🍴 [autodiff](https://github.com/autodiff/autodiff)) - A modern, fast and expressive C++ library for automatic differentiation. [MIT] 🌎 [website](autodiff.github.io)
* 🌎 [blaze](bitbucket.org/blaze-lib/blaze) - high-performance C++ math library for dense and sparse arithmetic. [BSD]
* 198⭐ 112🍴 [Boost.Multiprecision](https://github.com/boostorg/multiprecision)) - provides higher-range/precision integer, rational and floating-point types in C++, header-only or with GMP/MPFR/LibTomMath backends. [Boost] 🌎 [website](boost.org/libs/multiprecision)
* [ceres-solver](http://ceres-solver.org/) - C++ library for modeling and solving large complicated nonlinear least squares problems from google. [BSD]
* 5034⭐ 1394🍴 [CGAL](https://github.com/CGAL/cgal)) - Collection of efficient and reliable geometric algorithms. [LGPL&GPL] [website](http://www.cgal.org/)
* [cml](http://cmldev.net/) - free C++ math library for games and graphics. [Boost]
* ?⭐ ?🍴 [CNL](https://github.com/johnmcfarlane/cnl/)) - A Compositional Numeric Library for C++. [Boost]
* 1559⭐ 240🍴 [DirectXMath](https://github.com/microsoft/DirectXMath)) - An all inline SIMD C++ linear algebra library for use in games and graphics apps.
* 13593⭐ 3382🍴 [Dlib](https://github.com/davisking/dlib)) :zap: - A modern C++11 machine learning, computer vision, numerical optimization, and deep learning toolkit. [Boost] [website](http://dlib.net/)
* [Eigen](http://eigen.tuxfamily.org/) - A high-level C++ library of template headers for linear algebra, matrix and vector operations, numerical solvers and related algorithms. [MPL2]
* 🌎 [ExprTk](www.partow.net/programming/exprtk/) - The C++ Mathematical Expression Toolkit Library (ExprTk) is a simple to use, easy to integrate and extremely efficient run-time mathematical expression parser and evaluation engine. [MIT]
* 🌎 [Geometric Tools](www.geometrictools.com) - C++ library for computing in the fields of mathematics, graphics, image analysis and physics. [Boost] 🌎 [website](www.geometrictools.com)
* 9365⭐ 2142🍴 [GLM](https://github.com/g-truc/glm)) - Header-only C++ math library that matches and inter-operates with OpenGL's GLSL math. [MIT] 🌎 [website](glm.g-truc.net/)
* [GMTL](http://ggt.sourceforge.net/) - Graphics Math Template Library is a collection of tools implementing Graphics primitives in generalized ways. [GPL2]
* 🌎 [GMP](gmplib.org/) - A C library for arbitrary precision arithmetic, operating on signed integers, rational numbers, and floating-point numbers. [LGPL3 & GPL2]
* 763⭐ 56🍴 [Klein](https://github.com/jeremyong/klein)) - A fast, SIMD-optimized C++17 Geometric Algebra library for point, line, and plane projections, intersections, joins, rigid-body motion, and more. [MIT] 🌎 [website](jeremyong.com/klein)
* 869⭐ 66🍴 [linalg.h](https://github.com/sgorsten/linalg)) - Single header, public domain, short vector math library for C++. [Unlicense]
* 1225⭐ 87🍴 [MatX](https://github.com/NVIDIA/MatX)) - A GPU-accelerated C++17 numerical computing library with a MATLAB/Python-like syntax. [BSD 3-clause]
* 654⭐ 242🍴 [MIRACL](https://github.com/CertiVox/MIRACL)) - A Multiprecision Integer and Rational Arithmetic Cryptographic Library. [AGPL]
* 3598⭐ 555🍴 [NumCpp](https://github.com/dpilger26/NumCpp)) - A templatized header only C++ implementation of the Python Numpy library. [MIT]
* 🌎 [muparser](beltoforion.de/en/muparser) - muParser is an extensible high performance math expression parser library written in C++. [MIT]
* 656⭐ 194🍴 [LibTomMath](https://github.com/libtom/libtommath)) - A free open source portable number theoretic multiple-precision integer library written entirely in C. [PublicDomain & WTFPL] [website](http://www.libtom.net/)
* 929⭐ 136🍴 [linmath.h](https://github.com/datenwolf/linmath.h)) - A lean linear math library, aimed at graphics programming. [WTFPL]
* 🌎 [lp_solve](sourceforge.net/projects/lpsolve) - A library used to formulate and solve linear programming problems. [LGPL] [website](http://lpsolve.sourceforge.net)
* 6432⭐ 1508🍴 [OpenBLAS](https://github.com/xianyi/OpenBLAS)) - An optimized BLAS library based on GotoBLAS2 1.13 BSD version. [BSD 3-clause] [website](http://www.openblas.net/)
* 🌎 [PCG-rand](www.pcg-random.org/) - PCG is a family of simple fast space-efficient statistically good algorithms for random number generation. Unlike many general-purpose RNGs, they are also hard to predict. [Apache]
* 5439⭐ 1796🍴 [QuantLib](https://github.com/lballabio/quantlib)) - A free/open-source library for quantitative finance. [Modified BSD] [website](http://quantlib.org/)
* 1104⭐ 60🍴 [SimSIMD](https://github.com/ashvardanian/SimSIMD)) - Vector distance functions for x86 AVX2, AVX-512, Arm NEON, and SVE. [Apache2]
* 531⭐ 72🍴 [StatsLib](https://github.com/kthohr/stats)) - A C++ header-only library of statistical distribution functions. [Apache2] 🌎 [website](www.kthohr.com/statslib.html)
* 1177⭐ 282🍴 [SymEngine](https://github.com/symengine/symengine)) - Fast symbolic manipulation library, a rewriting of SymPy's core in C++. [MIT]
* 1611⭐ 245🍴 [TinyExpr](https://github.com/codeplea/tinyexpr)) - A C library for parsing and evaluating math expressions from strings. [zlib]
* 1459⭐ 150🍴 [Vc](https://github.com/VcDevel/Vc)) - SIMD Vector Classes for C++. [BSD]
* [Versor](http://versor.mat.ucsb.edu/) - A (fast) Generic C++ library for Geometric Algebras, including Euclidean, Projective, Conformal, Spacetime (etc).
* 166⭐ 33🍴 [Wagyu](https://github.com/mapbox/wagyu)) - A general library for geometry operations of union, intersections, difference, and xor. [mapbox-wagyu original]
* 🌎 [Wykobi](www.wykobi.com) - A C++ library of efficient, robust and simple to use C++ 2D/3D oriented computational geometry routines. [MIT]
* 3375⭐ 401🍴 [xtensor](https://github.com/xtensor-stack/xtensor)) - A C++14 library for numerical analysis with multi-dimensional array expressions, inspired by NumPy syntax. [BSD 3-clause] 🌎 [website](xtensor-stack.github.io/xtensor)
* 412⭐ 59🍴 [universal](https://github.com/stillwater-sc/universal)) - A C++14 header-only library implementing arbitrary posit arithmetic. The posit number system is a tapered floating point that is more efficient than IEEE floating point. Posits enable reproducible computational science. [MIT license]
* 326⭐ 41🍴 [XAD](https://github.com/auto-differentiation/xad)) - Powerful Automatic Differentiation for C++. [AGPL] 🌎 [website](auto-differentiation.github.io/)
## Memory Allocation
* 3013⭐ 407🍴 [Boehm GC](https://github.com/ivmai/bdwgc)) - Conservative garbage collector for C and C++. [similar to X11] [website](http://www.hboehm.info/gc/)
* 1603⭐ 145🍴 [C Smart Pointers](https://github.com/Snaipe/libcsptr)) - Smart pointers for the (GNU) C programming language. [MIT]
* 1112⭐ 129🍴 [Hoard](https://github.com/emeryberger/Hoard)) - Fast, Scalable, and Memory-efficient Malloc for Linux, Windows, and Mac. [Apache-2.0] [website](http://hoard.org/)
* 9595⭐ 1455🍴 [jemalloc](https://github.com/jemalloc/jemalloc)) - General purpose malloc(3) implementation that emphasizes fragmentation avoidance and scalable concurrency support. [BSD] [website](http://jemalloc.net/)
* 1497⭐ 196🍴 [memory](https://github.com/foonathan/memory)) - STL compatible C++ memory allocator library. [ZLib]
* 1762⭐ 160🍴 [memory-allocators](https://github.com/mtrebi/memory-allocators)) - Custom memory allocators to improve the performance of dynamic memory allocation. [MIT]
* 10646⭐ 873🍴 [mimalloc](https://github.com/microsoft/mimalloc)) - A compact general purpose allocator with excellent performance. [MIT]
* 2176⭐ 191🍴 [rpmalloc](https://github.com/mjansson/rpmalloc)) - Cross platform lock free thread caching 16-byte aligned memory allocator implemented in C. [PublicDomain]
* 1584⭐ 110🍴 [snmalloc](https://github.com/microsoft/snmalloc)) - Message passing based high-performance allocator. [MIT]
* 4424⭐ 480🍴 [TCMalloc](https://github.com/google/tcmalloc)) - Google's fast, multi-threaded malloc implementation. [Apache-2.0] 🌎 [website](google.github.io/tcmalloc/)
* 151⭐ 10🍴 [buddy_alloc](https://github.com/spaskalev/buddy_alloc)) - A single header buddy memory allocator for C with bounded allocation costs. [0BSD]
* 969⭐ 64🍴 [tgc](https://github.com/orangeduck/tgc)) - A tiny garbage collector for C written in \~500 LOC. [BSD]
## Multimedia
* [GStreamer](http://gstreamer.freedesktop.org/) - A library for constructing graphs of media-handling components. [LGPL]
* 947⭐ 218🍴 [libass](https://github.com/libass/libass)) - Portable subtitle renderer for the ASS/SSA subtitle format. [ISC]
* 1084⭐ 394🍴 [libav](https://github.com/libav/libav)) - A collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata. [LGPL v2.1+ and others] 🌎 [website](www.libav.org/)
* [LIVE555 Streaming Media](http://www.live555.com/liveMedia/) - Multimedia streaming library using open standard protocols (RTP/RTCP, RTSP, SIP). [LGPL]
* 🌎 [libVLC](wiki.videolan.org/LibVLC) - libVLC (VLC SDK) media framework. [GPL]
* 639⭐ 177🍴 [MediaInfoLib](https://github.com/MediaArea/MediaInfoLib)) - Convenient unified display of the most relevant technical and tag data for video and audio files. [BSD]
* 3990⭐ 1507🍴 [QtAv](https://github.com/wang-bin/QtAV)) - A multimedia playback framework based on Qt and FFmpeg to write a player easily. [LGPL] [website](http://wang-bin.github.io/QtAV/)
* 10226⭐ 1867🍴 [SDL](https://github.com/libsdl-org/SDL)) :zap: - Simple DirectMedia Layer. [zlib] 🌎 [website](libsdl.org)
* 10280⭐ 1731🍴 [SFML](https://github.com/SFML/SFML)) :zap: - Simple and Fast Multimedia Library. [zlib] [website](http://www.sfml-dev.org/)
* 1191⭐ 348🍴 [TagLib](https://github.com/taglib/taglib)) - A library for reading and editing the metadata of several popular audio formats. [LGPL/MPL] 🌎 [website](taglib.org/)
## Networking
* 1385⭐ 86🍴 [ada](https://github.com/ada-url/ada)) - WHATWG-compliant and fast URL parser written in modern C++. [Apache-2.0/MIT]
* [ACE](http://www.dre.vanderbilt.edu/~schmidt/ACE.html) - An OO Network Programming Toolkit in C++. [?MIT?]
* 1256⭐ 418🍴 [Boost.Asio](https://github.com/boostorg/asio)) :zap: - A cross-platform C++ library for network and low-level I/O programming. [Boost] 🌎 [website](boost.org/libs/asio)
* 4384⭐ 639🍴 [Boost.Beast](https://github.com/boostorg/beast)) :zap: - HTTP and WebSocket built on Boost.Asio in C++11. [Boost] 🌎 [website](www.boost.org/libs/beast)
* 141⭐ 22🍴 [Breep](https://github.com/Organic-Code/Breep)) - Event based, high-level C++14 peer-to-peer library. [EUPL-1.1 (OSI approved)]
* 8029⭐ 1656🍴 [C++ REST SDK](https://github.com/Microsoft/cpprestsdk)) - C++ REST SDK (previously named Casablanca). [Apache2]
* 1932⭐ 377🍴 [Restbed](https://github.com/corvusoft/restbed)) - C++11 Asynchronous RESTful framework. [AGPL]
* 1166⭐ 94🍴 [Restinio](https://github.com/Stiffstream/restinio)) - A header-only C++14 library that gives you an embedded HTTP/Websocket server. [BSD]
* 1883⭐ 609🍴 [c-ares](https://github.com/c-ares/c-ares)) - A C library for asynchronous DNS requests. [MIT]
* 13222⭐ 2316🍴 [cpp-httplib](https://github.com/yhirose/cpp-httplib)) - A single file C++11 header-only HTTP/HTTPS server library. [MIT]
* [cpp-netlib](http://cpp-netlib.org/) - A collection of open-source libraries for high level network programming. [Boost]
* 139⭐ 74🍴 [cpp-netlib/uri](https://github.com/cpp-netlib/uri)) - URI parser/builder library for C++, compatible with RFC 3986 and RFC 3987. [Boost]
* 1438⭐ 284🍴 [CppServer](https://github.com/chronoxor/CppServer)) - Ultra fast and low latency asynchronous socket server & client C++ library with support TCP, SSL, UDP, HTTP, HTTPS, WebSocket protocols and 10K connections problem solution. [MIT]
* 6619⭐ 943🍴 [cpr](https://github.com/whoshuu/cpr)) - A modern C++ HTTP requests library with a simple but powerful interface. Modeled after the Python Requests module. [MIT] 🌎 [website](docs.libcpr.org)
* 634⭐ 175🍴 [curlcpp](https://github.com/JosephP91/curlcpp)) - An object oriented C++ wrapper for CURL(libcurl). [MIT]
* 1684⭐ 360🍴 [curlpp](https://github.com/jpbarrette/curlpp)) -C++ wrapper around libcURL. [MIT]
* 3416⭐ 1251🍴 [DPDK](https://github.com/DPDK/dpdk)) - Data Plane Development Kit, libraries and drivers for fast packet processing. [BSD-3-Clause & GPL-2.0] 🌎 [website](www.dpdk.org/)
* 1440⭐ 220🍴 [Dyad.c](https://github.com/rxi/dyad)) - Asynchronous networking for C. [MIT]
* 2778⭐ 675🍴 [ENet](https://github.com/lsalzman/enet)) - Reliable UDP networking library. [MIT] [website](http://enet.bespin.org/)
* 3613⭐ 946🍴 [evpp](https://github.com/Qihoo360/evpp)) - C++ high performance networking with TCP/UDP/HTTP protocols. [BSD]
* 213⭐ 69🍴 [FTP client for C++](https://github.com/embeddedmz/ftpclient-cpp)) - C++ client for making FTP requests. [MIT]
* 10923⭐ 847🍴 [H2O](https://github.com/h2o/h2o)) - An optimized HTTP server with support for HTTP/1.x and HTTP/2. It can also be used as a library. [MIT]
* 6357⭐ 1531🍴 [HTTP Parser](https://github.com/nodejs/http-parser)) :zap: - A http request/response parser for C. [MIT]
* 15444⭐ 2506🍴 [KCP](https://github.com/skywind3000/kcp/blob/master/README.en.md)) - A fast and reliable ARQ protocol that helps applications to reduce network latency. [MIT]
* [libcurl](http://curl.haxx.se/libcurl/) - Multiprotocol file transfer library. [MIT/X derivate license]
* 898⭐ 188🍴 [libhttpserver](https://github.com/etr/libhttpserver)) - C++ library for creating an embedded Rest HTTP server (and more). [LGPL2.1]
* [Libmicrohttpd](http://www.gnu.org/software/libmicrohttpd/) - GNU libmicrohttpd is a small C library that is supposed to make it easy to run an HTTP server as part of another application. [LGPL v2.1+]
* 2722⭐ 856🍴 [libpcap](https://github.com/the-tcpdump-group/libpcap)) - A portable C/C++ library for network traffic capture. [BSD] 🌎 [website](www.tcpdump.org/)
* 1785⭐ 289🍴 [libquic](https://github.com/devsisters/libquic)) - A QUIC protocol library extracted from Chromium's QUIC Implementation. [BSD]
* 320⭐ 3156🍴 [librdkafka](https://github.com/edenhill/librdkafka)) - Apache Kafka client library for C and C++. [BSD-2-Clause]
* 4806⭐ 1492🍴 [libwebsockets](https://github.com/warmcat/libwebsockets)) - A lightweight pure C WebSocket implementation that provides both client and server libraries. [LGPL2.1 + static link exception] 🌎 [website](libwebsockets.org/)
* 🌎 [Lithium](matt-42.github.io/lithium/) - Build high performance C++ HTTP servers without being a C++ expert. [MIT]
* [lwIP](http://savannah.nongnu.org/projects/lwip/) - A lightweight TCP/IP stack. [Modified BSD]
* 387⭐ 104🍴 [mailio](https://github.com/karastojko/mailio)) - mailio is a cross platform C++ library for MIME format and SMTP, POP3 and IMAP protocols. [BSD]
* 11200⭐ 2738🍴 [Mongoose](https://github.com/cesanta/mongoose)) - Extremely lightweight webserver. [GPL2]
* 788⭐ 277🍴 [MQTT-C](https://github.com/LiamBindle/MQTT-C)) - A portable MQTT C client for embedded systems and PCs alike. [MIT] 🌎 [website](liambindle.ca/MQTT-C)
* 2011⭐ 439🍴 [mTCP](https://github.com/mtcp-stack/mtcp)) - Highly scalable user-level TCP stack for multicore systems. [Modified BSD]
* 14903⭐ 5182🍴 [Muduo](https://github.com/chenshuo/muduo)) - A C++ non-blocking network library for multi-threaded server in Linux. [BSD]
* 4662⭐ 875🍴 [nghttp2](https://github.com/nghttp2/nghttp2)) - HTTP/2 C Library. [MIT] 🌎 [website](nghttp2.org/)
* 870⭐ 95🍴 [nghttp3](https://github.com/ngtcp2/nghttp3)) - HTTP/3 library written in C. [MIT] 🌎 [website](nghttp2.org/nghttp3/)
* 2022⭐ 252🍴 [Onion](https://github.com/davidmoreno/onion)) - HTTP server library in C designed to be lightweight and easy to use. [Apache2/GPL2]
* 2713⭐ 349🍴 [PF_RING™](https://github.com/ntop/PF_RING)) - High-speed packet processing framework. [LGPL-2.1] 🌎 [website](www.ntop.org/products/packet-capture/pf_ring/)
* 1855⭐ 250🍴 [PicoHTTPParser](https://github.com/h2o/picohttpparser)) - A tiny, primitive, fast HTTP request/response parser. [MIT]
* [POCO](https://github.com/pocoproject) :zap: - C++ class libraries and frameworks for building network- and internet-based applications that run on desktop, server, mobile and embedded systems. [Boost] [website](http://pocoproject.org/)
* 8161⭐ 1495🍴 [Proxygen](https://github.com/facebook/proxygen)) - Facebook's collection of C++ HTTP libraries including an easy to use HTTP server. [BSD]
* 9736⭐ 592🍴 [RedPanda](https://github.com/redpanda-data/redpanda)) - Streaming data platform for developers. Kafka API compatible. 10x faster. [BSL]
* 3318⭐ 1024🍴 [RakNet](https://github.com/OculusVR/RakNet)) - A cross platform, open source, C++ networking engine for game programmers. [BSD]
* 1574⭐ 377🍴 [restclient-cpp](https://github.com/mrtazz/restclient-cpp)) - Simple REST client for C++. It wraps libcurl for HTTP requests. [MIT]
* 739⭐ 119🍴 [Seasocks](https://github.com/mattgodbolt/seasocks)) - Simple, small, C++ embeddable webserver with WebSockets support. [BSD]
* 563⭐ 91🍴 [tlse](https://github.com/eduardsui/tlse)) - Single C file TLS 1.2/1.3 implementation, using tomcrypt as crypto library [BSD-2-Clause]
* 1137⭐ 94🍴 [TQUIC](https://github.com/tencent/tquic)) - A high-performance, lightweight, and cross-platform QUIC library, exposed to C and C++. [Apache2]
* 591⭐ 179🍴 [Tufão](https://github.com/vinipsmaker/tufao)) - An asynchronous web framework for C++ built on top of Qt. [LGPL2]
* 336⭐ 79🍴 [uriparser](https://github.com/uriparser/uriparser)) - Strictly RFC 3986 compliant URI parsing and handling library. [BSD-3-Clause]
* 17481⭐ 1762🍴 [uWebSockets](https://github.com/uNetworking/uWebSockets)) - µWS is one of the most lightweight, efficient & scalable WebSocket & HTTP server implementations available. [Zlib]
* 1151⭐ 43🍴 [UCall](https://github.com/unum-cloud/ucall)) - A high-performance SIMD-accelerated RPC library on io_uring. [Apache2]
* 694⭐ 69🍴 [WAFer](https://github.com/riolet/WAFer)) - A C language-based ultra-light software platform for scalable server-side and networking applications. Think node.js for C programmers. [GPL2]
* 3059⭐ 541🍴 [Wangle](https://github.com/facebook/wangle)) - A client/server application framework to build asynchronous, event-driven modern C++ services. [Apache-2.0]
* 2877⭐ 389🍴 [wdt](https://github.com/facebook/wdt)) - An embeddedable library (and command line tool) aiming to transfer data between 2 systems as fast as possible over multiple TCP paths. [BSD-3-Clause]
* 7092⭐ 1977🍴 [WebSocket++](https://github.com/zaphoyd/websocketpp)) - C++/Boost Asio based websocket client/server library. [BSD]
* 2754⭐ 675🍴 [PcapPlusPlus](https://github.com/seladb/PcapPlusPlus)) - a multiplatform C++ network sniffing and packet parsing and crafting framework. [Unlicense]
* 9799⭐ 2363🍴 [ZeroMQ](https://github.com/zeromq/libzmq)) - High-speed, modular asynchronous communication library. [LGPL3/MPL2] [website](http://zeromq.org/)
## Office Open XML
*Libraries for parsing and manipulating xlsx, pptx, docx, etc.*
* 426⭐ 110🍴 [DuckX](https://github.com/amiremohamadi/DuckX)) - C++ library for creating and modifying Microsoft Word (.docx) files. [MIT]
* 🌎 [FreeXL](www.gaia-gis.it/fossil/freexl/index) - an open source library to extract valid data from within Spreadsheets. [MPL/GPL-2/LGPL-2]
* 443⭐ 126🍴 [libxls](https://github.com/libxls/libxls)) - Read binary Excel files from C/C++ [BSD-2-Clause]
* 1529⭐ 336🍴 [libxlsxwriter](https://github.com/jmcnamara/libxlsxwriter)) - A C library for creating Excel XLSX files. [BSD-2-Clause] 🌎 [website](libxlsxwriter.github.io/)
* 1393⭐ 337🍴 [OpenXLSX](https://github.com/troldal/OpenXLSX)) - A C++ library for reading, writing, creating and modifying Microsoft Excel® (.xlsx) files. [BSD-3-Clause]
* 🌎 [SimpleXlsxWriter](sourceforge.net/projects/simplexlsx/) - XLSX files writer for Microsoft Excel 2007 and above. [zlib]
* 432⭐ 112🍴 [XLSX I/O](https://github.com/brechtsanders/xlsxio)) - C library for reading and writing .xlsx files. [MIT]
## PDF
*Libraries for parsing and manipulating PDF documents.*
* 1777⭐ 512🍴 [libharu](https://github.com/libharu/libharu)) - A free, cross platform, open-sourced software library for generating PDF. [zlib]
* 🌎 [litePDF](litepdf.sourceforge.io) - Library to create and edit PDF documents that uses GDI functions through a device context to draw the page content. [LGPL v3 and zlib]
* 🌎 [MuPDF](mupdf.com/) - A lightweight PDF, XPS, and E-book viewer. [AGPL/Proprietary]
* 905⭐ 217🍴 [PDF-Writer](https://github.com/galkahana/PDF-Writer)) - High performance library for creating, modiyfing and parsing PDF files in C++ [Apache-2.0] 🌎 [website](www.pdfhummus.com/)
* 200⭐ 44🍴 [pdfio](https://github.com/michaelrsweet/pdfio)) - A simple C library for reading and writing PDF files. [Apache-2] 🌎 [website](www.msweet.org/pdfio/)
* 🌎 [PDFium](pdfium.googlesource.com/pdfium/) - PDF generation and rendering library. [BSD-3-Clause]
* [PoDoFo](http://podofo.sourceforge.net/) - A library to work with the PDF file format. [LGPL]
* 🌎 [Poppler](poppler.freedesktop.org/) - Open-source multi-backend PDF rendering library based on the xpdf-3.0 code base. [GPLv2/GPLv3]
* 🌎 [Xpdf](www.xpdfreader.com/) - Xpdf is a free PDF viewer and toolkit, including a text extractor, image converter, HTML converter, and more. [GPL v2/GPL v3]
* [DynaPDF](http://www.dynaforms.com/) - An easy-to-use PDF generation library. [Commercial]
## Physics
*Dynamics simulation engines*
* 8370⭐ 1545🍴 [Box2D](https://github.com/erincatto/Box2D)) - A 2D physics engine for games. [BSD-like]
* 12735⭐ 2874🍴 [Bullet](https://github.com/bulletphysics/bullet3)) - A 3D physics engine for games. [zlib] [website](http://bulletphysics.org)
* 2220⭐ 352🍴 [Chipmunk](https://github.com/slembcke/Chipmunk2D)) - A fast and lightweight 2D game physics library. [MIT] 🌎 [website](chipmunk-physics.net/)
* 6876⭐ 458🍴 [Jolt Physics](https://github.com/jrouwe/JoltPhysics)) - A multi core friendly rigid body physics and collision detection library. [MIT]
* 1048⭐ 246🍴 [Kratos](https://github.com/KratosMultiphysics/Kratos)) - framework for building parallel, multi-disciplinary simulation software, aiming at modularity, extensibility, and high performance. [BSD] [website](http://www.cimne.com/kratos/)
* 4733⭐ 638🍴 [LiquidFun](https://github.com/google/liquidfun)) - A 2D physics engine for games. [BSD-like]
* 952⭐ 181🍴 [Newton Dynamics](https://github.com/MADEAPPS/newton-dynamics)) - An integrated solution for real time simulation of physics environments. [zlib]
* [ODE](http://www.ode.org/) - Open Dynamics Engine - An open source, high performance library for simulating rigid body dynamics. [BSD&LGPL]
* 321⭐ 122🍴 [ofxBox2d](https://github.com/vanderlin/ofxBox2d)) - openFrameworks wrapper for Box2D. [BSD-like]
* 2353⭐ 280🍴 [PhysX](https://github.com/NVIDIAGameWorks/PhysX-3.4)) - An open-source realtime physics engine middleware SDK developed by Nvidia as a part of Nvidia GameWorks software suite. [BSD-3-Clause]
* 133⭐ 24🍴 [PlayRho](https://github.com/louis-langholtz/PlayRho)) - An interactive physics engine & library. [Zlib]
* 2254⭐ 471🍴 [Project Chrono](https://github.com/projectchrono/chrono)) - An open source multi-physics simulation engine. [BSD-3-Clause] 🌎 [website](projectchrono.org/)
* 544⭐ 120🍴 [Quantum++](https://github.com/vsoftco/qpp)) - A modern C++11 quantum computing library. [MIT]
* 196⭐ 8🍴 [QuarkPhysics](https://github.com/erayzesen/QuarkPhysics)) - A 2D Soft Body and Rigid Body Physics Engine. [MIT]
* 2338⭐ 472🍴 [Simbody](https://github.com/simbody/simbody)) - High-performance C++ multibody dynamics/physics library for simulating articulated biomechanical and mechanical systems like vehicles, robots, and the human skeleton. [Apache2]
* 937⭐ 312🍴 [SOFA](https://github.com/sofa-framework/sofa)) - SOFA is an open-source framework targeting at real-time simulation, with an emphasis on medical simulation. [LGPL] 🌎 [website](www.sofa-framework.org)
## Reflection
* 222⭐ 37🍴 [config-loader](https://github.com/netcan/config-loader)) - A C++17 static reflection framework, from parse configuration file to native data structure. [MIT]
* 1684⭐ 173🍴 [Better Enums](https://github.com/aantron/better-enums)) - Reflective enums (to string, iteration). Single header. [BSD] [website](http://aantron.github.io/better-enums/)
* 276⭐ 28🍴 [clReflect](https://github.com/Celtoys/clReflect)) - C++ Reflection using clang. [MIT]
* 220⭐ 60🍴 [CPFG](https://github.com/cpgf/cpgf)) - A C++03 library for reflection, callback and script binding. [Apache2]
* 669⭐ 94🍴 [CPP-Reflection](https://github.com/AustinBrunkhorst/CPP-Reflection)) - C++ Reflection using clang. [MIT]
* 97⭐ 7🍴 [Easy Reflection](https://github.com/chocolacula/easy_reflection_cpp)) - Easy and fast reflection + serialization solution like in Rust, Java or Go. [Apache]
* 5011⭐ 447🍴 [Magic Enum](https://github.com/Neargye/magic_enum)) - Header-only C++17 library provides static reflection for enums (to string, from string, iteration), work with any enum type without any macro or boilerplate code. [MIT]
* 206⭐ 13🍴 [magic_get](https://github.com/apolukhin/magic_get)) - std::tuple like methods for user defined types without any macro or boilerplate code. [Boost]
* 596⭐ 49🍴 [meta](https://github.com/skypjack/meta)) - Header-only, non-intrusive and macro-free runtime reflection system in C++. [MIT]
* 2102⭐ 111🍴 [Nameof](https://github.com/Neargye/nameof)) - Header-only C++17 library provides nameof macros and functions to obtain the simple name of variable, type, function, macro, and enum. [MIT]
* 648⭐ 97🍴 [Ponder](https://github.com/billyquith/ponder)) - A C++11 library for reflection. [MIT]
* 325⭐ 17🍴 [REFLECT](https://github.com/qlibs/reflect)) - C++20 Static Reflection library. [MIT]
* 1145⭐ 103🍴 [reflect-cpp](https://github.com/getml/reflect-cpp)) - Serialization through reflection, including automatic field name retrieval from structs. [MIT]
* 3200⭐ 445🍴 [RTTR](https://github.com/rttrorg/rttr)) - A C++11 library for reflection. [MIT] [website](http://www.rttr.org)
* 22⭐ 1🍴 [simple_enum](https://github.com/arturbac/simple_enum)) - An Fast, Intuitive and Type-Safe C++ Enumeration Support Library. [BSL-1.0] 🌎 [website](arturbac.github.io/simple_enum/)
* 97⭐ 11🍴 [TSMP](https://github.com/fabian-jung/tsmp)) - An intrusion and macro-free C++20 library for static reflection. It uses libclang to extract reflection data from your source code and makes it usable via template specialization. [MIT]
* 503⭐ 47🍴 [visit_struct](https://github.com/cbeck88/visit_struct)) - A miniature library for struct-field reflection in C++. [Boost]
* 225⭐ 22🍴 [Refureku](https://github.com/jsoysouvanh/Refureku)) - A C++17 runtime reflection and code generation library. [MIT]
## Regular Expression
* 382⭐ 50🍴 [CppVerbalExpressions](https://github.com/VerbalExpressions/CppVerbalExpressions)) - C++ regular expressions made easy. [MIT]
* 3390⭐ 187🍴 [CTRE](https://github.com/hanickadot/compile-time-regular-expressions)) - A Compile time PCRE (almost) compatible regular expression matcher. [MIT]
* 4842⭐ 722🍴 [Hyperscan](https://github.com/intel/hyperscan)) - Hyperscan is a high-performance multiple regex matching library by Intel. Provides simultaneous matching of large numbers of regexps (up to tens of thousands). Typically used in a DPI library stack. [BSD]
* 2323⭐ 317🍴 [Oniguruma](https://github.com/kkos/oniguruma)) - A modern and flexible regular expressions library that supports a variety of character encodings. [BSD]
* [PCRE](http://pcre.org/) - A regular expression C library inspired by the regular expression capabilities in Perl. [BSD]
* 332⭐ 30🍴 [PIRE](https://github.com/yandex/pire)) - Perl Incompatible Regular Expressions library by Yandex. Can be really fast (more than 400 MB/s). [LPGL v3.0]
* 9001⭐ 1142🍴 [RE2](https://github.com/google/re2)) - A software library for regular expressions via a finite-state machine using automata theory. [BSD-3-Clause]
* 535⭐ 113🍴 [SLRE](https://github.com/cesanta/slre)) - Super Light Regexp engine for C/C++. [GPLv2/Proprietary]
* 617⭐ 107🍴 [sregex](https://github.com/openresty/sregex)) - A non-backtracking NFA/DFA-based Perl-compatible regex engine library for matching on large data streams. [BSD]
* 🌎 [SRELL](www.akenotsuki.com/misc/srell/en/) - Unicode-aware regular expression template library for C++. [BSD]
* 513⭐ 55🍴 [Vectorscan](https://github.com/VectorCamp/vectorscan)) - A portable fork of the high-performance regular expression matching library. [BSD-3-Clause] 🌎 [website](www.vectorcamp.gr/project/vectorscan/)
## Robotics
* [MOOS-IvP](http://moos-ivp.org) - A set of open source C++ modules for providing autonomy on robotic platforms, in particular autonomous marine vehicles.
* [MRPT](http://www.mrpt.org/) - Mobile Robot Programming Toolkit. [BSD]
* 10047⭐ 4622🍴 [PCL](https://github.com/PointCloudLibrary/pcl)) - Point Cloud Library is a standalone, large scale, open project for 2D/3D image and point cloud processing. [BSD] [website](http://www.pointclouds.org/)
* [Robotics Library (RL)](http://www.roboticslibrary.org/) - A self-contained C++ library for robot kinematics, motion planning and control. [BSD]
* 🌎 [RobWork](gitlab.com/sdurobotics/RobWork) - A collection of C++ libraries for simulation and control of robot systems. [Apache2] [website](http://www.robwork.dk/)
* [ROS](http://wiki.ros.org/) - Robot Operating System provides libraries and tools to help software developers create robot applications. [BSD]
* 736⭐ 165🍴 [Ruckig](https://github.com/pantor/ruckig)) - Real-time motion generation for robots and machines. [MIT] 🌎 [website](ruckig.com)
* 530⭐ 195🍴 [YARP (Yet Another Robot Platform)](https://github.com/robotology/yarp)) - Library and toolkit for communication and device interfaces. [BSD-3-Clause] [website](http://www.yarp.it/)
* 20⭐ 8🍴 [SPICE Toolkit](https://github.com/arturania/cspice)) - Library and toolkit for computing geometric information used in planning and analyzing science observations obtained from robotic spacecraft. [MIT] 🌎 [website](naif.jpl.nasa.gov/naif/toolkit.html)
## Scientific Computing
* 740⭐ 112🍴 [AMGCL](https://github.com/ddemidov/amgcl)) - a header-only C++ library for solving large sparse linear systems with algebraic multigrid. [MIT]
* 329⭐ 21🍴 [Au](https://github.com/aurora-opensource/au)) - A C++14-compatible physical units library with no dependencies and a single-file delivery option. Emphasis on safety, accessibility, performance, and developer experience. [Apache 2.0] 🌎 [website](aurora-opensource.github.io/au/main/)
* [FFTW](http://www.fftw.org/) - A C library for computing the DFT in one or more dimensions. [GPL]
* [GSL](http://www.gnu.org/software/gsl/) - GNU scientific library. [GPL]
* 763⭐ 184🍴 [preCICE](https://github.com/precice/precice)) - Coupling library for partitioned multi-physics simulations (FSI, CHT, and more). [LGPL] 🌎 [website](precice.org/)
* 1871⭐ 185🍴 [TileDB](https://github.com/TileDB-Inc/TileDB)) - Fast Dense and Sparse Multidimensional Array DBMS. [MIT] 🌎 [website](tiledb.io/)
* 1221⭐ 570🍴 [Trilinos](https://github.com/trilinos/Trilinos)) - High performance PDE solvers. [BSD]
* 9000⭐ 2379🍴 [Torch](https://github.com/torch/torch7)) - A scientific computing framework with wide support for machine learning algorithms that puts GPUs first. [BSD-3-Clause] [website](http://torch.ch/)
## Scripting
* 🌎 [AngelScript](www.angelcode.com/angelscript/) - AngelScript is a game-oriented interpreted/compiled scripting language. [zlib]
* 474⭐ 205🍴 [Boost.Python](https://github.com/boostorg/python)) - A C++ library which enables seamless interoperability between C++ and the Python programming language. [Boost] 🌎 [website](boost.org/libs/python)
* 1188⭐ 67🍴 [cppimport](https://github.com/tbenthompson/cppimport)) - Import C++ files directly from Python! [MIT]
* 3141⭐ 518🍴 [CppSharp](https://github.com/mono/CppSharp)) - Tools and libraries to glue C/C++ APIs to high-level languages. [MIT]
* ?⭐ ?🍴 [ChaiScript](https://github.com/ChaiScript/ChaiScript/)) - An easy to use embedded scripting language for C++. [BSD] [website](http://chaiscript.com/)
* 2107⭐ 92🍴 [ctypes.sh](https://github.com/taviso/ctypes.sh)) - A foreign function interface for bash. [MIT]
* 9572⭐ 1491🍴 [Cython](https://github.com/cython/cython)) - Cython is an optimising static compiler for both the Python programming language and the extended Cython programming language (based on Pyrex). It makes writing C extensions for Python as easy as Python itself. [Apache] [website](http://cython.org/)
* 🌎 [djinni](djinni.xlcpp.dev) - A tool for generating cross-language type declarations and interface bindings. [Apache2]
* 5965⭐ 515🍴 [Duktape](https://github.com/svaarala/duktape)) - An embeddable JavaScript engine with compact footprint. [MIT] [website](http://duktape.org)
* 4514⭐ 586🍴 [JavaCpp](https://github.com/bytedeco/javacpp)) - The missing bridge between Java and native C++. [Apache2]
* 3230⭐ 705🍴 [libffi](https://github.com/libffi/libffi)) - A portable foreign-function interface library. [MIT] 🌎 [website](sourceware.org/libffi/)
* [Lua](http://www.lua.org/) - A minimal and fast scripting engine for configuration files and basic application scripting. [MIT]
* 1650⭐ 347🍴 [LuaBridge](https://github.com/vinniefalco/LuaBridge)) - A lightweight, dependency-free library for binding Lua to C++. [MIT]
* 254⭐ 40🍴 [LuaBridge3](https://github.com/kunitoki/LuaBridge3)) - A lightweight, dependency-free library for binding Lua, LuaJIT, Luau and Ravi to C++. [MIT]
* 157⭐ 23🍴 [luacxx](https://github.com/dafrito/luacxx)) - C++11 API for creating Lua bindings. [MIT]
* 🌎 [MiniScript](miniscript.org/) - scripting language modern, elegant, easy to learn, and easy to embed in your own C# or C++ projects. [MIT]
* 1978⭐ 119🍴 [nbind](https://github.com/charto/nbind)) - Magical headers that make your C++ library accessible from JavaScript. [MIT]
* 1429⭐ 336🍴 [PHP-CPP](https://github.com/CopernicaMarketingSoftware/PHP-CPP)) - A library to build PHP extensions with C++. [Apache2] [website](http://www.php-cpp.com/)
* 1631⭐ 114🍴 [pocketpy](https://github.com/blueloveTH/pocketpy)) - C++17 header-only Python interpreter for game scripting. [MIT] 🌎 [website](pocketpy.dev/)
* 15868⭐ 2119🍴 [pybind11](https://github.com/pybind/pybind11)) - Seamless operability between C++11 and Python. [BSD]
* 🌎 [QuickJS](bellard.org/quickjs/) - a small and embeddable JavaScript engine. [MIT]
* 🌎 [SIP](riverbankcomputing.com/software/sip/intro) - C or C++ Bindings Generator for Python v2 and v3. [GPL]
* 4263⭐ 520🍴 [sol2](https://github.com/ThePhD/sol2)) - A C++ <-> Lua API wrapper with advanced features and top notch performance. [MIT]
* 5811⭐ 1240🍴 [SWIG](https://github.com/swig/swig)) - A wrapper/interface Generator that let you link your c++ code to JavaScript, Perl, PHP, Python, Tcl and Ruby. [GPL/Output not licensed] [website](http://www.swig.org/)
* 2579⭐ 171🍴 [txiki.js](https://github.com/saghul/txiki.js)) - A tiny JavaScript runtime. [MIT]
* 1429⭐ 177🍴 [V7](https://github.com/cesanta/v7)) - An embedded JavaScript engine. [GPL2]
* 🌎 [V8](v8.dev) - A fast JavaScript engine by Google that can be embedded into any C++ application. [BSD]
* 912⭐ 122🍴 [v8pp](https://github.com/pmed/v8pp)) - Header-only library to expose C++ classes and functions into V8 to use them in JavaScript code. [BOOST] 🌎 [website](pmed.github.io/v8pp/)
* 9133⭐ 1198🍴 [ChakraCore](https://github.com/Microsoft/ChakraCore)) -A JavaScript engine by Microsoft that can be embedded into nodejs. [MIT]
## Serialization
* 1083⭐ 89🍴 [Bitsery](https://github.com/fraillt/bitsery)) - Header only C++ binary serialization library. [MIT]
* 2616⭐ 323🍴 [Bond](https://github.com/Microsoft/bond)) - An open source, cross-platform framework for working with schematized data. [MIT]
* 122⭐ 141🍴 [Boost.Serialization](https://github.com/boostorg/serialization)) - Boost Serialization Library. [Boost] 🌎 [website](boost.org/libs/serialization)
* 11763⭐ 928🍴 [Cap'n Proto](https://github.com/capnproto/capnproto)) - Fast data interchange format and capability-based RPC system. [MIT] 🌎 [website](capnproto.org/)
* 4245⭐ 767🍴 [cereal](https://github.com/USCiLab/cereal)) - A C++11 library for serialization. [BSD]
* 1843⭐ 121🍴 [cista](https://github.com/felixguendling/cista)) - A C++17 library for zero-copy high-performance (de-)serialization. [MIT]
* 621⭐ 110🍴 [cppcodec](https://github.com/tplgy/cppcodec)) - Header-only C++11 library to encode/decode base64, base32 and hex with consistent, flexible API. [MIT]
* 885⭐ 90🍴 [FastBinaryEncoding](https://github.com/chronoxor/FastBinaryEncoding)) - Fast Binary Encoding is ultra fast and universal serialization solution for C++, C#, Go, Java, JavaScript, Kotlin, Python, Ruby, Swift. [MIT]
* 23435⭐ 3254🍴 [FlatBuffers](https://github.com/google/flatbuffers)) - A Memory efficient serialization library. [Apache2]
* [Kaitai Struct](http://kaitai.io) - A declarative language to describe various binary data structures and a compiler to generate C++ parser code. [GPLv3+][MIT][Apache2]
* 1124⭐ 228🍴 [iguana](https://github.com/qicosmos/iguana)) - a modern, universal and easy-to-use serialization engine developed in C++20 and C++17. [Apache2]
* 3029⭐ 882🍴 [MessagePack](https://github.com/msgpack/msgpack-c)) - Efficient binary serialization format "like JSON" for C and C++. [Apache2] [website](http://msgpack.org/)
* ?⭐ ?🍴 [mrpt-serialization](https://github.com/mrpt/mrpt/)) - Versioned serialization to binary or text formats. [BSD] 🌎 [website](docs.mrpt.org/reference/latest/group_mrpt_serialization_grp.html)
* 4394⭐ 864🍴 [nanopb](https://github.com/nanopb/nanopb)) - Small code-size Protocol Buffers implementation in ANSI C. [Zlib]
* 65916⭐ 15523🍴 [protobuf](https://github.com/protocolbuffers/protobuf)) - Protocol Buffers - Google's data interchange format. [BSD]
* 2706⭐ 727🍴 [protobuf-c](https://github.com/protobuf-c/protobuf-c)) - Protocol Buffers implementation in C. [BSD]
* 157⭐ 15🍴 [Protocol Puffers](https://github.com/PragmaTwice/protopuf)) - A little, highly templated, and protobuf-compatible serialization/deserialization header-only library written in C++20. [Apache-2.0]
* 3132⭐ 523🍴 [SimpleBinaryEncoding](https://github.com/real-logic/simple-binary-encoding)) - encoding and decoding application messages in binary format for low-latency applications. [Apache2]
* 1503⭐ 263🍴 [upb](https://github.com/protocolbuffers/upb)) - A small protobuf implementation in C. [BSD]
* 272⭐ 57🍴 [Wirehair](https://github.com/catid/wirehair)) - O(N) Fountain Code for Large Data. [BSD-3-Clause]
* 733⭐ 98🍴 [YAS](https://github.com/niXman/yas)) - Very fast **Y**et **A**nother **S**erialization library supports the binary/text/json formats. [Boost]
* 752⭐ 59🍴 [zpp_bits](https://github.com/eyalz800/zpp_bits)) - Actually, the fastest modern **S**erialization library. Just check 🌎 [this video](www.youtube.com/watch?v=G7-GQhCw8eE&ab_channel=CppCon).
## Serial Port
* ?⭐ ?🍴 [Asio](https://github.com/chriskohlhoff/asio/)) - Asio includes classes for creating and manipulating serial ports in a portable manner. [Boost] [website](http://think-async.com/)
* 1256⭐ 418🍴 [Boost.Asio](https://github.com/boostorg/asio)) - Boost.Asio includes classes for creating and manipulating serial ports in a portable manner. [Boost] 🌎 [website](boost.org/libs/asio)
* 740⭐ 338🍴 [CSerialPort](https://github.com/itas109/CSerialPort)) - lightweight cross-platform serial port library. [LGPL3]
* 419⭐ 144🍴 [Libserial](https://github.com/crayzeewulf/libserial)) - Serial Port Programming in C++. [BSD-3-Clause]
* 2158⭐ 1046🍴 [Serial Communication Library](https://github.com/wjwwood/serial)) - Cross-platform, Serial Port library written in C++. [MIT] [website](http://wjwwood.io/serial/)
## Sorting
+ 624⭐ 58🍴 [cpp-sort](https://github.com/Morwenn/cpp-sort)) - Sorting algorithms & related tools for C++14. [MIT]
* 2380⭐ 102🍴 [pdqsort](https://github.com/orlp/pdqsort)) - Pattern-defeating quicksort. [zlib]
* 301⭐ 46🍴 [Timsort](https://github.com/gfx/cpp-TimSort)) - A templated stable sorting function which outperforms quicksort-based algorithms including std::sort, for reversed or semi-sorted data. [MIT]
* 19⭐ 2🍴 [Indiesort](https://github.com/mattreecebentley/plf_indiesort)) - A sort wrapper which enables the use of std::sort (& other random-access sort functions) with non-random-access containers, and also improves sort performance for large/non-trivially-copyable types in random-access containers and arrays. [zLib] 🌎 [website](plflib.org/indiesort.htm)
## Video
* [libvpx](http://www.webmproject.org/code/) - VP8/VP9 Codec SDK. [BSD]
* 🌎 [FFmpeg](www.ffmpeg.org/) - A complete, cross-platform solution to record, convert and stream audio and video. [LGPL2/GPL2]
* 460⭐ 81🍴 [avcpp](https://github.com/h4tr3d/avcpp)) - Modern C++ wrapper around FFmpeg. [MIT]
* 1722⭐ 458🍴 [libde265](https://github.com/strukturag/libde265)) - Open h.265 video codec implementation. [LGPL] [website](http://www.libde265.org/)
* 🌎 [x265](bitbucket.org/multicoreware/x265_git/src) - Open h.265 video codec implementation. [GPL2] 🌎 [website](x265.readthedocs.io/en/master/)
* 5587⭐ 1803🍴 [OpenH264](https://github.com/cisco/openh264)) - Open Source H.264 Codec. [BSD] [website](http://www.openh264.org/)
* [Theora](http://www.theora.org/) - A free and open video compression format. [BSD]
* ?⭐ ?🍴 [Vireo](https://github.com/twitter/vireo/)) - A lightweight and versatile video processing library by Twitter. [MIT]
## Virtual Machines
* 981⭐ 84🍴 [CarpVM](https://github.com/tekknolagi/carp)) - "interesting" VM in C. Let's see how this goes. [GPLv3]
* 19517⭐ 7816🍴 [MicroPython](https://github.com/micropython/micropython)) - Aims to put an implementation of Python 3.x on a microcontroller. [MIT]
* 3201⭐ 296🍴 [TinyVM](https://github.com/jakogut/tinyvm)) - A small, fast, lightweight virtual machine written in pure ANSI C. [MIT]
## Web Application Framework
* 2909⭐ 960🍴 [Civetweb](https://github.com/civetweb/civetweb)) - Provides easy to use, powerful, C/C++ embeddable web server with optional CGI, SSL and Lua support. [MIT]
* 8029⭐ 1656🍴 [C++ REST SDK](https://github.com/Microsoft/cpprestsdk)) - Microsoft project for cloud-based client-server communication in native code using a modern asynchronous C++ API design. [MIT]
* [CppCMS](http://cppcms.com/) - A Free High Performance Web Development Framework (not a CMS). [LGPLv3]
* 3332⭐ 367🍴 [Crow](https://github.com/CrowCpp/Crow)) - Crow is a C++ microframework for running web services. It uses routing similar to Python's Flask. [BSD] 🌎 [website](crowcpp.org)
* 919⭐ 117🍴 [Cutelyst](https://github.com/cutelyst/cutelyst)) - A C++ Web Framework built on top of Qt, using the simple approach of Catalyst (Perl) framework. [BSD-3-Clause] 🌎 [website](cutelyst.org/)
* 11661⭐ 1121🍴 [Drogon](https://github.com/an-tao/drogon)) - A C++14/17 based, high-performance HTTP application framework. [MIT]
* 889⭐ 132🍴 [C++ wfrest](https://github.com/wfrest/wfrest)) - C++ Web Framework REST API. [Apache2]
* 2172⭐ 141🍴 [facil.io](https://github.com/boazsegev/facil.io)) - Evented, high performance C web framework supporting HTTP, WebSockets, SSE and more. [MIT] [website](http://facil.io)
* 🌎 [Kore](kore.io/) - ultra fast and flexible web server / framework for web applications developed in C. [ISC]
* [libOnion](http://www.coralbits.com/libonion/) - lightweight library to help you create webservers in C programming language. [LGPLv3]
* 5945⭐ 548🍴 [lwan](https://github.com/lpereira/lwan)) - Experimental, scalable, high performance HTTP server. [GPL2]
* 7939⭐ 1306🍴 [oat++](https://github.com/oatpp/oatpp)) - Light, zero-dependency framework to create high-performance web-services. [Apache-2.0] 🌎 [website](oatpp.io/)
* 🌎 [Pistache](pistacheio.github.io/pistache/) - Pistache is a C++ REST framework written in pure C++11 with no external dependency. [Apache2]
* ?⭐ ?🍴 [QDjango](https://github.com/jlaine/qdjango/)) - A web framework written in C++ and built on top of the Qt library. Where possible it tries to follow django's API, hence its name. [LGPL]
* 1294⭐ 220🍴 [TreeFrog Framework](https://github.com/treefrogframework/treefrog-framework)) - High-speed and full-stack web application framework based on C++ and Qt, which supports HTTP and WebSocket protocol (with O/R mapping). [BSD] [website](http://www.treefrogframework.org/)
* 2463⭐ 290🍴 [userver](https://github.com/userver-framework/userver)) - Asynchronous C++17 framework with a rich set of abstractions and database drivers for fast and comfortable creation of efficient microservices, services and utilities. [Apache-2.0] 🌎 [website](userver.tech/)
* [Wt](http://www.webtoolkit.eu/wt) - A C++ library for developing web applications. [GPL/Proprietary]
## XML
*XML is crap. Really. There are no excuses. XML is nasty to parse for humans, and it's a disaster to parse even for computers. There's just no reason for that horrible crap to exist. - Linus Torvalds*
* 55⭐ 93🍴 [Boost.PropertyTree](https://github.com/boostorg/property_tree)) - A property tree parser/generator that can be used to parse XML/JSON/INI/Info files. [Boost] 🌎 [website](boost.org/libs/property_tree)
* [Expat](http://www.libexpat.org/) - An XML parser library written in C. [MIT]
* [Libxml2](http://xmlsoft.org/) - The XML C parser and toolkit of Gnome. [MIT]
* [libxml++](http://libxmlplusplus.sourceforge.net/) - An XML Parser for C++. [LGPL2]
* 451⭐ 164🍴 [Mini-XML](https://github.com/michaelrsweet/mxml)) - A small XML parsing library written in ANSI C. [LGPL2 with exceptions]
* [PugiXML](http://pugixml.org/) - A light-weight, simple and fast XML parser for C++ with XPath support. [MIT]
* [RapidXml](http://rapidxml.sourceforge.net/) - An attempt to create the fastest XML parser possible, while retaining useability, portability and reasonable W3C compatibility. [Boost]
* [TinyXML](http://sourceforge.net/projects/tinyxml/) - A simple, small, minimal, C++ XML parser that can be easily integrating into other programs. [zlib]
* 5122⭐ 1840🍴 [TinyXML2](https://github.com/leethomason/tinyxml2)) - A simple, small, efficient, C++ XML parser that can be easily integrating into other programs. [zlib]
* 92⭐ 34🍴 [TinyXML++](https://github.com/rjpcomputing/ticpp)) - A completely new interface to TinyXML that uses MANY of the C++ strengths. Templates, exceptions, and much better error handling. [MIT]
* 29⭐ 32🍴 [Xalan C](https://github.com/apache/xalan-c)) - A library and a command line program to transform XML documents using a stylesheet that conforms to XSLT 1.0 standards. [Apache-2.0] 🌎 [website](xalan.apache.org/)
* [Xerces-C++](http://xerces.apache.org/xerces-c/) - A validating XML parser written in a portable subset of C++. [Apache2]
## Yaml
* 222⭐ 42🍴 [mini-yaml](https://github.com/jimmiebergmann/mini-yaml)) - Single header YAML 1.0 C++11 serializer/deserializer. [MIT]
* 5190⭐ 1874🍴 [yaml-cpp](https://github.com/jbeder/yaml-cpp)) - A YAML parser and emitter in C++. [MIT]
* 588⭐ 103🍴 [rapidyaml](https://github.com/biojppm/rapidyaml)) - Rapid YAML is a C++ library to parse and emit YAML. [MIT]
## Miscellaneous
*Useful libraries or tools that don't fit in the categories above or maybe just not categorised yet*
* 74⭐ 9🍴 [access_profiler](https://github.com/arvidn/access_profiler)) - A tool to count accesses to member variables in c++ programs. [GPL3]
* [American fuzzy lop](http://lcamtuf.coredump.cx/afl/) a.k.a. afl-fuzz - Crazy fuzzing tool that automatically discovers bugs given time and minimal example input. [Apache2]
* 4827⭐ 411🍴 [Argon2](https://github.com/P-H-C/phc-winner-argon2)) - The password hash Argon2, winner of PHC. [CC0/Apache2]
* [Better String](http://bstring.sourceforge.net) - An alternative to the string library for C which is more functional and does not have buffer overflow overrun problems. Also includes a C++ wrapper. [BSD, GPL2]
* 78⭐ 55🍴 [Boost.Signals2](https://github.com/boostorg/signals2)) - An implementation of a managed signals and slots system. [Boost] 🌎 [website](boost.org/libs/signals2)
* 🌎 [casacore](code.google.com/p/casacore/) - A set of c++ core libraries derived from aips++. [LGPL]
* 597⭐ 166🍴 [CCTZ](https://github.com/google/cctz)) - a C++ library for translating between absolute and civil times using the rules of a time zone. [Apache-2.0]
* 🌎 [Cheat Sheets of HackingCPP](hackingcpp.com/cpp/cheat_sheets.html) - Cool cheat sheets and infographics for algorithms, views, containers, randomness, etc.
* 523⭐ 30🍴 [Concord](https://github.com/Cogmasters/concord)) - A Discord API wrapper library written in C. [MIT] 🌎 [website](cogmasters.github.io/concord)
* 1368⭐ 117🍴 [CPPItertools](https://github.com/ryanhaining/cppitertools)) - Range-based for loop add-ons inspired by the Python builtins and itertools library. [BSD-2-Clause]
* 340⭐ 14🍴 [cpp-lazy](https://github.com/MarcDirven/cpp-lazy)) - a fast and easy lazy evaluation library for C++11/14/17/20. [MIT]
* 338⭐ 91🍴 [CRCpp](https://github.com/d-bahr/CRCpp)) - Easy to use and fast C++ CRC library. [BSD-3-Clause]
* 561⭐ 73🍴 [cxx-prettyprint](https://github.com/louisdx/cxx-prettyprint)) - A pretty printing library for C++ containers. [Boost]
* 3173⭐ 685🍴 [date](https://github.com/HowardHinnant/date)) - A date and time library based on the C++11/14/17 header. [MIT] 🌎 [website](howardhinnant.github.io/date/date.html)
* 1084⭐ 166🍴 [D++ (DPP)](https://github.com/brainboxdotcc/DPP)) - A lightweight, high performance and scalable C++ library for creating Discord Bots. [Apache2] 🌎 [website](dpp.dev)
* 673⭐ 45🍴 [DynaMix](https://github.com/iboB/dynamix)) - A library which allows you to compose and modify objects at run time. [MIT]
* 133⭐ 4🍴 [emio](https://github.com/Viatorus/emio)) - A safe and fast high-level and low-level character input/output library. [MIT]
* 324⭐ 158🍴 [faker-cxx](https://github.com/cieslarmichal/faker-cxx)) - C++20 Faker library for generating fake (but realistic) data for testing and development. [MIT]
* 1627⭐ 142🍴 [fast_float](https://github.com/fastfloat/fast_float)) - Fast, Exact C++ from_chars, 4x to 10x faster than strtod, part of GCC 12, Chromium, Redis, Webkit/Safari. [Apache2/BSL-1.0/MIT]
* [FastFormat](http://www.fastformat.org) - Fast, Safe C++ Formatting inspired by log4j and Pantheios. [Simplified BSD]
* 673⭐ 55🍴 [fast_io](https://github.com/cppfastio/fast_io)) - Significantly faster input/output for C++20. [MIT]
* 362⭐ 19🍴 [fccf](https://github.com/p-ranav/fccf)) - A command-line tool that recursively searches a directory to find C/C++ source code matching a search string. [MIT]
* 20895⭐ 2517🍴 [{fmt}](https://github.com/fmtlib/fmt)) :zap: - Small, safe and fast formatting library for C++. [Simplified BSD] 🌎 [website](fmt.dev)
* 189⭐ 18🍴 [gcc-poison](https://github.com/leafsr/gcc-poison)) - A simple header file for developers to ban unsafe C/C++ functions from applications.
* 322⭐ 70🍴 [happly](https://github.com/nmwsharp/happly)) - A C++ header-only parser for the PLY file format. Parse .ply happily! [MIT]
* 787⭐ 53🍴 [hedley](https://github.com/nemequ/hedley)) - A C/C++ header file designed to smooth over some platform-specific annoyances. 🌎 [website](nemequ.github.io/hedley/)
* 1548⭐ 188🍴 [HighwayHash](https://github.com/google/highwayhash)) - Fast strong hash functions: SipHash/HighwayHash. [Apache-2.0]
* 584⭐ 29🍴 [icecream-cpp](https://github.com/renatoGarcia/icecream-cpp)) - A small printing library for debugging purposes. [MIT]
* 1682⭐ 207🍴 [inja](https://github.com/pantor/inja)) - A Template Engine for Modern C++. [MIT]
* 502⭐ 85🍴 [Jinja2С++](https://github.com/jinja2cpp/Jinja2Cpp)) - almost full-conformance template engine implementation. 🌎 [website](jinja2cpp.github.io/)
* 918⭐ 243🍴 [jwt-cpp](https://github.com/Thalhammer/jwt-cpp)) - A header only library for creating and validating JSON web tokens in C++. [MIT]
* 502⭐ 40🍴 [Kangaru](https://github.com/gracicot/kangaru)) - A dependency injection container for C++11 and C++14. [MIT]
* 4218⭐ 559🍴 [Klib](https://github.com/attractivechaos/klib)) - Small and lightweight implementations of common algorithms and data structures. [MIT]
* 461⭐ 108🍴 [libcpuid](https://github.com/anrieff/libcpuid)) - A small C library for x86 CPU detection and feature extraction. [BSD]
* 130⭐ 8🍴 [libenvpp](https://github.com/ph3at/libenvpp)) - A modern C++ library for type-safe environment variable parsing. [Apache-2.0]
* 29⭐ 14🍴 [libevil](https://github.com/avati/libevil)) - The Evil License Manager. [GPLv3]
* 89⭐ 28🍴 [libnih](https://github.com/keybuk/libnih)) - A lightweight library of C functions and structures. [GPL2.1]
* 389⭐ 70🍴 [libsigc++](https://github.com/libsigcplusplus/libsigcplusplus)) - A typesafe callback system for standard C++. [LGPL] 🌎 [website](libsigcplusplus.github.io/libsigcplusplus)
* 🌎 [libusb](libusb.info/) - A universal USB library which allows for portable access to USB devices. [LGPL2]
* 1284⭐ 78🍴 [Mach7](https://github.com/solodon4/Mach7)) - A Pattern-matching library for C++. [BSD]
* 1717⭐ 158🍴 [mio](https://github.com/mandreyel/mio)) - Cross-platform C++11 header-only library for memory mapped file IO. [MIT]
* 180⭐ 9🍴 [MPH](https://github.com/qlibs/mph)) - C++20 [Minimal] Static Perfect Hash library. [MIT]
* 1953⭐ 230🍴 [PEGTL](https://github.com/taocpp/PEGTL)) - The Parsing Expression Grammar Template Library. [MIT]
* 806⭐ 79🍴 [Pipes](https://github.com/joboccara/pipes)) - Pipelines for expressive code on collections in C++. [MIT]
* 912⭐ 75🍴 [pprint](https://github.com/p-ranav/pprint)) - Pretty Printer for Modern C++. [MIT]
* 885⭐ 148🍴 [pspsdk](https://github.com/pspdev/pspsdk)) - An open-source SDK for PSP homebrew development. [BSD/GNU GPL3]
* 64⭐ 11🍴 [QtVerbalExpressions](https://github.com/VerbalExpressions/QtVerbalExpressions)) - This Qt lib is based off of the C++ VerbalExpressions library. [MIT]
* 248⭐ 39🍴 [RapidFuzz](https://github.com/rapidfuzz/rapidfuzz-cpp)) - Rapid fuzzy string matching in C++ using the Levenshtein Distance. [MIT] 🌎 [website](rapidfuzz.github.io/rapidfuzz-cpp/)
* 223⭐ 14🍴 [rapidhash](https://github.com/Nicoshev/rapidhash)) - Very fast, high quality, platform-independent hashing algorithm. [BSD-2-Clause]
* [Remote Call Framework](http://www.deltavsoft.com/) - Inter-process communication framework for C++. [GPL2/Proprietary]
* 561⭐ 68🍴 [reproc](https://github.com/DaanDeMeyer/reproc)) - A cross-platform (C99/C++11) process library. [MIT]
* 1093⭐ 49🍴 [scnlib](https://github.com/eliaskosunen/scnlib)) - scanf for modern C++. [Apache-2.0] 🌎 [website](v1.scnlib.dev/)
* [Scintilla](http://scintilla.org/) - A free source code editing component. [MIT]
* 4952⭐ 483🍴 [SDS](https://github.com/antirez/sds)) - Simple Dynamic Strings library for C. [BSD]
* 185⭐ 34🍴 [semver.c](https://github.com/h2non/semver.c)) - A semver parser and render in ANSI C. [MIT]
* [sigslot](http://sigslot.sourceforge.net/) - C++ Signal/Slot Library. [PublicDomain]
* 165⭐ 41🍴 [SimpleSignal](https://github.com/larspensjo/SimpleSignal)) - High performance C++11 signals. [PublicDomain]
* 404⭐ 175🍴 [Stage](https://github.com/rtv/Stage)) - Mobile robot simulator. [GPL2]
* 27126⭐ 7720🍴 [stb](https://github.com/nothings/stb)) :zap: - A range of single-file libraries for C/C++. [PublicDomain]
* 941⭐ 51🍴 [stdman](https://github.com/jeaye/stdman)) - A tool that parses archived HTML files from 🌎 [cppreference](cppreference.com) and generates groff-formatted manual pages for Unix-based systems. [MIT]
* 2269⭐ 79🍴 [StringZilla](https://github.com/ashvardanian/StringZilla)) - the Godzilla of string libraries, splitting, sorting, and shuffling large textual datasets faster than you can say "Tokyo Tower". [Apache-2.0]
* 🌎 [StrTk](www.partow.net/programming/strtk/index.html) - A C++ library consisting of high performance string processing routines. [MIT]
* 11⭐ 0🍴 [tgbotxx](https://github.com/baderouaich/tgbotxx)) - Telegram Bot C++ Library. [MIT]
* 🌎 [Tulip Indicators](tulipindicators.org) - A C library of over 100 financial technical analysis indicators. [LGPL]
* 176⭐ 18🍴 [ub-canaries](https://github.com/regehr/ub-canaries)) - A collection of C/C++ programs that try to get compilers to exploit undefined behavior.
* 406⭐ 21🍴 [value-category-cheatsheet](https://github.com/jeaye/value-category-cheatsheet)) A PDF cheatsheet for lvalues, rvalues, and the like. [Jank copyleft]
* 16⭐ 9🍴 [VarTypes](https://github.com/szi/vartypes)) - A feature-rich, object-oriented framework for managing variables in C++ / Qt4. [LGPL]
* ?⭐ ?🍴 [Wildcards](https://github.com/zemasoft/wildcards/)) - A simple C++ header-only template library implementing matching using wildcards. [BSL-1.0]
* [ZBar](http://zbar.sourceforge.net/) - A barcode scanner library, which allows to scan photos/images/video streams for barcodes and return their value. [LGPL2]
* ?⭐ ?🍴 [ZXing](https://github.com/zxing/zxing/)) - An open-source, multi-format 1D/2D barcode image processing library implemented in Java, with ports to other languages. [Apache]
# Software
*Software for creating a development environment.*
## Compiler
*List of C or C++ compilers*
* 6162⭐ 746🍴 [8cc](https://github.com/rui314/8cc)) - A Small C Compiler.
* 2104⭐ 177🍴 [c](https://github.com/ryanmjacobs/c)) - Compile and execute C "scripts" in one go! [MIT]
* [Clang](http://clang.llvm.org/) - A C compiler for LLVM. Supports C++11/14/1z C11. Developed by LLVM Team. [NCSA]
* 🌎 [GCC](gcc.gnu.org/) - GNU Compiler Collection. Supports C++11/14/1z C11 and OpenMP. [GNU GPL3]
* [PCC](http://pcc.ludd.ltu.se/) - A very old C compiler. Supports C99.
* 🌎 [Intel C++ Compiler](software.intel.com/en-us/c-compilers) - Developed by Intel.
* [LLVM](http://llvm.org/) - Collection of modular and reusable compiler and toolchain technologies.
* 🌎 [Microsoft Visual C++](docs.microsoft.com/en-us/cpp/dotnet/dotnet-programming-with-cpp-cli-visual-cpp?view=msvc-160) - MSVC, developed by Microsoft.
* [Open WatCom](https://github.com/open-watcom) - Watcom C, C++, and Fortran cross compilers and tools. [Sybase Open Watcom Public License]
* [Oracle Solaris Studio](http://www.oracle.com/technetwork/server-storage/solarisstudio/overview/index.html) - C, C++ and Fortran compiler for SPARC and x86. Supports C++11. Available on Linux and Solaris. [OTN Developer License]
* [TCC](http://bellard.org/tcc/) - Tiny C Compiler. [LGPL]
## Online Compiler
*List of online C or C++ compilers*
* 🌎 [codechef](www.codechef.com/ide) - A simple online compiler CodeChef.
* [codepad](http://codepad.org/) - An online compiler/interpreter, and a simple collaboration tool.
* [coliru](http://coliru.stacked-crooked.com/) - Online compiler/shell with support for various C++ compilers.
* [Compiler Explorer](http://gcc.godbolt.org/) - An interactive compiler with assembly output available.
* [CompileOnline](http://www.tutorialspoint.com/codingground.htm) - Compile and Execute C++ online on Linux.
* [Ideone](http://ideone.com/) - An online compiler and debugging tool which allows you to compile source code and execute it online in more than 60 programming languages.
* 🌎 [Programiz](www.programiz.com/cpp-programming/online-compiler) - An online compiler for learners and developers.
* 🌎 [repl.it](repl.it) - A powerful yet simple tools and platforms for educators, learners, and developers.
* [Rextester](http://rextester.com/runcode) - Online compiler which provides several compilers(Clang, GCC, MSVC) and several editors.
* 🌎 [Try It Online](tio.run/) - TIO is a family of online interpreters for an evergrowing list of practical and recreational programming languages.
* 🌎 [Wandbox](wandbox.org) - An online Clang/GCC compiler with Boost available.
* 🌎 [paiza.io](paiza.io/en) - An online C/C++ compiler with multiple files supporting feature, GitHub(gist) integration and collaborative editing.
* 🌎 [InterviewBit](www.interviewbit.com/online-cpp-compiler/) - A simple and easy to use online C++ compiler.
## Debugger
*List of C or C++ debuggers*
* 🌎 [Comparison of debuggers](en.wikipedia.org/wiki/Comparison_of_debuggers) - A list of Debuggers from Wikipedia.
* 🌎 [GDB](www.gnu.org/software/gdb/) - GNU Debugger.
* [LLDB](http://lldb.llvm.org/) - The LLDB Debugger.
* 🌎 [Metashell](metashell.readthedocs.org) - An interactive template metaprogramming shell which includes the MDB metadebugger.
* [Valgrind](http://valgrind.org/) - A tool for memory debugging, memory leak detection, and profiling.
* [x64dbg](http://x64dbg.com/) - An open-source x64/x32 debugger for windows.
## Integrated Development Environment
*List of C or C++ nominal IDEs.*
* 🌎 [Anjuta DevStudio](sourceforge.net/projects/anjuta/) - The GNOME IDE. [GPL3]
* [AppCode](http://www.jetbrains.com/objc/) - an IDE for Objective-C, C, C++, and JavaScript development built on JetBrains’ IntelliJ IDEA platform.
* 🌎 [Cevelop](www.cevelop.com) - Cross-platform C and C++ IDE based on Eclipse CDT with additional plug-ins.
* [CLion](http://www.jetbrains.com/clion/) - Cross-platform C and C++ IDE from JetBrains.
* [Code::Blocks](http://www.codeblocks.org/) - A free C, C++ and Fortran IDE.
* [CodeLite](http://codelite.org/) - Another cross-platform, free C and C++ IDE. [GPL2 with an exception for plugins]
* 870⭐ 53🍴 [color_coded](https://github.com/jeaye/color_coded)) - A vim plugin for libclang-based highlighting. [MIT]
* [Dev-C++](http://sourceforge.net/projects/orwelldevcpp/) - A portable C/C++/C++11 IDE.
* [Eclipse CDT](http://www.eclipse.org/cdt/) - A fully functional C and C++ IDE based on the Eclipse platform.
* 2614⭐ 280🍴 [Embarcadero Dev-CPP](https://github.com/Embarcadero/Dev-Cpp)) - A fork of Dev-C++ that comes preinstalled with new themes and modern compilers. [GPLv2] 🌎 [website](www.embarcadero.com/free-tools/dev-cpp)
* [Geany](http://www.geany.org/) - Small, fast, cross-platform IDE. [GPL]
* [IBM VisualAge](http://www-03.ibm.com/software/products/en/visgen) - A family of computer integrated development environments from IBM.
* 912⭐ 99🍴 [Irony-mode](https://github.com/Sarcasm/irony-mode)) - A C/C++ minor mode for Emacs powered by libclang.
* 🌎 [juCi++](gitlab.com/cppit/jucipp) - Cross-platform, lightweight C++ IDE with libclang integration. [MIT]
* 🌎 [KDevelop](www.kdevelop.org/) - A free, open source IDE.
* 🌎 [Microsoft Visual Studio](www.visualstudio.com/) - An IDE from Microsoft.
* 164958⭐ 29532🍴 [Microsoft Visual Studio Code](https://github.com/microsoft/vscode)) :zap: - An open-source IDE from Microsoft. [MIT] 🌎 [website](code.visualstudio.com)
* 🌎 [NetBeans](netbeans.org/) - An IDE for developing primarily with Java, but also with other languages, in particular PHP, C/C++, and HTML5.
* 2635⭐ 821🍴 [Qt Creator](https://github.com/qt-creator/qt-creator)) :zap: - A cross-platform C++, JavaScript and QML IDE which is part of the SDK for Qt. [GPL3 with exceptions] 🌎 [website](www.qt.io/product/development-tools)
* 1828⭐ 254🍴 [rtags](https://github.com/Andersbakken/rtags)) - A c/c++ client/server indexer with for integration with emacs based on clang.
* 🌎 [Xcode](developer.apple.com/xcode/) - Developed by Apple.
* 25483⭐ 2809🍴 [YouCompleteMe](https://github.com/ycm-core/YouCompleteMe)) - YouCompleteMe is a fast, as-you-type, fuzzy-search code completion engine for Vim.
* ?⭐ ?🍴 [cquery](https://github.com/cquery-project/cquery/)) - A C++ code completion engine for vscode, emacs, vim, etc.
* 🌎 [C Playground - Online C Programming IDE](programiz.pro/ide/c) - An online IDE to practice C Programming where you can write, edit, and run code online.
## Build Systems
* 🌎 [Bazel](bazel.build) - A multi-language, fast and scalable build system from Google. [Apache]
* 5045⭐ 324🍴 [Bear](https://github.com/rizsotto/Bear)) - A tool to generate compilation database for clang tooling. [GPLv3]
* 8561⭐ 1160🍴 [Buck](https://github.com/facebook/buck)) - A fast build system that encourages the creation of small, reusable modules over a variety of platforms and languages including C++ developed and used at Facebook. Written in Java. [Apache]
* 🌎 [build2](build2.org/) - cross-platform build, packaging and dependency management toolchain for developing and packaging C/C++ projects. [MIT]
* 🌎 [Ccache](ccache.dev/) - A fast C/C++ compiler cache. [GPLv3]
* 4878⭐ 245🍴 [clib](https://github.com/clibs/clib)) - Package manager for the C programming language. [MIT]
* 🌎 [CMake](cmake.org/) - Cross-platform free and open-source software for managing the build process of software using a compiler-independent method. [BSD]
* 454⭐ 27🍴 [Cget](https://github.com/pfultz2/cget)) - Cmake package retrieval. [Boost] [website](http://cget.readthedocs.io)
* 🌎 [Conan](conan.io/) - C/C++ Package Manager, open sourced. [MIT]
* 747⭐ 80🍴 [CPM](https://github.com/iauns/cpm)) - A C++ Package Manager based on CMake and Git.
* [FASTBuild](http://www.fastbuild.org/docs/home.html) - High performance, open-source build system supporting highly scalable compilation, caching and network distribution.
* 🌎 [Hunter](www.github.com/ruslo/hunter) - CMake driven cross-platform package manager for C++. [BSD-2]
* [MesonBuild](http://mesonbuild.com) - An open source build system meant to be both extremely fast, and, even more importantly, as user friendly as possible.
* 🌎 [Ninja](ninja-build.org/) - A small build system with a focus on speed.
* 5875⭐ 552🍴 [Sccache](https://github.com/mozilla/sccache)) - A fast compiler cache for C/C++, with cross-platform support and cloud backed storage options.
* [Scons](http://www.scons.org/) - A software construction tool configured with a Python script.
* [Sconsolidator](http://www.sconsolidator.com/) - Scons build system integration for Eclipse CDT.
* 🌎 [Spack](spack.io/) - A flexible package manager that supports multiple versions, configurations, platforms, and compilers. [Apache-2.0/MIT]
* 🌎 [SW](software-network.org/) - Cross-platform C++ (and other langs) Build System and Package Manager with a lot of packages available. [GPLv3]
* 438⭐ 76🍴 [tundra](https://github.com/deplinenoise/tundra)) - High-performance code build system designed to give the best possible incremental build times even for very large software projects.
* [tup](http://gittup.org/tup/) - File-based build system that monitors in the background for changed files.
* [Premake](http://premake.github.io) - A tool configured with a Lua script to generate project files for Visual Studio, GNU Make, Xcode, Code::Blocks, and more across Windows, Mac OS X, and Linux.
* 23408⭐ 6469🍴 [Vcpkg](https://github.com/microsoft/vcpkg)) - C++ library manager for Windows, Linux, and MacOS. [MIT]
* 🌎 [waf](gitlab.com/ita1024/waf) - Python-based framework for configuring, compiling and installing applications. [BSD] 🌎 [website](waf.io/)
* 🌎 [XMake](xmake.io/) - A C/C++ cross-platform build utility based on Lua. [Apache]
## Static Code Analysis
*List of tools for improving quality and reducing defects by code analysis*
* [Cppcheck](http://cppcheck.sourceforge.net/) - A tool for static C/C++ code analysis. - 5861⭐ 1458🍴 [source](https://github.com/danmar/cppcheck))
* 🌎 [CppDepend](www.cppdepend.com/) - Simplifies managing a complex C/C++ code base by analyzing and visualizing code dependencies, by defining design rules, by doing impact analysis, and comparing different versions of the code.
* 1595⭐ 277🍴 [cpplint](https://github.com/cpplint/cpplint)) - A C++ style checker following Google's C++ style guide.
* [PVS-Studio](http://www.viva64.com/en/pvs-studio/) - A tool for bug detection in the source code of programs, written in C, C++ and C#.
* 747⭐ 85🍴 [cpp-dependencies](https://github.com/tomtom-international/cpp-dependencies)) - Tool to check C++ #include dependencies (dependency graphs created in .dot format). [Apache]
* 4135⭐ 391🍴 [include-what-you-use](https://github.com/include-what-you-use/include-what-you-use)) - A tool for use with clang to analyze includes in C and C++ source files. 🌎 [website](include-what-you-use.org/)
* 15007⭐ 2017🍴 [Infer](https://github.com/facebook/infer)) - A static analyzer for Java, C and Objective-C. [BSD]
* [OCLint](http://oclint.org/) - A static source code analysis tool to improve quality and reduce defects for C, C++ and Objective-C. - 3779⭐ 494🍴 [source](https://github.com/oclint/oclint))
* [Clang Static Analyzer](http://clang-analyzer.llvm.org/index.html) - A source code analysis tool that finds bugs in C, C++, and Objective-C programs.
* [Linticator](http://linticator.com) - Eclipse CDT integration of Pc-/FlexeLint.
* 2653⭐ 186🍴 [IKOS](https://github.com/NASA-SW-VnV/ikos)) - Static analyzer for C/C++ based on the theory of Abstract Interpretation. [NOSA 1.3]
* 🌎 [List of tools for static code analysis](en.wikipedia.org/wiki/List_of_tools_for_static_code_analysis#C.2FC.2B.2B) - A list of tools for static code analysis from Wikipedia.
* 132⭐ 13🍴 [OptView2](https://github.com/OfekShilon/optview2)) - Inspect missed Clang optimizations.
* 🌎 [Trunk](trunk.io) - Toolkit to check, test, merge, and monitor code.
## Coding Style Tools
* [Artistic Style](http://astyle.sourceforge.net/) - A tool to format C/C++/C#/Obj-C/Java code. Also known as astyle.
* [ClangFormat](http://clang.llvm.org/docs/ClangFormat.html) - A tool to format C/C++/Obj-C code.
* [Clang-Tidy](http://clang.llvm.org/extra/clang-tidy.html) - Clang-based C++ linter tool.
* 🌎 [EditorConfig](editorconfig.org/) - EditorConfig helps maintain consistent coding styles across different editors and IDEs.
* 2873⭐ 570🍴 [Uncrustify](https://github.com/uncrustify/uncrustify)) - Code beautifier.
# Resources
*Various resources, such as books, websites, and articles for improving your C++ development skills and knowledge.*
## API Design
* [Beautiful Native Libraries](http://lucumr.pocoo.org/2013/8/18/beautiful-native-libraries/)
* 🌎 [Designing Qt-Style C++ APIs](doc.qt.io/archives/qq/qq13-apis.html)
## Articles
*Fantastic C++ related articles.*
* 290⭐ 36🍴 [CppCon 2023 Presentation Materials](https://github.com/CppCon/CppCon2023)) - CppCon 2023 Presentation Materials.
* 528⭐ 55🍴 [CppCon 2022 Presentation Materials](https://github.com/CppCon/CppCon2022)) - CppCon 2022 Presentation Materials.
* 97⭐ 14🍴 [CppCon 2021 Presentation Materials](https://github.com/CppCon/CppCon2021)) - CppCon 2021 Presentation Materials.
* 1628⭐ 210🍴 [CppCon 2020 Presentation Materials](https://github.com/CppCon/CppCon2020)) - CppCon 2020 Presentation Materials.
* 1241⭐ 160🍴 [CppCon 2019 Presentation Materials](https://github.com/CppCon/CppCon2019)) - CppCon 2019 Presentation Materials.
* 1426⭐ 176🍴 [CppCon 2018 Presentation Materials](https://github.com/CppCon/CppCon2018)) - CppCon 2018 Presentation Materials.
* 1788⭐ 243🍴 [CppCon 2017 Presentation Materials](https://github.com/CppCon/CppCon2017)) - CppCon 2017 Presentation Materials.
* 1807⭐ 247🍴 [CppCon 2016 Presentation Materials](https://github.com/CppCon/CppCon2016)) - CppCon 2016 Presentation Materials.
* 1781⭐ 317🍴 [CppCon 2015 Presentation Materials](https://github.com/CppCon/CppCon2015)) - CppCon 2015 Presentation Materials.
* 2273⭐ 393🍴 [CppCon 2014 Presentation Materials](https://github.com/CppCon/CppCon2014)) - CppCon 2014 Presentation Materials.
* 83⭐ 5🍴 [C++Now 2023 Presentations](https://github.com/boostcon/cppnow_presentations_2023)) - Presentation materials presented at C++Now 2023.
* 1⭐ 0🍴 [C++Now 2022 Presentations](https://github.com/boostcon/cppnow_presentations_2022)) - Presentation materials presented at C++Now 2022.
* 4⭐ 1🍴 [C++Now 2021 Presentations](https://github.com/boostcon/cppnow_presentations_2021)) - Presentation materials presented at C++Now 2021.
* 90⭐ 16🍴 [C++Now 2019 Presentations](https://github.com/boostcon/cppnow_presentations_2019)) - Presentation materials presented at C++Now 2019.
* 126⭐ 61🍴 [C++Now 2018 Presentations](https://github.com/boostcon/cppnow_presentations_2018)) - Presentation materials presented at C++Now 2018.
* 490⭐ 68🍴 [C++Now 2017 Presentations](https://github.com/boostcon/cppnow_presentations_2017)) - Presentation materials presented at C++Now 2017.
* 83⭐ 16🍴 [C++Now 2016 Presentations](https://github.com/boostcon/cppnow_presentations_2016)) - Presentation materials presented at C++Now 2016.
* 202⭐ 21🍴 [C++Now 2015 Presentations](https://github.com/boostcon/cppnow_presentations_2015)) - Presentation materials presented at C++Now 2015.
* 433⭐ 73🍴 [C++Now 2014 Presentations](https://github.com/boostcon/cppnow_presentations_2014)) - Presentation materials presented at C++Now 2014.
* 190⭐ 14🍴 [C++Now 2013 Presentations](https://github.com/boostcon/cppnow_presentations_2013)) - Presentation materials presented at C++Now 2013.
* 172⭐ 24🍴 [C++Now 2012 Presentations](https://github.com/boostcon/cppnow_presentations_2012)) - Presentation materials presented at C++Now 2012.
## Books
*Fantastic C or C++ related books.*
* [List of Free C or C++ Books](https://github.com/correia-jpv/fucking-awesome-cpp/blob/master/books.md)
* 340802⭐ 61892🍴 [Free C Books](https://github.com/EbookFoundation/free-programming-books/blob/main/books/free-programming-books-langs.md#c)) - vhf/free-programming-books/C.
* 340802⭐ 61892🍴 [Free C++ Books](https://github.com/EbookFoundation/free-programming-books/blob/main/books/free-programming-books-langs.md#cpp)) - vhf/free-programming-books/C++.
* 8180⭐ 889🍴 [cppbestpractices](https://github.com/lefticus/cppbestpractices)) - Collaborative Collection of C++ Best Practices.
## Coding Standards
* 🌎 [Cert C++](resources.sei.cmu.edu/downloads/secure-coding/assets/sei-cert-cpp-coding-standard-2016-v01.pdf)
* 🌎 [Misra C++ 2008](www.cppdepend.com/misra-cpp)
* 🌎 [Autosar C++ 2014](www.autosar.org/fileadmin/standards/adaptive/21-11/AUTOSAR_RS_CPP14Guidelines.pdf)
## Coding Style
* 42940⭐ 5438🍴 [C++ Core Guidelines](https://github.com/isocpp/CppCoreGuidelines)) - "Official" set of C++ guidelines, reviewed by the author of C++.
* [C++ Dos and Don'ts](http://www.chromium.org/developers/coding-style/cpp-dos-and-donts) - The Chromium Projects > For Developers > Coding Style > C++ Dos and Don'ts.
* 37574⭐ 13304🍴 [google-styleguide](https://github.com/google/styleguide)) - Style guides for Google-originated open-source projects.
* 🌎 [Google C++ Style Guide](google.github.io/styleguide/cppguide.html)
* [GNU Coding Standard](http://www.gnu.org/prep/standards/standards.html)
* 🌎 [Linux kernel coding style](www.kernel.org/doc/Documentation/process/coding-style.rst)
* [LLVM Coding Standards](http://llvm.org/docs/CodingStandards.html)
## Podcasts
* [CppCast](http://cppcast.com) - The first podcast by C++ developers for C++ developers.
* [CppChat](http://cpp.chat) - A (sometimes) weekly look at what's going on in the world of C++ chatting with a guest from the community.
## Talks
* 9⭐ 1🍴 [C++ Conferences](https://github.com/eoan-ermine/cpp-conferences)) - Catalog of C++ conferences
* 🌎 [CppCon Talks](www.youtube.com/user/CppCon/videos) :zap: - The C++ conference.
* 87⭐ 17🍴 [Quick game development with C++11/C++14](https://github.com/SuperV1234/cppcon2014)) - CppCon 2014 talk by Vittorio Romeo.
* 10⭐ 0🍴 [Presentation on Hana for C++Now 2015](https://github.com/ldionne/hana-cppnow-2015))
* 🌎 [Meeting Cpp](www.youtube.com/user/MeetingCPP/videos) - Meeting C++ YouTube Channel
## Videos
*Fantastic C or C++ related videos.*
* [List of C or C++ YouTube Videos](https://github.com/correia-jpv/fucking-awesome-cpp/blob/master/videos.md)
* [Awesome C Programming Tutorials in Hi Def [HD]](https://www.youtube.com/playlist?list=PLCB9F975ECF01953C) - A collection of detailed C Programming Language Tutorials for Beginners and New Programmers.
* 🌎 [C++](www.youtube.com/playlist?list=PL2F919ADECA5E39A6) - by VoidRealms.
* 🌎 [C++ Qt Programming](www.youtube.com/playlist?list=PL2D1942A4688E9D63) - by VoidRealms.
* 🌎 [C++ Programming Tutorials Playlist](www.youtube.com/playlist?list=PLAE85DE8440AA6B83) - TheNewBoston Official Buckys C++ Programming Tutorials Playlist.
* 🌎 [C++ Programming Tutorials from thenewboston](www.youtube.com/playlist?list=PLF541C2C1F671AEF6) - These are all of thenewboston's C++ programming tutorials.
* 🌎 [C++ GUI with Qt Playlist](www.youtube.com/playlist?list=PLD0D54219E5F2544D) - Official Playlist for thenewboston C++ GUI with Qt tutorials.
* 🌎 [Caleb Curry's C Programming Tutorials](www.youtube.com/playlist?list=PL_c9BZzLwBRKKqOc9TJz1pP0ASrxLMtp2) - An all-in-one playlist of tutorials for C programming.
* 🌎 [C Programming Tutorials](www.youtube.com/playlist?list=PL78280D6BE6F05D34) - All of TheNewBoston's C programming tutorials are right here.
* 🌎 [Bo Qian's playlist](www.youtube.com/user/BoQianTheProgrammer/playlists) - Boost Library, C++ Standard Library, Modern C++, Advanced C++, Advanced STL, ...
* 🌎 [The Cherno's C++ Playlist](www.youtube.com/playlist?list=PLlrATfBNZ98dudnM48yfGUldqGD0S4FFb) - Extensive C++ tutorial series by The Cherno.
* 🌎 [Code for Yourself C++ Playlist](www.youtube.com/playlist?list=PLwhKb0RIaIS1sJkejUmWj-0lk7v_xgCuT) - A complete C++ course covering everything from fundamentals to software design.
## Websites
*Useful C or C++ related websites.*
* 🌎 [Standard C++](isocpp.org/) :zap: - News, Status & Discussion about Standard C++.
* 🌎 [Build Bench](build-bench.com/) - Compare C++ Builds.
* 🌎 [Quick Bench](quick-bench.com/) - Quick C++ Benchmarks.
* [CppCon](http://cppcon.org/) - The C++ Conference.
* 🌎 [C++ reference](cppreference.com) - A complete online reference for the C and C++ languages and standard libraries.
* [C++ by Example](http://www.cbyexample.com/) - Learn C++ by Example.
* [cplusplus.com](http://www.cplusplus.com/) - The C++ Resources Network.
* [C FAQ](http://c-faq.com/) - C frequently asked questions.
* [C++ FAQ](http://www.parashift.com/c++-faq/) - C++ frequently asked questions.
* [C++ FQA Lite](http://yosefk.com/c++fqa/) - C++ frequently questioned answers.
* 🌎 [C++ Quiz](cppquiz.org) - A simple online quiz that you can use to test your knowledge of the C++ programming language.
* [Guru of the Week](http://www.gotw.ca/gotw/) - A regular series of C++ programming problems created and written by Herb Sutter.
* [Meeting C++](http://meetingcpp.com/)
* 🌎 [PVS-Studio’s challenge](quiz.pvs-studio.com) - PVS-Studio’s C++ quiz in which you're asked to find errors in code fragments of open source projects.
* 🌎 [Udemy C++ Courses and Tutorials](www.udemy.com/topic/C-plus-plus-tutorials/)
* [C++ Hints](http://cpphints.com/) - Every business day hints about most often C++ mistakes and ways to solve them from PVS-Studio Team.
* 🌎 [C++ tutorial](hackr.io/tutorials/learn-c-plus-plus) - A user ranked online tutorial bank site displaying multiple courses to learn C++ from.
* 🌎 [C++ Tutorial for Beginners](www.scaler.com/topics/cpp) - A comprenhensive tutorial on C++ curated by trained experts.
* 🌎 [cppexpert.online](cppexpert.online) - Learn the best C++ practices by improving code snippets with some problems or with bad practices.
* [C++ for yourself](https://github.com/cpp-for-yourself) - A comprehensive tutorial on modern C++ covering everything from fundamentals to software design.
## Weblogs
*Useful C or C++ related weblogs.*
* 🌎 [Coding For Speed](codingforspeed.com/) - Coding For Speed DOT COM, Less Execution Time.
* [Eric Niebler](http://ericniebler.com/)
* 🌎 [Sticky Bits](blog.feabhas.com/)
* [Paul Fultz II's Blog](http://pfultz2.com/blog/)
* [ridiculousfish](http://ridiculousfish.com/blog/posts/will-it-optimize.html) - Will It Optimize?
* [Embedded in Academia](http://blog.regehr.org/)
* 🌎 [Simplify C++](arne-mertz.de/)
* 🌎 [Fluent C++](www.fluentcpp.com/)
* 🌎 [Bartek's Coding Blog](www.bfilipek.com/?m=1)
* 🌎 [Kenny Kerr](kennykerr.ca/articles/)
* 🌎 [Sutter’s Mill](herbsutter.com/gotw/)
* 🌎 [Vorbrodt's C++ Blog](vorbrodt.blog/)
* 🌎 [foonathan::blog()](foonathan.net/index.html)
* 🌎 [C++ Team Blog](devblogs.microsoft.com/cppblog/) - Dev blog from the Microsoft Visual C++ team
## Other Awesome Projects
*Collection of useful codes, snippets, ...*
* 5285⭐ 1519🍴 [algorithms](https://github.com/xtaci/algorithms)) - Algorithms & Data Structures in C++.
* 3361⭐ 729🍴 [c-algorithms](https://github.com/fragglet/c-algorithms)) - C algorithms library.
* 1448⭐ 609🍴 [30 Seconds of C++](https://github.com/Bhupesh-V/30-seconds-of-cpp))
# Other Awesome Lists
*Other amazingly awesome lists*
* 10041⭐ 703🍴 [lists](https://github.com/jnv/lists)) - List of (awesome) lists curated on GitHub.
* 32142⭐ 3556🍴 [awesome-awesomeness](https://github.com/bayandin/awesome-awesomeness)) - A curated list of awesome awesomeness.
* 335911⭐ 27968🍴 [awesome](https://github.com/sindresorhus/awesome)) :zap: - A curated list of awesome lists.
* 4583⭐ 485🍴 [C++ links](https://github.com/MattPD/cpplinks)) - A categorized list of C++ resources.
* 🌎 [Awesome C++](cpp.libhunt.com/) - LibHunt's mirror.
* 🌎 [Awesome C](notabug.org/koz.ross/awesome-c) 1
* 3496⭐ 358🍴 [Awesome C](https://github.com/aleksandar-todorovic/awesome-c)) 2
* 11983⭐ 1157🍴 [Awesome Modern C++](https://github.com/rigtorp/awesome-modern-cpp)) - A collection of resources on modern C++.
* 2384⭐ 256🍴 [AwesomePerfCpp](https://github.com/fenbf/AwesomePerfCpp)) - A curated list of awesome C/C++ performance optimization resources.
* 340802⭐ 61892🍴 [free-programming-books](https://github.com/vhf/free-programming-books)) - List of Freely Available Programming Books.
* [Inqlude](http://inqlude.org/) - The Qt library archive.
* 88557⭐ 5753🍴 [papers-we-love](https://github.com/papers-we-love/papers-we-love)) - Papers from the computer science community to read and discuss.
* 21000⭐ 2661🍴 [awesome-algorithms](https://github.com/tayllan/awesome-algorithms)) - A curated list of awesome places to learn and/or practice algorithms.
* 3538⭐ 222🍴 [awesome-hpp](https://github.com/p-ranav/awesome-hpp)) - A curated list of awesome header-only C++ libraries.
* 6096⭐ 416🍴 [awesome-talks](https://github.com/JanVanRyswyck/awesome-talks)) - A lot of screencasts, recordings of user group gatherings and conference talks.
* 45400⭐ 10584🍴 [Projects](https://github.com/karan/Projects)) - A list of practical projects that anyone can solve in any programming language.
* 71772⭐ 8904🍴 [Awesome interview questions](https://github.com/MaximAbramchuck/awesome-interviews)) - A list of lists of interview questions for the most popular technologies, including C and C++.
* 9012⭐ 592🍴 [nothings/single_file_libs](https://github.com/nothings/single_file_libs)) :zap: - List of single-file C/C++ libraries.
# Jobs
* This list is currently empty, but you can add to it by opening a merge request.
# Sponsors
* Please reach out if you are interested in sponsoring this repo. Your company's name and logo will be prominently displayed here.
# Contributing
Please take a quick gander at the [contribution guidelines](https://github.com/correia-jpv/fucking-awesome-cpp/blob/master/CONTRIBUTING.md) for details.
Thanks to all [contributors](https://github.com/correia-jpv/fucking-awesome-cpp/graphs/contributors); you rock!
#### *If you see a project or link here that is no longer maintained or is not a good fit, please submit a pull request to improve this document. Thank you!*
## Source
60374⭐ 7848🍴 [fffaraz/awesome-cpp](https://github.com/fffaraz/awesome-cpp))