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An open API service indexing awesome lists of open source software.

awsome-dotnet

About A collection of awesome .NET libraries, tools, frameworks and software
https://github.com/stackdev19/awsome-dotnet

Last synced: about 7 hours ago
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  • Source Generator

    • Awesome Xamarin - A collection of interesting libraries/tools for Xamarin mobile projects.
    • Awesome .NET Core - A collection of awesome .NET core libraries, tools, frameworks and software
    • Awesome Roslyn - A curated list of awesome Roslyn books, tutorials, open source projects, analyzers, code fixes, and refactorings.
    • Awesome Unity - A categorized community-driven collection of high-quality awesome Unity assets, projects, and resources.
    • awesome-ddd - A curated list of Domain-Driven Design (DDD), Command Query Responsibility Segregation (CQRS), Event Sourcing, and Event Storming resources
    • Weekly C# Digest - Weekly email newsletter with manually curated top 5 links from the .NET community.
    • .NET-libraries-that-make-your-life-easier - Open Source .NET libraries that make your life easier
    • Awesome .NET Performance - A curated list of awesome .NET Performance books, courses, trainings, conference talks, blogs and most inspiring open source contributors.
    • ASP.NET Core Library and Framework Support - A list of what .NET libraries and frameworks are currently supported by ASP.NET Core and .NET Core).
    • Supernova.Enum.Generators - A C# source generator to create an enumeration class from an enum type. With this package, you can work on enums very, very fast without using reflection.
    • awesome-LINQ - A curated collection of awesome LINQ libraries, tools, and more.
    • awesome-analyzers - A curated list of .NET Compiler Platform ("Roslyn") diagnostic analyzers and code fixes.
    • Discover .NET - Awesome .NET open source and community resources.
    • .NET Open Source Developer Projects - This community maintained list showcases .NET open source projects that are useful for any aspect of the development process.
    • Awesome Microservices .NET Core - A collection of awesome training series, articles, videos, books, courses, sample projects, and tools for Microservices in .NET Core.
    • dotnet-console-games - Game examples implemented in .NET console applications.
    • NuGet Trends - Check out NuGet packages adoption and what's trending on NuGet.

  • Continuous Integration

    • AppVeyor - .NET Continuous Integration and Deployment as a service. **[$]** **[Free for OSS]**
    • TeamCity - Ready to work, extensible and developer-friendly build server — out of the box **[$]**
    • MyGet - Continuous Integration and Deployment, Hosted Package Repository for NuGet, NPM, Bower and VSIX **[$]**

  • IDE

    • Rider - A cross-platform C# IDE based on the IntelliJ platform and ReSharper
    • Visual Studio Code - Excellent open source editor from Microsoft, based on Electron.
    • Visual Studio Express - The free lightweight version of Visual Studio for .NET programming.
    • Visual Studio Community - A full-featured IDE
    • MonoDevelop - MonoDevelop is a cross-platform IDE mostly aimed at Mono/.NET developers
    • SharpDevelop - A free IDE for .NET programming languages
    • AvalonStudio - An extensible, cross platform IDE written in C# for Embedded C/C++, .NET Core, Avalonia and Typescript
    • Waf DotNetPad - A simple and fast code editor that makes fun program with C# or Visual Basic.
    • Ionide - An Atom Editor and Visual Studio Code package suite for cross platform F# development.
    • RoslynPad - A simple C# editor based on Roslyn and AvalonEdit.

  • API

    • Breeze - API framework enabling rich data access by using the OData 3 protocol. Client libraries available for JavaScript and C#.
    • Telegram.Bot - .NET Client for [Telegram Bot API](https://core.telegram.org/bots/api)
    • NancyFx - Lightweight, low-ceremony, framework for building HTTP-based services on .NET and Mono
    • Mobius: C# API for Spark - Mobius adds C# language binding to Apache Spark, enabling the implementation of Spark driver code and data processing operations in C#.
    • ServiceStack - Thoughtfully architected, obscenely fast, thoroughly enjoyable web services for all
    • Nelibur - Nelibur is message based web service framework on the pure WCF. Nelibur simplifies creating high-performance and message-based web services and you certainly have all the power of the WCF.
    • WebAPI Contrib - Collection of open source projects to help improve your work with ASP.NET Web API
    • TLSharp - It's a perfect fit for any developer who would like to send data directly to Telegram users or write own custom Telegram client.
    • WTelegramClient - Automate a user account on Telegram, using the latest version of [Telegram Client API](https://core.telegram.org/methods)
    • FFImageLoading - Fast & Furious Image Loading - This Library to load images quickly & easily on Xamarin.iOS, Xamarin.Android, Xamarin.Forms, Xamarin.Mac / Xamarin.Tizen and Windows (UWP, WinRT)
    • Ocelot - .NET core API Gateway
    • CommandQuery - Command Query Separation for 🌐ASP.NET Core ⚡AWS Lambda ⚡Azure Functions ⚡Google Cloud Functions 🌐ASP.NET Web API 2
    • Xamarin.Essentials - Xamarin.Essentials provides developers with cross-platform APIs for their mobile applications.
    • ASP.NET Web API - Framework that makes it easy to build HTTP services that reach a broad range of clients, including browsers and mobile devices

  • Artificial Intelligence

    • SIML - Synthetic Intelligence Markup Language, a next generation Chatbot & Digital Assistant Language.

  • Authentication and Authorization

    • IdentityModel - Helper library for identity & access control in .NET 4.5 and MVC4/Web API.
    • IdentityServer - Extensible OAuth2 and OpenID Connect provider framework.
    • OAuth - A very lightweight library for generating OAuth 1.0a signatures written in C#
    • Stuntman - Stuntman is a library for impersonating users during development leveraging .NET Claims Identity.
    • DotNetOpenAuth - A C# implementation of the OpenID, OAuth and InfoCard protocols
    • ASP.NET SAML - SAML authentication support for ASP.NET apps
    • Logibit Hawk - A F# [Hawk](https://github.com/outmoded/hawk) authentication library
    • ASP.NET Identity - New membership system for ASP.NET applications

  • Business Intelligence

    • NReco PivotData - in-memory data aggregation/OLAP library, pivot tables generation (render to HTML, exports), ASP.NET pivot builder control **[$][Free for single-deployment/non-SaaS]**
    • FastReport - The open source report generator for .NET Core 2.x/.Net Framework 4.x. FastReport can be used in ASP.NET MVC, Web API applications.

  • CLI

    • Appccelerate - Command Line Parser - A command-line parser with fluent definition syntax, different argument types, required and optional arguments, value restrictions, aliases, type conversion and semi-automatic usage help message composition
    • Fluent Command Line Parser - A simple, strongly typed .NET C# command-line parser library using a fluent easy to use interface
    • Power Args - PowerArgs converts command-line arguments into .NET objects that are easy to program against. It also provides a ton of optional capabilities such as argument validation, auto generated usage, tab completion, and plenty of extensibility
    • Argu - Declarative CLI argument & XML configuration parser for F# applications.
    • CliFx - Declarative framework for building command line interfaces.
    • Typin - Simple to use declarative framework for interactive CLI applications and command line tools (direct mode) that has its roots in CliFx.
    • clipr - A CLI library inspired by Python's argparse that transforms a command line into a strongly-typed object. It supports custom argument types, automated (and localized) help generation, and a variety of ways to store parsed arguments.
    • CliWrap - Wrapper for command line interfaces.
    • Colorful.Console - Colorful console output.
    • CommandDotNet - Model your console app using C# in a composable manner. Define commands with methods. Define subcommands with properties or nested classes. Extensible parsing and command execution.
    • Command Line Parser - The Command Line Parser Library offers to CLR applications a clean and concise API for manipulating command-line arguments and related tasks
    • CommandLineUtils - This is a fork of Microsoft.Extensions.CommandLineUtils, which is no longer under active development.
    • CsConsoleFormat - .NET C# library for advanced formatting of console output.
    • Docopt - Command-line interface description language that will make you smile.
    • EntryPoint - Composable CLI Argument Parser for .NET Core & .NET Framework 4.5+.
    • JustCli - That’s just a quick way to create your own command line tool.
    • ReadLine - A GNU-Readline like library for .NET/.NET Core.
    • RunInfoBuilder - A unique command line parser, utilizing object trees for commands.
    • SharpNetSH - A simple netsh library for C#.
    • Gui.cs - Terminal UI toolkit for .NET.
    • spectre.console - A library that makes it easier to create beautiful console applications.

  • CMS

    • DotNetNuke - DNN Platform is our free, open source web CMS and the foundation of every professional DNN solution. Over 750,000 organizations worldwide have built websites powered by the DNN Platform.
    • Composite C1 - A web CMS that focus on UX and adaptability
    • Orchard - Free, open source, community-focused project aimed at delivering applications and reusable components on the ASP.NET platform
    • Umbraco - Umbraco is a free open source Content Management System built on the ASP.NET platform
    • mojoPortal - MojoPortal is an extensible, cross database, mobile friendly, web content management system (CMS) and web application framework written in C# ASP.NET
    • N2CMS - Open source, lightweight, code-first CMS able to seamlessly integrate into any MVC project.
    • Squidex - square&cacheSeconds=604800) ![GitHub stars](https://img.shields.io/github/last-commit/Squidex/squidex?style=flat-square&cacheSeconds=86400) - Open source headless CMS and content management hub. https://squidex.io
    • BlogEngine.NET - Simple but full featured ASP.NET blog

  • Code Analysis and Metrics

    • StyleCop - StyleCop analyzes C# source code to enforce a set of style and consistency rules
    • Codinion - Enhanced syntax highlighting for C# and some other "Visual" features. **[$]**
    • Gendarme - Extensible rule-based tool to find problems in .NET applications and libraries
    • Metrics-Net - Capturing CLR and application-level metrics. So you know what's going on.
    • BenchmarkDotNet - Powerful .NET library for benchmarking.
    • .NET Compiler Platform ("Roslyn") Analyzers - A number of Roslyn diagnostic analyzers initially developed to help flesh out the design and implementation of the static analysis APIs.
    • App.Metrics - App Metrics is an open-source and cross-platform .NET library used to record and report metrics within an application and reports it's health. See the [docs](https://www.app-metrics.io/) for me details.
    • AspNet.Metrics - Capturing CLR, application-level web request metrics. Middleware and extensions using Metrics-Net
    • NsDepCop - Static code analysis tool to enforce namespace dependency rules in C# projects.
    • NDepend - is a Visual Studio and VS Team Services extension that estimates your .NET code quality and Technical-Debt, that lets create code rules with C# LINQ syntax, visualize code structure and focus on changes and evolution. **[$]**

  • Code Snippets

    • .NET Fiddle - Write, compile and run C#, F# and VB code in the browser. The .Net equivalent of JSFiddle.
    • Sharplab - Run C# code using different branches and versions of Roslyn, see the IL that was produced and examine the JIT's output.
    • Gistlyn - Create, run and share your executable C# GitHub Gists.

  • Compilers, Transpilers and Languages

    • Hybridizer - CIL (C#, VB.Net, F#) to CUDA compiler. **[$]**
    • PeachPie - PeachPie is a PHP compiler and runtime for .NET and .NET Core, which allows entire PHP applications to run on the modern, secure and performant .NET and .NET Core platforms.
    • ClojureCLR - A port of Clojure to the CLR, part of the Clojure project
    • JSIL - CIL to JavaScript Compiler http://jsil.org/
    • Mono-basic - Visual Basic Compiler and Runtime
    • Nemerle - Nemerle is a high-level statically-typed programming language for the .NET platform. It offers functional, object-oriented and imperative features. It has a simple C#-like syntax and a powerful meta-programming system.
    • Netjs - .NET to TypeScript and JavaScript compiler. Portable Class Libraries work great for this. You can even pass EXEs.
    • Roslyn - The .NET Compiler Platform ("Roslyn") provides open-source C# and Visual Basic compilers with rich code analysis APIs. It enables building code analysis tools with the same APIs that are used by Visual Studio.
    • VisualFSharp - The Visual F# compiler and tools
    • Fable - F# to JavaScript Compiler
    • LinqOptimizer - An automatic query optimizer-compiler for Sequential and Parallel LINQ
    • IronScheme - R6RS Scheme compiler, runtime and many standard libraries
    • Mond - A dynamically typed scripting language written in C# with a REPL, debugger, and simple embedding API.
    • P - P is a language for asynchronous event-driven programming.
    • Testura.Code - Wrapper around the Roslyn API and used for generation, saving and compiling C# code. It provides methods and helpers to generate classes, methods, statements and expressions.
    • Roslyn-linq-rewrite - Compiles C# code by first rewriting the syntax trees of LINQ expressions using plain procedural code, minimizing allocations and dynamic dispatch.
    • Iron python - A python 2 implementation that is integrated with the dot net framework.
    • F# - The F# compiler, core library and tools - a functional programming language for safer, faster, better code writing.
    • Amplifier.NET - Write and compile your own kernel function using C# and Amplifier will take care of running it on your favorite hardware. Amplifier allows .NET developers to easily run complex applications with intensive mathematical computation on Intel CPU/GPU, NVIDIA, AMD without writing any additional C kernel code.

  • Compression

    • Snappy for Windows - Snappy compression library for .NET baked on P/Invoke
    • SharpCompress - SharpCompress is a compression library for .NET/Mono/Silverlight/WP7 that can unrar, un7zip, unzip, untar unbzip2 and ungzip with forward-only reading and file random access APIs. Write support for zip/tar/bzip2/gzip are implemented
    • DotNetZip.Semverd - An open-source project that delivers a .NET library for handling ZIP files, and some associated tools. (fork of [**Unmaintained** DotNetZip](https://archive.codeplex.com/?p=dotnetzip))
    • SharpZipLib - a Zip, GZip, Tar and BZip2 library written entirely in C# for the .NET platform
    • Snappy.Sharp - An implementation of Google's Snappy compression algorithm in C#.

  • Database Drivers

    • MySQL Connector - Connector/Net is a fully-managed ADO.NET driver for MySQL
    • Firebird.NET - The .NET Data provider is written in C# and provides a high-performance, native implementation of the Firebird API
    • Npgsql - .NET data provider for PostgreSQL
    • MongoDB - Official MongoDB C# driver
    • ServiceStack Redis - .NET's leading C# Redis client
    • StackExchange Redis - General purpose Redis client from StackExchange
    • Cassandra - DataStax .NET driver for Apache Cassandra
    • Couchbase - Official Couchbase .NET client library, based on the Enyim memcached client
    • Storage.Net - Generic storage abstractions and implementations for popular cloud storage providers like Amazon S3, Azure Service Bus, Azure Event Hub, Azure Storage, Azure Data Lake Store and many others.
    • Stowage - Bloat-free zero dependency .NET cloud storage kit that supports at minimum THE major cloud providers.

  • Decompilation

    • ILSpy - ILSpy is the open-source .NET assembly browser and decompiler
    • dotPeek - Free-of-charge standalone tool based on ReSharper's bundled decompiler. It can reliably decompile any .NET assembly into equivalent C# or IL code. It can create Visual Studio solutions based on the original binary files in a straight-forward way. **[Proprietary]** **[Free]**
    • dnSpy - open-source .NET assembly browser, editor, decompiler and debugger

  • Distributed Computing

    • MBrace - Integrated Data Scripting for the Cloud
    • Akka.net - Akka.NET is a port of the popular Java/Scala framework Akka to .NET. This is a community-driven port and is not affiliated with Typesafe who makes the original Java/Scala version.
    • Foundatio - Pluggable foundation blocks for building distributed apps.
    • .NEXT Raft - Raft implementation for .NET and ASP.NET Core that allows to build clustered microservices powered by distributed consensus and replication
    • Orleankka - Orleankka is a functional API for Microsoft Orleans framework. It is highly suitable for scenarios where having composable, uniform communication interface is preferable, such as: CQRS, event-sourcing, re-routing, FSM, etc. Additional API available for F# called Orleankka.FSharp.
    • Zebus - Zebus is a lightweight, highly versatile, peer-to-peer service bus, built with CQRS principles in mind. It allows applications to communicate with each other in a fast and easy manner. Most of the complexity is hidden in the library and you can focus on writing code that matters to you, not debugging messaging code. A very fundamental base for any distributed application.
    • FsShelter - F# library for authoring [Apache Storm](https://storm.apache.org) components and topologies. Offering high-level abstractions for distributed and fault-tolerant event stream processing.
    • protoactor-dotnet - Proto Actor - Ultra fast distributed actors for Golang and C#

  • Event aggregator and messenger

    • Rx Event Aggregator - Super-simple Reactive-Extension code from Reactive.EventAggregator
    • Mediator.Net - A simple mediator for .NET for sending command, publishing event and request response with pipelines supported
    • MediatR - Simple, unambitious mediator implementation in .NET
    • TinyMessenger - A lightweight event aggregator/messenger for loosely coupled communication.
    • Xer.Cqrs - A simple library for creating applications based on the CQRS pattern with support for attribute routing and hosted handlers. Developed in C# targeting .NET Standard 1.0.
    • FluentMediator - FluentMediator is an unobtrusive library that allows developers to build custom pipelines for Commands, Queries and Events

  • Extensions

  • Game

    • Stride Game Engine - Stride Game Engine is a 2D/3D cross-platform game engine featuring a scene editor, particles, physically based rendering (PBR), scripting, and much more
    • Wave Engine - Wave engine is a free C# component-based modern game engine which allows you to create cross-platform games supporting Kinect, Oculus Rift, Vuforia, Cardboard, Leap Motion and much more. **[Free][Proprietary]**
    • MonoGame - One framework for creating powerful cross-platform games
    • FNA - FNA is an XNA4 reimplementation that focuses solely on developing a fully accurate XNA4 runtime for the desktop
    • CocosSharp - CocosSharp is a C# implementation of the Cocos2D and Cocos3D APIs that runs on any platform where MonoGame runs
    • Duality - Duality is a 2D game development framework. Focused on modularity, comes with a visual editor.
    • UrhoSharp - UrhoSharp is a C# implementation of the Urho3D game engine that runs on iOS, Mac, Windows, Android and Linux systems
    • Nez - Nez is a free 2D-focused framework that works with MonoGame and FNA
    • BEPUphysics - BEPUphysics is a pure C# 3D physics library
    • Devtodev - A full-cycle analytics solution for game developers.
    • UnrealCLR - Unreal Engine .NET Core integration
    • osu!framework - A 2D application/game written with amazing games in mind.
    • OpenRA - A Libre/Free Real Time Strategy game engine supporting early Westwood classics.
    • Wave Engine - Wave engine is a free C# component-based modern game engine which allows you to create cross-platform games supporting Kinect, Oculus Rift, Vuforia, Cardboard, Leap Motion and much more. **[Free][Proprietary]**
    • Stride Game Engine - Stride Game Engine is a 2D/3D cross-platform game engine featuring a scene editor, particles, physically based rendering (PBR), scripting, and much more

  • GIS

    • SharpMap - to-use mapping library for use in web and desktop applications
    • OsmSharp - C# library to work with OpenStreetMap (OSM) data. Provides reading, writing and route-planning for OSM data.
    • NetTopologySuite
    • GeoJSON4EntityFramework - A library to create GeoJSON from Entity Framework Spatial Data or Well-Known Text (WKT) inputs.
    • GeoJSON.NET - .Net library for GeoJSON types & corresponding Json.Net (de)serializers
    • CoordinateSharp - Easily parse or convert coordinate formats and calculate location based solar/lunar information.
    • DEM Net Elevation API - .Net library for Digital Elevation Models, allows 3D terrain generation in glTF / STL format.
    • NetTopologySuite

  • Graphics

    • Oxyplot - OxyPlot is a cross-platform plotting library for .NET
    • LiveCharts2 - Simple, flexible, interactive & powerful charts, maps, and gauges for .Net. LiveCharts2 supports WPF, WinForms, Xamarin, Avalonia, WinUI, UWP.
    • LibTessDotNet - .NET port of the famous GLU Tessellator, triangulates polygons
    • OpenTK - The Open Toolkit is an advanced, low-level C# library that wraps OpenGL, OpenCL and OpenAL
    • NGraphics - NGraphics is a cross-platform library for rendering vector graphics on .NET
    • AssimpNet - A cross-platform .NET Standard wrapper for the Open Asset Importer ("Assimp"). The library enables importing, processing, and exporting of 3D models for rendering in graphics/game applications. Over 40 formats are supported for importing (e.g. OBJ, FBX, GLTF, 3DS, Collada) and a subset of those formats can be exported to (e.g. OBJ, GLTF, 3DS, Collada). Mesh processing features allow for mesh data to be generated or optimized for real-time rendering.
    • RealTimeGraphX - RealTimeGraphX is a data type agnostic, high performance plotting library for WPF, UWP and soon, Xamarin Forms.
    • Veldrid - A low-level, portable graphics and compute library for .NET
    • Oxyplot - OxyPlot is a cross-platform plotting library for .NET
    • Helix Toolkit - Helix Toolkit is a collection of 3D components for .NET
    • Aspose.Drawing - Fully managed, cross-platform, complete 2D graphic library for drawing text, geometries, and images, with System.Drawing compatible API. **[$]**
    • ScottPlot - A plotting library to interactively displays large datasets. Line plots, bar charts, pie graphs, scatter plots, and more. It supports WinForms, WPF, Avalonia, Console.

  • GUI

    • DockPanelSuite - The Visual Studio inspired docking library for .NET WinForms
    • MaterialDesignInXamlToolkit - Toolkit for creating Material Design styled WPF apps
    • Empty Keys UI - Multi-platform and multi-engine XAML based user interface library **[Free][Proprietary]**
    • UNO Platform - The only platform for building native mobile, desktop and WebAssembly with C#, XAML from a single codebase. Open source and professionally supported. Website: [platform.uno](https://platform.uno/)
    • Xamarin.Forms - Build native UIs for iOS, Android and Windows from a single, shared C# codebase.
    • HandyControl - Contains some simple and commonly used WPF controls
    • Lara - Lara Web Engine is a library for developing Web user interfaces in C#
    • QtSharp - Mono/.NET Bindings for Qt
    • Qml.Net - A cross-platform Qml/.NET integration for Mono/.NET/.NET Core
    • MahApps.Metro - Toolkit for creating Metro-styled WPF apps
    • Callisto - A control toolkit for Windows 8 XAML applications. Contains some UI controls to make it easier to create Windows UI style apps for the Windows Store in accordance with Windows UI guidelines.
    • Avalonia - A multi-platform .NET UI framework (formerly known as Perspex).
    • WinApi - A simple, direct, ultra-thin CLR library for high-performance Win32 Native Interop with automation, windowing, DirectX, OpenGL and Skia helpers.
    • Ooui - A small cross-platform UI library that brings the simplicity of native UI development to the web
    • AdonisUI - Lightweight UI toolkit for WPF applications offering classic but enhanced Windows visuals.
    • MaterialSkin - Theming .NET WinForms, C# or VB.Net, to Google's Material Design principles.
    • Windows UI Library - The Windows UI Library (WinUI) provides official native Microsoft UI controls and features for Windows UWP apps.
    • XWT - A cross-platform UI toolkit for creating desktop applications with .NET and Mono
    • Eto.Forms - Cross-platform GUI framework for desktop and mobile applications in .NET and Mono
    • Fluent.Ribbon - Fluent Ribbon Control Suite is a library that implements an Office- and Windows 8-like Ribbon for WPF.
    • FastColoredTextBox - Fast Colored TextBox is text editor component for .NET. Allows you to create custom text editor with syntax highlighting. It works well with small, medium, large and very-very large files.
    • Neutronium - Build .NET desktop applications using HTML, CSS, javascript and MVVM bindings such as with WPF.
    • AvalonEdit - The WPF-based text editor component used in SharpDevelop
    • Modern UI for WPF - MUI - Set of controls and styles to convert WPF applications into a great looking Modern UI apps.
    • Dragablz - Dragable, tearable WPF tab control (similar to Chrome) which supports layouts and is full themeable, including themese compatible with MahApps and Material Design.
    • SciterSharp - Create .NET cross-platform desktop apps using not just HTML, but all features of Sciter engine: CSS3, SVG, scripting, AJAX, <video>... Sciter is free for commercial use
    • Gtk# - Gtk# is a Mono/.NET binding to the cross platform Gtk+ GUI toolkit and the foundation of most GUI apps built with Mono
    • Bunifu UI Framework - Carefully crafted Winforms controls and components for creating stunning modern application UI. **[$]**
    • Office Ribbon - A library that implements MS Office Ribbon for WinForms.
    • ScintillaNET - Windows Forms control for the Scintilla text editor component (Scintilla is used by Notepad++)
    • MaterialDesignInXamlToolkit - Toolkit for creating Material Design styled WPF apps
    • ObjectListView - ObjectListView is a C# wrapper around a .NET ListView. It makes the ListView much easier to use and teaches it some new tricks
    • Ookii.Dialogs.Wpf - Enable WPF applications to access common Windows dialogs such as task dialogs, credential dialog, progress dialog, folder browser dialog, and more
    • Ookii.Dialogs.WinForms - Enable Windows Forms applications to access common Windows dialogs such as task dialogs, credential dialog, progress dialog, folder browser dialog, and more

  • HTML and CSS

    • HtmlAgilityPack - an agile HTML parser that builds a read/write DOM and supports plain XPath or XSLT
    • AngleSharp - Complete HTML5 DOM and CSS3 OM construction
    • LibSass Host - .NET wrapper around the [libSass](https://sass-lang.com/libsass) library with the ability to support a virtual file system
    • dotless - .NET port of the Ruby Less CSS lib http://www.dotlesscss.org
    • ExCSS - CSS3 parser library for C#
    • LtGt - lightweight HTML processor, can be used to parse and navigate DOM, handles CSS selectors, can convert to Linq2Xml, easily extensible, and more.

  • Image Processing

    • ImageResizer - Add commands to image URLs to get altered versions in milliseconds. Resizing, editing etc of images in real-time.
    • DynamicImage - High-performance open-source image manipulation library for ASP.NET.
    • Emgu CV - Cross-platform .NET wrapper for the OpenCV library.
    • Imgix-CSharp - Easily update image urls to be fast and responsive. **[$]**
    • ImageProcessor - Open-source .NET library to manipulate images on-the-fly.
    • ImageSharp - Fully managed cross-platform library for processing of image files.
    • Magick.NET - .NET wrapper for the ImageMagick library.
    • MetadataExtractor - Extracts Exif, IPTC, XMP, ICC and other metadata from image files.
    • PixelViewer - Cross-platform (Windows/macOS/Linux) image viewer which supports reading raw Luminance/YUV/RGB/ARGB/Bayer pixels data from file and rendering it. 10/16-bit YUV and viewing image frame sequence are also supported (v1.99+).
    • Emgu CV - Cross-platform .NET wrapper for the OpenCV library.
    • DotImaging - Minimalistic .NET imaging portable platform
    • TeximpNet - A cross-platform .NET Standard library for reading/manipulating/writing image files. The primary focus is to create 2D/3D/Cubemap textures for graphics/game applications, notably to convert images to GPU compressed formats and generate mipmaps. The library wraps the FreeImage native library to import/export over 30 common image formats, and wraps the Nvidia Texture Tools native library for GPU compression features. It also has a fully featured DDS format importer/exporter written in C#.
    • Colourful - Open source .NET library for working with color spaces.
    • ColorHelper - Useful methods for work with colors.
    • Imgix-CSharp - Easily update image urls to be fast and responsive. **[$]**

  • Install tools

    • Wix Toolset - The most powerful set of tools available to create your Windows installation experience
    • Wax - An interactive editor for WiX projects.
    • Chocolatey - like `yum` or `apt-get`, but for Windows.
    • Onova - An unopinionated auto-update framework for desktop applications.
    • Squirrel - Squirrel is both a set of tools and a library, to completely manage both installation and updating your desktop Windows application.
    • Wix Toolset - The most powerful set of tools available to create your Windows installation experience

  • Logging

    • ELMAH - Official ELMAH site
    • Log4Net - The Apache log4net library is a tool to help the programmer output log statements to a variety of output targets
    • BugSnag - Logs errors. Includes useful diagnostic info like stack trace, session, release, etc. Has a free tier. **[Free for OSS][$]**
    • Serilog - A no-nonsense logging library for the NoSQL era. Combines the best of traditional and structured diagnostic logging in an easy-to-use package.
    • Sentry - .NET SDK for [Sentry](https://sentry.io/welcome/) Open-source error tracking that helps developers monitor and fix crashes in real time..
    • Elmah MVC - Elmah for MVC
    • ULogViewer - Cross-Platform (Windows/macOS/Linux) Universal Log Viewer which supports reading and parsing various type of logs. You can also define your own profile to parse and show logs.
    • Logazmic - Open source NLog viewer for Windows
    • Essential Diagnostics - Extends the inbuilt features of System.Diagnostics namespace to provide flexible logging
    • Rollbar.NET - Simplifies real-time remote error monitoring while using Rollbar.com. Open-source Rollbar Notifier SDK for any .NET-based technology stack. The SDK that can be used in any application built on the following .NET versions: .NET Core 2.0+, .NET Standard 2.0+, .NET Full Framework 4.5.1+, Mono, Xamarin, and, in general, any implementation of the .NET Standard 2.0+. It simplifies building data payloads based on exception data, tracing data, informational messages, and telemetry data and sends the payloads to the Rollbar API for remote monitoring and analysis of the hosting application's behavior.
    • Sejil - Capture, view and filter your ASP.NET Core app's logs right from your app. It supports structured logging, querying as well as saving log queries.
    • StackExchange.Exceptional - Error handler used for the Stack Exchange network
    • Semantic Logging Application Block (SLAB) - Extends the inbuilt features of System.Diagnostics.Tracing namespace (EventSource class) to log to several sinks including Azure Tables, Databases, files (JSON, XML, text). Supports in-process and out-of-process logging through ETW, and Rx for real-time filtering/aggregating of events.
    • ZeroLog - ZeroLog is a zero-allocation .NET logging library. It provides basic logging capabilities to be used in latency-sensitive applications, where garbage collections are undesirable.
    • NLog - NLog - Advanced .NET and Silverlight logging
    • Logary - Logary is a high performance, multi-target logging, metric, tracing and health-check library for Mono and .NET. .NET's answer to DropWizard. Supports many targets, built for micro-services.

  • Machine Learning and Data Science

    • Accord.NET - Machine learning framework combined with audio and image processing libraries (computer vision, computer audition, signal processing and statistics).
    • FsLab - A collection of data science and machine learning libraries for F# and .NET
    • F# Data - F# type providers for accessing XML, JSON, CSV and HTML files (based on sample documents) and for accessing WorldBank data
    • m2cgen - A CLI tool to transpile trained classic ML models into a native .NET (C#, F# or Visual Basic) code with zero dependencies.
    • ML.NET - Cross-platform open-source machine learning framework which makes machine learning accessible to .NET developers.
    • Catalyst - platform Natural Language Processing (NLP) library inspired by spaCy, with pre-trained models, out-of-the box support for training word and document embeddings, and flexible entity recognition models. Part of the [SciSharp Stack](https://scisharp.github.io/SciSharp/)
    • Deedle - Data frame and (time) series library for exploratory data manipulation with C# and F# support
    • R Provider - Type provider that exposes R packages and functions in a type-safe way to F# callers
    • Accord.NET Extensions - Advanced image processing and computer vision algorithms made as fluent extensions.
    • SciSharp STACK - A rich machine learning ecosystem for .NET created by porting the most popular Python libraries to C#.
    • Infer.NET - A framework for running Bayesian inference in graphical models. It can also be used for probabilistic programming.
    • Synapses - An in-memory neural network library written in F#.
    • GeneticSharp - Multi-platform genetic algorithm library for .NET Core and .NET Framework. The library has several implementations of GA operators, like: selection, crossover, mutation, reinsertion and termination.
    • numl - Designed to include the most popular supervised and unsupervised learning algorithms while minimizing the friction involved with creating the predictive models.
    • Accord.NET - Machine learning framework combined with audio and image processing libraries (computer vision, computer audition, signal processing and statistics).

  • Markdown Processors

    • MarkdownSharp - Open source C# implementation of Markdown processor, as featured on Stack Overflow.
    • CommonMark.NET - Implementation of CommonMark specification in C# for converting Markdown documents to HTML. Optimized for maximum performance and portability.
    • markdig - A fast, powerful, CommonMark compliant, extensible Markdown processor for .NET.

  • Mathematics

    • MathNet - Math.NET is an open source initiative to build and maintain toolkits covering fundamental mathematics, targeting advanced but also every day needs of .NET developers
    • ALGLIB - ALGLIB is a cross-platform numerical analysis and data processing library. It supports several programming languages (C++, C#, Delphi) and several operating systems (Windows and POSIX, including Linux) **[Proprietary]** and **[Free Edition]**
    • UnitConversion - Expansible Unit Conversion Library for .NET Core and .NET Framework
    • AngouriMath - An open-source symbolic/computer algebra library, made primarily for C# and F#. It covers a range of features and might be considered as an alternative to SymPy in .NET.
    • AutoDiff - AutoDiff is a library for quickly computing gradients of functions defined by expressions. Mainly useful in numerical optimization
    • Vim.Math3d - A feature-rich cross-platform replacement for System.Numerics with support for consistent serialization and binary layout, and additional structures and algorithms for efficient 3D Math.
    • Microsoft Automatic Graph Layout - A set of tools for graph layout and viewing.
    • GeometRi - Simple and lightweight computational geometry library for .Net
    • Rationals - Implementation of rational number arithmetic for .NET with arbitrary precision.
    • WPF-Math - a .NET library for rendering mathematical formulae using the LaTeX typesetting style, for the WPF framework

  • Misc

    • CSharp Pad - A web-based C# REPL with awesome code completion.
    • CSScript - CS-Script is a CLR based scripting system which uses C# as a programming language. CS-Script currently targets Microsoft implementation of CLR (.NET 2.0/3.0/3.5/4.0/4.5) with full support on Mono. Comes with many additional features, such as script hosting.
    • ReactJS.NET - ReactJS.NET is a library that makes it easier to use Babel along with Facebook's React and JSX from C#.
    • Rant - The Rant Procedural Text Generation DSL
    • Aeron.NET - Efficient reliable UDP unicast, UDP multicast, and IPC message transport - .NET port of Aeron
    • Polly - Express transient-exception-handling and resilience policies such as Retry, Wait-and-Retry, Circuit Breaker, and Bulkhead Isolation in a fluent manner. Fully thread-safe and full async support. (4.0 / 4.5 / .NET Core / .NET Standard / Xamarin).
    • ConsoleTableExt - Fluent library to create table for .Net console application.
    • Enums.NET - Enums.NET is a high-performance type-safe .NET enum utility library
    • Humanizer - Humanizer meets all your .NET needs for manipulating and displaying strings, enums, dates, times, timespans, numbers and quantities
    • FluentValidation - A small validation library for .NET that uses a fluent interface and lambda expressions for building validation rules.
    • Guard - A high-performance, extensible argument validation library.
    • Valit - Valit is dead simple, fluent validation for .NET Core.
    • YoutubeExplode - Ultimate library for extracting metadata and downloading Youtube videos and playlists.
    • Coravel - zero config .NET Core library that makes Task Scheduling, Caching, Queuing, Mailing, Event Broadcasting (and more) a breeze!
    • CsvHelper - Library to help reading and writing CSV files https://github.com/JoshClose/CsvHelper
    • FormHelper - Form & Validation Helper for ASP.NET Core. Form Helper helps you to create ajax forms and validations without writing any javascript code. (Compatible with Fluent Validation)
    • Infinity Crawler - A simple but powerful web crawler library for .NET
    • ScriptCS - Write C# apps with a text editor, NuGet and the power of Roslyn!
    • Shielded - Software Transactional Memory (STM) implementation for .NET
    • HidLibrary - This library enables you to enumerate and communicate with Hid compatible USB devices in .NET.
    • Hashids.net - Generate short unique ids from integers, as per https://hashids.org
    • Streams - A lightweight F#/C# library for efficient functional-style pipelines on streams of data.
    • Warden - Define "health checks" for your applications, resources and infrastructure. Keep your Warden on the watch
    • DeviceDetector.NET - The Universal Device Detection library will parse any User Agent and detect the browser, operating system, device used (desktop, tablet, mobile, tv, cars, console, etc.), brand and model.
    • RecordParser - Library to help reading and writing CSV and Flat files with zero heap allocation.
    • AzureCrawler - Take HTML Snapshots for your Angular, Ember, Durandal or any JavaScript applications
    • FlatMapper - A library to import and export data from and to plain text files in a LINQ-compatible way.
    • Validot - Validot is a performance-first, compact library for advanced model validation. Using a simple declarative fluent interface, it efficiently handles classes, structs, nested members, collections, nullables, plus any relation or combination of them. It also supports translations, custom logic extensions with tests, and DI containers.
    • TypeShape - TypeShape is a small, extensible F# library for practical generic programming
    • ByteSize - ByteSize is a utility class that makes byte size representation in code easier by removing ambiguity of the value being represented. ByteSize is to bytes what System.TimeSpan is to time.
    • Jot - a library for persisting and restoring application state (a better alternative to .settings files).
    • SystemWrapper - SystemWrapper is .NET library for easier testing of system APIs.
    • DeviceId - Generate a 'device ID' that can be used to uniquely identify a computer.
    • NaturalSort.Extension - Extension method for StringComparer that adds support for natural sorting (e.g. "abc1", "abc2", "abc10" instead of "abc1", "abc10", "abc2").
    • Quickenshtein - An extremely quick and memory efficient Levenshtein Distance calculator with SIMD and Threading support
    • Build Versioning - Simple build versioning for .NET, powered by Git tags
    • LINQPad - a C#/VB/F# scratchpad that instantly executes any expression, statement block or program with rich output formatting and a wealth of features. Also lets you interactively query databases in LINQ. [$]
    • LINQPad.QueryPlanVisualizer - View SQL Server and Postgres query plans directly inside LINQPad.
    • MSBuild ILMerge task - MSBuild ILMerge task is a NuGet package allows you to use the famous ILMerge utility in automated builds and/or Visual Studio projects.

  • MVVM

    • Community Toolkit - Collection of control & helper libraries and samples for various .NET technologies. Contains modern MVVM library, supported by Microsoft. Includes [Windows Community Toolkit](https://github.com/CommunityToolkit/WindowsCommunityToolkit), [MAUI Community Toolkit](https://github.com/CommunityToolkit/Maui), and [Dotnet Community Toolkit](https://github.com/CommunityToolkit/dotnet).
    • Catel - Catel is an application development platform with the focus on MVVM (WPF, Silverlight, Windows Phone and WinRT) and MVC (ASP.NET MVC). The core of Catel contains an IoC container, models, validation, memento, message mediator, argument checking, etc.
    • UpdateControls - Update Controls does not require that you implement `INotifyPropertyChanged` or declare a `DependencyProperty`. It connects controls directly to CLR properties. This makes it perfect for the Model/View/ViewModel pattern.
    • MVVMCross - Cross-platform mvvm mobile development framework for WPF, Silverlight for WP7 and WP8, Mono for Android, MonoTouch for iOS, Windows Universal projects (WPA8.1 and Windows 8.1 Store apps). Makes extensive use of Portable Class Libraries (PCL) to provide maintainable cross platform C# native applications.
    • Prism - A cross-platform desktop and mobile MVVM development framework.
    • Win Application Framework (WAF) - A lightweight Framework that helps you to create well structured WPF and UWP Applications. It supports you in applying a Layered Architecture and the Model-View-ViewModel pattern.
    • Toms Toolbox - Visual Composition framework to easily build modularized MVVM applications based on the [Managed Extensibility Framework (MEF)](https://docs.microsoft.com/en-us/dotnet/framework/mef/).
    • MVVM Dialogs - Framework simplifying the concept of opening dialogs from a view model when using MVVM in WPF or UWP.
    • Gemini - IDE framework similar in concept to the Visual Studio Shell. Built on WPF, AvalonDock, and Caliburn Micro.
    • Caliburn.Micro - A small, yet powerful framework, designed for building applications across all XAML platforms. Its strong support for MV* patterns will enable you to build your solution quickly, without the need to sacrifice code quality or testability.
    • EBind - A concise, fast and feature-rich .NET data binding solution.
    • MVVM Light Toolkit - The main purpose of the toolkit is to accelerate the creation and development of MVVM applications in WPF, Silverlight, Windows Store (RT) and for Windows Phone
    • Smaragd - A platform-independent, lightweight library for developing .NET applications using the MVVM architecture.
    • UpdateControls - Update Controls does not require that you implement `INotifyPropertyChanged` or declare a `DependencyProperty`. It connects controls directly to CLR properties. This makes it perfect for the Model/View/ViewModel pattern.
    • Okra App Framework - An app centric MVVM framework for Windows 8.1 built with dependency injection in mind, including a full set of Visual Studio MVVM templates.
    • Stylet - Minimal MVVM framework inspired by Caliburn Micro, with good documentation, high test coverage, and its own IoC container

  • Office

    • GemBox.Bundle - A package of .NET components that enable fast, simple and efficient processing of office files (Excel, Word, PowerPoint, PDF and emails). **[$]****[Free Lite versions]**
    • ExcelDataReader - Lightweight and fast library written in C# for reading Microsoft Excel files (2.0-2007).
    • EPPlus - EPPlus is a .NET library that reads and writes Excel 2007/2010 files using the Open Office XML format (xlsx).
    • NPOI - This project is the .NET version of POI Java project at https://poi.apache.org/.
    • ClosedXML - ClosedXML makes it easier for developers to create Excel 2007/2010 files
    • ExcelDna - ExcelDna makes it easier to create and deploy Excel Add-Ins using C#, F# or VB .NET
    • DocX - DocX is a .NET library that allows developers to manipulate Word 2007/2010/2013 files, it does not require Microsoft Word or Office to be installed.
    • Toxy - .NET text extraction framework supports a few file formats
    • NetOffice - .NET wrapper assemblies for Microsoft Office applications.
    • ShapeCrawler - A fluent API for the processing of PowerPoint presentations without Microsoft Office installed.
    • Open XML SDK - The Open XML SDK provides open-source libraries for working with Open XML Documents (DOCX, XLSX, and PPTX).
    • MiniExcel - A micro Excel helper avoids OOM and high performance to create/mapping/template-fill-data.

  • ORM

    • FreeSql - a convenient ORM in dotnet, supports MySql, SqlServer, PostgreSQL, Oracle, Sqlite, Firebird, 达梦, 人大金仓, 神舟通用, 翰高 and Access.
    • NHibernate - NHibernate Object Relational Mapper
    • FluentMigrator - Fluent Migrations framework for .net
    • Entity Framework Core - Object-relational mapper that enables .NET developers to work with relational data using domain-specific objects
    • NPoco - Simple microORM that maps the results of a query onto a POCO object. Based on Schotime's branch of PetaPoco
    • PetaPoco - A tiny ORM-ish thing for your POCOs
    • RepoDb - A hybrid ORM library for .NET.
    • ServiceStack.OrmLite - Light, simple and fast convention-based POCO ORM **[[Free for OSS](https://github.com/ServiceStack/ServiceStack.OrmLite/blob/master/license.txt)]** **[$]**
    • SmartSql - SmartSql = MyBatis + Cache（Memory | Redis）+ ZooKeeper + R / W Splitting + Dynamic Repository ....
    • EntityFramework.Exceptions - Use typed Exceptions for Entity Framework Core when your SQL query violates database constraints in SqlServer, MySql, PostgreSQL or SQLite
    • Insight.Database - Insight.Database is a fast, lightweight, micro-ORM for .NET
    • Dapper Extensions - Small library that complements Dapper by adding basic CRUD operations (Get, Insert, Update, Delete) for your POCOs
    • LINQ to DB - The fastest LINQ database access library offering a simple, light, fast, and type-safe layer between your POCO objects and your database.
    • Massive - A small, happy, data access tool that will love you forever.
    • Entity Framework 6 - Object-relational mapper that enables .NET developers to work with relational data using domain-specific objects
    • MongoFramework - An "Entity Framework"-like interface for MongoDB
    • Fluent NHibernate - Fluent, XML-less, compile safe, automated, convention-based mappings for NHibernate.
    • AsyncPoco - A long-"awaited" fully asynchronous PetaPoco fork
    • Dapper - A simple object mapper for .NET by [StackExchange](https://stackexchange.github.io/)
    • MicroLite ORM
    • Limebean - Hybrid ORM which uses SQL fragments and doesn't require Model Classes.
    • DbExtensions - Data-access framework with a strong focus on query composition, granularity and code aesthetics.
    • Venflow - A super fast and lightweight ORM for PostgreSQL.
    • Dapper.FastCRUD - The fastest micro-ORM extension for Dapper
    • SqlSugar - Another ORM library supports many RDBMS including MySql, SqlServer, Sqlite, Oracle, Postgresql

  • Package Management

    • NuGet - The .NET package manager
    • Paket - A package dependency manager for .NET with support for NuGet packages and GitHub repositories. https://fsprojects.github.io/Paket/
    • Cloudsmith - A fully managed package management SaaS, with support for NuGet, Npm, Docker and much more. **[Free for Public/OSS]** **[$]**
    • BaGet - A cross-platform, lightweight NuGet and Symbol server

  • PDF

    • Cloudmersive PDF - Cloudmersive PDF is a native .NET Framework and .NET Core NuGet library and API service that can create, modify, encrypt or convert PDF documents at high scale and fidelity; and is free to use with no expiration **[Free]**
    • Docotic.Pdf - PDF library to create, read, edit, draw, and print PDF documents in .NET and .NET Core applications. 100% managed, without unsafe blocks. **[$]** **[[Free for OSS](https://bitmiracle.com/pdf-library/free-pdf-library.aspx)]**
    • Pdfium.Net SDK - Advanced C# PDF library for render, create, edit, merge, split, print, and view PDFs. Open source PDF Viewer is available on [GitHub](https://github.com/patagames). A [NuGet package](https://www.nuget.org/packages/Pdfium.Net.SDK/) is also available for easy inclusion into your projects.**[$]**
    • QuestPDF - QuestPDF is an open-source, modern and battle-tested library that can help you with generating PDF documents by offering friendly, discoverable and predictable C# fluent API.
    • PdfiumViewer - PdfiumViewer is a PDF viewer based on the PDFium project.
    • ITextSharp - iText is a PDF library that allows you to CREATE, ADAPT, INSPECT and MAINTAIN documents in the Portable Document Format (PDF)**[$]** **[Free for OSS]**
    • WkhtmlToPdf - C# wrapper around wkhtmltopdf console utility. Allow to generate preety PDF using HTML and CSS.
    • PdfPig - Read and create and extract text and other content from PDFs in C# (port of PdfBox)
    • Kevsoft.PDFtk - A wrapper to drive the awesome pdftk binary, which can fill PDF forms, get field information, concatenate multiple documents or pages, split documents, add or replace stamps, and can attach files to or download files from pages.

  • Protocols

    • SharpSnmpLib - An open source SNMP implementation for .NET/Mono/Xamarin. Versioin 1, 2c, and 3 are supported.
    • FluentFTP - An FTP and FTPS library for .NET, optimized for speed. Provides extensive FTP commands, file uploads/downloads and FTP proxies.
    • SSH.NET - A Secure Shell (SSH) library for .NET, optimized for parallelism. Provides SSH commands, SFTP/SCP uploads and downloads, and SOCKS4/SOCKS5/HTTP proxies.
    • DnsClient.NET - A simple yet very powerful and high performant open source library for the .NET Framework to do DNS lookups.
    • DNS - A library for parsing and serializing DNS messages. Includes a basic DNS client and server.
    • Tecan SiLA2 SDK - A library and code generator to develop SiLA2 clients and servers.
    • SharpSnmpLib - An open source SNMP implementation for .NET/Mono/Xamarin. Versioin 1, 2c, and 3 are supported.

  • Scheduling

    • Hangfire - An easy way to perform fire-and-forget, delayed and recurring tasks inside .NET apps
    • Chroniton - A simple, fully integrable, and customizable library for running strongly typed jobs (tasks) on schedules.
    • FluentScheduler - Task scheduler with fluent interface that runs automated jobs from your application
    • NCrontab - Class library for parsing & formatting [crontab](http://crontab.org/) expressions as well as calculating occurrences of time based on a crontab schedule
    • QuartzNet - Quartz Enterprise Scheduler .NET
    • Workflow Core - Lightweight embeddable workflow engine
    • DurableTask - This framework allows users to write long running persistent workflows in C# using the async/await capabilities.
    • NCrontab.Scheduler - Simple task scheduler library for scheduling NCrontab-based tasks

  • SDK and API Clients

    • Cloudmersive APIs - An API client library for .NET **[Proprietary][Free]**
    • AWS SDK - The AWS SDK for .NET enables .NET developers to easily work with Amazon Web Services
    • Octokit.NET - A GitHub API client library for .NET
    • Azure PowerShell - A set of PowerShell cmdlets for developers and administrators to develop, deploy and manage Microsoft Azure applications
    • Dropbox.NET - Official .NET SDK for the Dropbox API
    • Getty Images API SDK - SDK for the Getty Images and iStock APIs
    • Lucene.net - Lucene.Net is a port of the Lucene search engine library, written in C# and targeted at .NET runtime users
    • Elasticsearch .NET - Elasticsearch.Net & NEST
    • SolrExpress - A simple and lightweight query .NET library for Solr, in a controlled, buildable and fail fast way
    • SolrNet - Solr client for .NET
    • PlainElastic.Net - Plain .NET client for ElasticSearch

  • Static Site Generators

    • Wyam - A simple to use, highly modular, and extremely configurable static content generator
    • Pretzel - A site generation tool (and then some) for .NET platforms
    • Sandra.Snow - Jekyll-inspired static site generation for .NET
    • FsBlog - Blog aware, static site generation using F#

  • Style Guide

    • C# Style Guide - StackOverflow Q & A on style guides
    • C# Async Guidance - list of problematic asynchronous patterns for .NET Core with an explanation of how to solve those issues

  • Testing

    • BDTest - A behaviour driven testing and reporting framework!
    • NCrunch - An automated continuous & concurrent testing tool for Visual Studio. **[$]**
    • NSubstitute - A friendly substitute for .NET mocking frameworks
    • FsCheck - Random Testing for .NET.
    • Bogus - A simple and sane fake data generator for C#. Based on and ported from the famed faker.js.
    • FakeItEasy - The easy mocking library for .NET https://fakeiteasy.github.io
    • Machine.Specifications - Machine.Specifications (MSpec) is a context/specification framework that removes language noise and simplifies tests.
    • Shouldly - Shouldly is an assertion framework which focuses on giving great error messages when the assertion fails while being simple and terse.
    • BDDfy - BDDfy is the simplest BDD framework EVER!
    • xUnit.net - A free, open source, community-focused unit testing tool for the .NET Framework.
    • AutoFixture - AutoFixture is an open source framework for .NET designed to minimize the 'Arrange' phase of your unit tests
    • Fluent Assertions - A set of .NET extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style test
    • SpecFlow - Binding business requirements to .Net code
    • NUnit - A unit-testing framework for all .NET languages
    • Fuchu - A unit-testing library for F# with tests-as-values which makes DSLs extremely easy to create.
    • NBomber - Very simple load testing framework for Pull and Push scenarios. It's 100% written in F# and targeting .NET Core and full .NET Framework.
    • ArchUnitNET - Simple library for checking the architecture of C# code with a fluent API.
    • Stryker.NET - Mutation testing for .NET Core projects
    • Compare-Net-Objects - Perform a deep compare of any two .NET objects using reflection. Shows the differences between the two objects.
    • Snapshooter - A snapshot testing tool for .NET Core and .NET Framework
    • CsCheck - Random testing library for C#. Including concurrency, causal profiling, regression and performance testing.
    • FluentAutomation - Simple Fluent API for UI Automation
    • Rhino Mocks - Dynamic Mocking Framework for .NET
    • Expecto - A smooth testing framework for F# with tests as values. Unit testing, property based testing, performance testing and stress testing.
    • Verify - Verification tool to enable simple approval of complex models and documents.
    • Canopy - Canopy is a free, open source F# web automation and testing framework
    • ExpressionToCode - Use plain C# syntax in assertions that include both the expression expression and subexpression values in the failure message.
    • NFluent - NFluent is an assertion library which aims to fluent your .NET TDD experience.
    • NBuilder - Rapid generation of test objects
    • ReportPortal - AI-powered Test Automation Dashboard. Acquire, aggregate and analyze test reports to ascertain release health.

  • Tools

    • Fiddler - The free web debugging proxy for any browser, system or platform
    • AnyStatus - A desktop notifications app for monitoring CI/CD pipelines, servers, network, health and metrics. AnyStatus supports Azure DevOps, Jenkins, TeamCity, AppVeyor and more.
    • JSON Formatter and Validator - A blazing fast JSON formatter and validator that won't share JSON with a server.
    • CodeHub - CodeHub is the best way to browse and maintain your GitHub repositories on any iOS device!
    • ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen and share it with a single press of a key. It also allows uploading images, text or other types of files to over 80 supported destinations you can choose from.
    • OctoLinker - Navigate through `project.json`, `packages.config`, `*.props`, `*.targets`, and C#/F#/VB.NET project files efficiently with the OctoLinker browser extension for GitHub.
    • UnitsNet - Makes life working with units of measurement just a little bit better.
    • Netling - A load tester client for easy web testing. It is extremely fast while using little CPU or memory.
    • Fake JSON Server - Fake REST API for prototyping or as a CRUD Back End. No need to define types, uses dynamic typing. Data is stored to a single JSON file. Has authentication, WebSocket notifications, async long running operations, random generation for errors/delays and experimental GraphQL support.
    • posh-dotnet - `PowerShell` tab completion for the [dotnet CLI](https://github.com/dotnet/cli)
    • SmartCode - SmartCode = IDataSource -> IBuildTask -> IOutput => Build Everything!!! (Including [**Code generator**])
    • Myrtille - A native HTML4/5 Remote Desktop Protocol client, HTTP gateway written in C# for .NET
    • NETworkManager - A powerful tool for managing networks and troubleshoot network problems!
    • Papercut - Papercut is an open source (.NET based) test email viewer that runs locally with a built-in SMTP server designed to receive and notify of test email messages.
    • CSharpier - An opinionated code formatter for c# that is based on the [Prettier](https://github.com/prettier/prettier) printing process.
    • Open Live Writer - Blog writer which integrated with WordPress, Blogger, et. al. Open Live Writer makes it easy to write, preview, and post to your blog.
    • Downloader - Fast and reliable multipart downloader with asynchronous progress events for .NET applications.
    • Opserver - Stack Exchange's Monitoring System
    • Visual Studio Uninstaller - Uninstall and clean up all components of Visual Studio.
    • CatLight - Build status notifications for TFS/Jenkins/Travis/Appveyor. Cross-platform desktop app based on .NET Core and Electron. **[Free][Proprietary]**
    • Mockaco - API mock server with fast setup, useful to simulate HTTP responses, leveraging ASP.NET Core features, built-in fake data generation and C# scripting engine powered by Roslyn scripting API.

  • Visual Studio Plugins

    • Nuget Package Manager - NuGet is the package manager for the Microsoft development platform including .NET
    • Resharper - Developer Productivity Tool for Visual Studio **[$]**
    • Productivity Power Tools - A set of extensions to Visual Studio Professional (and above) which improves developer productivity.
    • Tabs Studio - Visual Studio tab manager with multiple tab rows, tab coloring and tab grouping. **[$]**
    • VSColorOutput - Color highlighting for Build, Find and Debug output windows. Custom match patterns and colors can be added.
    • CodeLineage - Easy access to a cumulative diff view between file revisions (supports svn, git, mercurial, perforce).
    • OzCode - OzCode is a Visual Studio Extension which cuts down on debugging time and increases productivity by detecting and isolating bugs, making them easy to fix. **[$]**
    • ViEmu - very powerful Vi/vim emulator for Visual Studio supporting all basic and many advanced features of vi/vim. **[$]**
    • SideWaffle - A collection of Item Templates for Visual Studio 2012/2013/2015 that makes any web developer's life much easier
    • VsVIM - VIM in Visual Studio
    • Unchase.OpenAPI.Connectedservice - A Visual Studio 2017/2019 extension to generate C# (TypeScript) HttpClient (or C# Controllers) code for OpenAPI web service with [NSwag](https://github.com/RicoSuter/NSwag).
    • Roslynator - A collection of 500+ analyzers, refactorings and fixes for C#, powered by Roslyn
    • Web Essentials - Web Essentials extends Visual Studio with lots of new features that web developers have been missing for many years
    • CodeContracts - Source code for the CodeContracts tools for .NET
    • Git Diff Margin - Displays live Git changes of the currently edited file on Visual Studio margin and scroll bar
    • ViEmu - very powerful Vi/vim emulator for Visual Studio supporting all basic and many advanced features of vi/vim. **[$]**
    • Unchase.Odata.Connectedservice - A Visual Studio Connected Service for generating API client code in C# or VB for OData web service.

  • Web Frameworks

    • Coalesce - Coalesce is a framework for rapid-development of ASP.NET Core web applications.
    • Suave.IO - Framework/library/web server that makes you cry tears of joy after finishing your project ahead-of-time when you look at the beautiful code you've written in F#.
    • DotVVM - MVVM framework for people who don't like to write JavaScript, with OWIN and ASP.NET Core support and a free extension for Visual Studio 2015 and 2017.
    • Giraffe - Functional (F#) ASP.NET Core micro framework for building rich web applications
    • IISNode - Host Node.js applications in IIS
    • FubuMVC - A front-controller style MVC framework for .NET
    • ASP.NET MVC - ASP.NET is a free web framework for building great web sites and applications

  • WebSocket

    • Crossertech - Provides a great set of tools for you to build real-time applications on the Microsoft.NET plattform and much more. **[$]**
    • Fleck - Fleck is a WebSocket server implementation in C#. Branched from the Nugget project
    • SuperSocket - SuperSocket is a light weight extensible socket application framework
    • WampSharp - A C# implementation of [The Web Application Messaging Protocol](https://wamp-proto.org/) - a protocol that provides messaging patterns of Remote Procedure Calls and Publish/Subscribe over WebSockets.
    • SignalR - Library for ASP.NET developers that makes it incredibly simple to add real-time web functionality to your applications
    • Websocket-Sharp - A C# implementation of the WebSocket protocol client and server
    • Websocket.Client - A multiplatform wrapper over native C# class ClientWebSocket with built-in reconnection and error handling.
    • NetGain - A high performance WebSocket server library powering Stack Overflow.
    • Websockets.PCL - WebSockets.PCL is a portable class library, profile 259, C# WebSocket implementation.

  • Books

    • .NET Core in Action - teaches how to write applications and libraries with .NET Core. **[$]**
    • ASP.NET Core in Action - teaches how to write web applications with ASP.NET Core. **[$]**
    • Dependency Injection in .NET - injection-principles-practices-patterns) - teaches you to use Dependency Injection to reduce hard-coded dependencies between application components in .NET. **[$]**
    • The Little ASP.NET Core Book - A free, open-source, tutorial-based book aiming to provide a simple introduction to ASP.NET Core.
    • 3rd edition - sharp-in-depth-fourth-edition) - deep dive into the details of the C# language. **[$]**
    • CLR via C# - Dig deep and master the intricacies of the common language runtime, C#, and .NET development. **[$]**
    • Functional Programming in C# - teaches how to best leverage the functional features of the C# language. **[$]**
    • Functional Programming in C#, Second Edition - Real world examples and practical techniques for functional programming in C# without the jargon and theory. **[$]**
    • ASP.NET Core in Action, Second Edition - A comprehensive guide to creating web applications with ASP.NET Core 5.0. **[$]**
    • Entity Framework Core in Action - teaches how to use Entity Framework Core, including lighter weight data access alternatives such as Dapper. **[$]**
    • Blazor in Action - A guide to building UIs and client-side applications using C# and .NET. **[$]**
    • Code Like a Pro in C# - Build on your existing programming skills and upskill to professional-level C# programming. **[$]**
    • ASP.NET Core Security - A practical and hands-on guide to securing web applications built with ASP.NET. **[$]**
    • Microservices in .NET Second Edition - A comprehensive guide to building microservice applications using the .NET stack. **[$]**
    • ASP.NET Core Razor Pages in Action - A comprehensive guide to how to use Razor Pages to create dynamic websites that are easy to test and scale. **[$]**
    • ASP.NET Core Web API - A book about designing and implementing APIs using the REST and GraphQL standards. **[$]**
    • .NET Maui in Action - A book about creating mobile and desktop apps using a common set of .NET tools. **[$]**
    • .NET in Action, Second Edition - An introduction to implementing full-featured, cross-platform professional applications on the Microsoft .NET platform. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**
    • Microservices in .NET Core - A comprehensive guide to building microservice systems using the .NET stack. **[$]**
    • ASP.NET Core Web API - A book about designing and implementing APIs using the REST and GraphQL standards. **[$]**
    • Pro .NET Memory Management - Takes a deep dive into .NET memory management, including comprehensive coverage of how .NET memory works, implementation details, possible pitfalls, and ways to work around them. **[$]**

  • Application Frameworks

    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • ABP - The next generation of the ASP.NET Boilerplate web application framework.
    • ASP.NET Boilerplate - A starting point for new modern ASP.NET MVC web applications with best practices and most popular tools.
    • Orleans - Orleans is a framework that provides a straight-forward approach to building distributed high-scale computing applications, without the need to learn and apply complex concurrency or other scaling patterns
    • CoreFX - The corefx repo contains the library implementation (called "CoreFX") for .NET Core. It includes System.Collections, System.IO, System.Xml and many other components.
    • CSLA .NET - business layer development framework https://cslanet.com/
    • Mono - Open source ECMA CLI, C#, F#, VB and .NET implementation
    • Mono-Addins - Mono.Addins is a generic framework for creating extensible applications, and for creating add-ins which extend those applications
    • peasy - Peasy is a middle tier framework that offers an easy to use and flexible rules engine and was designed to address common challenges such as concurrency handling, transactional support, fault tolerance, threading, scalability, async and multiple client support, and easy testability, all without a huge learning curve!
    • Spring.Net - Spring.NET is an open source application framework that makes building enterprise .NET applications easier
    • DotNetty - DotNetty is a port of Netty, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients.
    • .NET Boxed Framework - .NET Core Extensions and Helper NuGet packages
    • Newbe.Claptrap - This is a set of server-side development frameworks with reactive, event sourcing and Actor pattern as basic theories. On top of this, developers can develop "distributed", "scale out", and "easy to test" application more simply.
    • Plastic - Plastic provides encapsulation of things like Domain, Application Rules, Business Rules or Business Logic in Application. For this, Command pattern is used.
    • Signals - Signals is a .NET5 based framework which focuses on increasing the quality and productivity within development teams by providing them with tools, aspects and processes.
    • AspectCore Framework - AspectCore Framework is an Aspect-Oriented Programming based cross platform framework for .NET Core and .NET Framework. Core support for aspect-interceptor,dependency injection integration , web applications , data validation , and more.
    • HopFramework - HopFramework is a framework to create projects easily applying Domain Driven Design and a lot of patterns to delivery a better solution.
    • Fusion - .NET Core and Blazor library that attempts to dramatically improve the way we implement real-time and high-load services by introducing a novel kind of "computed observables" - immutable, thread-safe, and most importantly, almost invisible for developers. [Samples 1](https://github.com/servicetitan/Stl.Fusion.Samples) [Samples 2](https://github.com/alexyakunin/BoardGames)
    • silky - The Silky framework is designed to help developers quickly build a microservice development framework through simple code and configuration under the .net platform.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.
    • Butterfly Server .NET - Enables defining a Web API and Subscription API that automatically synchronizes datasets across connected clients. Allows building real-time web apps and native apps with minimal effort.

  • HTTP

    • EasyHttp - HTTP library for C#
    • Refit - The automatic type-safe REST library for Xamarin and .NET
    • RestEase - Easy-to-use typesafe REST API client library, which is simple and customisable. Heavily inspired by Refit
    • RestLess - The automatic type-safe-reflectionless REST API client library for .Net Standard.
    • RestSharp - Simple REST and HTTP API client for .NET
    • WebApiClient
    • Tiny.RestClient - Simpliest Fluent REST client for .NET.
    • HttpClientGoodies - utilities for working with `HttpClient`
    • Http.fs - A functional HTTP client for F#.

  • IoC

    • Ninject - The ninja of .NET dependency injectors
    • Autofac - An addictive .NET IoC container
    • Castle Windsor - Castle Windsor is best of breed, mature Inversion of Control container available for .NET and Silverlight
    • DryIoc - Simple, fast all fully featured IoC container.
    • LightInject - A ultra lightweight IoC container
    • Simple Injector - Simple Injector is an easy-to-use Dependency Injection (DI) library for .NET 4+ that supports Silverlight 4+, Windows Phone 8, Windows 8 including Universal apps and Mono.
    • Stashbox - A lightweight, portable dependency injection framework for .NET based solutions.
    • Scrutor - Assembly scanning extensions for Microsoft.Extensions.DependencyInjection.
    • Unity - Lightweight extensible dependency injection container with support for constructor, property, and method call injection
    • TinyIoC - An easy to use, hassle free, Inversion of Control Container for small projects, libraries and beginners alike.
    • Microsoft.Extensions.DependencyInjection - The default IoC container for ASP.NET Core applications.
    • Lamar - A fast IoC container heavily optimized for usage within ASP.NET Core and other .NET server side applications.
    • VS MEF - Managed Extensibility Framework (MEF) implementation used by Visual Studio.

  • Caching

    • Akavache - An asynchronous, persistent key-value store
    • CacheCow - An ASP.NET Web API HTTP caching implementation both on client and server
    • CacheManager - A common interface and abstraction layer for caching.
    • EasyCaching - A caching library that contains basic and some advanced usages of caching which can help handle caching more easier!
    • Cashew - a .NET library for caching responses easily with an `HttpClient` through an API that is simple and elegant yet powerful.
    • Cache Tower - An efficient multi-layered caching system for .NET (In-Memory, Redis, Database, File etc)

  • Trading

    • StockSharp - Trading and algorithmic trading open source platform (stock markets, forex, bitcoins and options). https://stocksharp.com
    • Lean - Lean Engine is an open-source fully managed C# algorithmic trading engine built for desktop and cloud usage. https://www.quantconnect.com/lean/

  • Git Tools

    • GitVersion - Generate a Semantic Version Number based on the state of your Git repository
    • Git Credential Manager for Windows - Helps solving issues of credentials, made by Microsoft
    • posh-git - A PowerShell environment for Git
    • Husky.Net - Git hooks made easy with Husky.Net internal task runner, You can use it to lint your commit messages, run tests, lint code, etc... when you commit or push. supports C# scripts, gitflow hooks, Multiple file states (staged, lastCommit, glob)
    • Bonobo Git Server - Bonobo Git Server for Windows is a web application you can install on your IIS and easily manage and connect to your Git repositories. https://bonobogitserver.com/
    • GitExtensions - GitExtensions is a shell extension, a Visual Studio 2008/2010/2012/2013 plugin and a standalone Git repository tool. https://gitextensions.github.io/
    • GitLink - let's users step through their code hosted on GitHub or BitBucket
    • LibGit2Sharp - LibGit2Sharp brings all the might and speed of libgit2, a native Git implementation, to the managed world of .NET and Mono.
    • GitRead.Net - GitRead.Net is a .NET Standard library which allows you to very easily interrogate a Git repository that you have on disk. It allows you to enumerate the commit log, count lines per file and list files changed by a commit.
    • NGit - NGit is a port of JGit to C#
    • RepoZ - A Git repository information aggregator with Windows Explorer & CLI-enhancements

  • Application Templates

    • ProjectScaffold - A prototypical .NET solution recommended by the F# Foundation---includes file system setup, Paket for dependencies and FAKE for build/test automation. By default, build process also compiles documentation and generates NuGet packages.
    • ASP.NET Core Starter Kit - backend: .NET Core, EF Core, C#; frontend: Babel, Webpack, React, CSS Modules
    • Side-Waffle - Large collection of useful templates for Web and Desktop development.
    • Template10 - Windows 10 templates with design patterns.
    • .NET Boxed Templates - .NET project templates with batteries included, providing the minimum amount of code required to get you going faster.
    • Nucleus - Vue startup application template that uses ASP.NET Core API layered architecture at the back-end and JWT based authentication
    • JHipster.NET
    • Serene - Serenity is an ASP.NET MVC application platform designed to simplify and shorten development of data-centric business applications with a service-based architecture. Serene is a starter template to build Serenity applications.

  • Queue

    • Hangfire - Incredibly easy way to perform fire-and-forget, delayed and recurring tasks inside ASP.NET applications
    • CAP - An EventBus with local persistent message functionality for RabbitMQ or Kafka.
    • MassTransit - MassTransit is lean service bus implementation for building loosely coupled applications using the .NET Framework.
    • Confluent's .NET Client - Confluent's .NET Client for Apache Kafka.
    • NetMQ - NetMQ is 100% native C# port of ZeroMQ
    • RabbitMQ.NET - Implementation of an AMQP client library for C#, and a binding exposing AMQP services via WCF
    • RawRabbit - A modern .NET Core library for RabbitMQ.
    • Rebus - Rebus is a lean service bus implementation for .NET, similar in nature to NServiceBus and MassTransit, only leaner
    • Gofer.NET - Easy C# API for Distributed Background Tasks/Jobs for .NET Core. Inspired by celery for python.
    • Brighter - Command Dispatcher, Processor, and Distributed Task Queue https://www.goparamore.io/
    • Warewolf ESB - An easy to use service bus and microservices platform. Easily build applications and services in a visual IDE.
    • EasyNetQ - An easy to use .NET API for RabbitMQ
    • NServiceBus - The most popular service bus for .NET
    • RestBus - A service-oriented .NET messaging library for RabbitMQ.
    • Kafunk - F# Kafka client from Jet
    • Silverback - A simple but feature-rich message bus for .NET core (supports Kafka, RabbitMQ and MQTT).

  • Blazor

    • Megabit.Blazorise - Blazorise is a component library built on top of Blazor and CSS frameworks like Bootstrap, Bulma and Material. Very easy to use.
    • BootstrapBlazor - A set of enterprise-class UI components based on Bootstrap and Blazor.
    • ant-design-blazor - A set of enterprise-class UI components based on Ant Design and Blazor WebAssembly.
    • MASA.Blazor - A set of enterprise-class UI components based on Material Design and Blazor WebAssembly.

  • Media

    • Xabe.FFmpeg - .NET Standard wrapper for FFmpeg. It allows to process media without know how FFmpeg works, and can be used to pass customized arguments to FFmpeg from C# application. **[$]**
    • NAudio - Playback, decode and encode audio in a variety of file formats such as MP3, MP4, WAV, AIFF, Speex, etc.
    • LibVLCSharp - Xamarin bindings for libvlc, the multimedia framework powering the VLC applications made by VideoLAN.
    • TagLib# - TagLib# (aka taglib-sharp) is a library for reading and writing
    • CSCore - An advanced audio library, supporting playback/recording, decoding/encoding and processing of audio data in realtime (effects, visualizations, ...).
    • SeeShark - Cross-platform camera library for .NET using FFmpeg supporting over 190 pixel formats

  • Cryptography

    • StreamCryptor - Stream encryption & decryption with libsodium and protobuf
    • NaCl.Core - A managed-only cryptography library for .NET which provides modern cryptographic primitives.
    • Paseto.Core - A Paseto (Platform-Agnostic Security Tokens) implementation for .NET
    • Pkcs11Interop - Managed .NET wrapper for unmanaged PKCS#11 libraries that provide access to the cryptographic hardware
    • SecurityDriven.Inferno - .NET crypto library. Professionally audited.
    • CryptoNet - .NET simple crypto library. Native c#.
    • CryptoNet - .NET simple crypto library. Native c#.
    • HashLib - HashLib is a collection of nearly all hash algorithms you've ever seen, it supports almost everything and is very easy to use

  • JavaScript Engines

    • Edge.js - Run .NET and Node.js code in-process on Windows, macOS, and Linux
    • Jint - JavaScript interpreter for .NET which provides full ECMA 5.1 compliance and can run on any .NET platform.
    • Jurassic - A implementation of the ECMAScript language and runtime. It aims to provide the best performing and most standards-compliant implementation of JavaScript for .NET.
    • YantraJS - JavaScript Runtime (Similar to NodeJS) for .NET Standard, compiles JavaScript to IL, support for many ES6 features, generators, CommonJS modules, CSX modules and expression compiler.
    • ClearScript - A library that makes it easy to add scripting to your .NET applications. It currently supports JavaScript (via V8 and JScript) and VBScript.

  • Algorithms and Data structures

    • Algorithmia - Algorithm and data-structure library for .NET 3.5 and up. Algorithmia contains sophisticated algorithms and data-structures like graphs, priority queues, command, undo-redo and more.
    • C# Algorithms - A C# plug-and-play class-library project of standard Data Structures and Algorithms. It contains 35+ Data Structures and 30+ Algorithms designed as Object-Oriented isolated components.
    • Towel - data structures, algorithms, mathematics, metadata, extensions, console, measurements, and other useful stuff

  • Assembly Manipulation

    • Fody - Extensible tool for weaving .NET assemblies.
    • Mono.Cecil - Cecil is a library to generate and inspect programs and libraries in the ECMA CIL form.
    • ILRepack - Open-source alternative to ILMerge.

  • Assets

    • Cassette - Manages .NET web application assets (scripts, css and templates)
    • NodeAssets - Asset Manager for .NET that has live CSS updates using SignalR and can optionally leverage Node.js compilers
    • Bundler - Compile & Minify Less/Sass/Stylus/Css/JS/CoffeeScript/LiveScript files. Integrates with MVC and ServiceStack
    • SquishIt - Lets you *easily* bundle some CSS and JavaScript
    • Bundle Transformer - Modular extension for [Microsoft ASP.NET Web Optimization Framework](https://www.nuget.org/packages/Microsoft.AspNet.Web.Optimization). Its modules supports LESS, Sass, CoffeeScript, TypeScript, Mustache, Handlebars, Autoprefixer along with a bunch of different JS and CSS minifiers.

  • Build Automation

    • Psake - .NET-based build automation tool written in PowerShell
    • Invoke-Build - PowerShell build and test automation tool inspired by Psake.
    • MSBuild - The Microsoft Build Engine (MSBuild) is the build platform for .NET and Visual Studio
    • Cake - Cake (C# Make) is a cross-platform build automation system with a C# DSL.
    • Nake - Magic script-based C# task runner
    • Nuke - Cross-platform build automation system
    • FlubuCore - A cross platform build and deployment automation system for building projects and executing deployment scripts using C# code.
    • FAKE - F# Make, a cross-platform build automation system

  • Blockchain

  • Calendar

  • CLR

    • Runtime - Mono and CoreCLR .NET runtimes, as well as the standard library and some higher level components like `System.Linq` and `System.Text.Json`.

  • Database

    • BrightstarDb - BrightstarDB is a native .NET RDF triple store
    • DBreeze - DBreeze Database is an open-source embedded Key-Value store
    • Event Store - The open-source, functional database with Complex Event Processing in JavaScript
    • RavenDB - A LINQ-enabled document database for .NET
    • Marten - PostgreSQL as a document database and event store for .NET applications
    • Realm Xamarin - A fast, easy-to-use alternative to SQLite & ORMs - https://realm.io/docs/dotnet/latest/
    • Streamstone - Event store for Azure Table Storage
    • Ignite - Distributed in-memory platform: document database with SQL and LINQ support; distributed computations; distributed services and events.
    • Yessql - A .NET document database working on any RDBMS
    • JsonFlatFileDataStore - Simple JSON flat file data store with support for typed and dynamic data
    • Db4o-gpl - Object-oriented database, embedded and remote connections supported.
    • LiteDB - A .NET NoSQL Document Store in a single data file - https://www.litedb.org
    • StringDB - StringDB is a modular, key/value pair archival DB designed to consume tiny amounts of ram & produce tiny databases.

  • Datetime

    • NodaTime - Noda Time is an alternative date and time API for .NET. It helps you to think about your data more clearly, and express operations on that data more precisely. https://nodatime.org/
    • DateTimeExtensions - Common Date Time operations on the form of extensions to `System.DateTime`, including holidays and working days calculations on several culture locales.
    • Exceptionless.DateTimeExtensions - DateTimeRange, Business Day and various `DateTime`, `DateTimeOffset`, `TimeSpan` extension methods.

  • Deployment

    • Unfold - PowerShell-based deployment solution for .NET web applications
    • DbUp - .NET library that helps you to deploy changes to SQL Server databases. It tracks which SQL scripts have been run already, and runs the change scripts that are needed to get your database up to date
    • Octo Pack - Used to build NuGet packages of your application for deployment using tools such as Octopus Deploy
    • yuniql - Free and open source schema versioning and migration tool made with .NET Core. Run migrations with plain SQL, arrange versions in ordinary folders and seed your data from CSV via stand-alone CLI (no CLR needed), Azure Pipelines, Docker or ASP.NET Core code. https://yuniql.io

  • DirectX

    • Vortice.Windows - Cross platform .NET standard libraries for DirectX, WIC, Direct2D1, XInput, XAudio and X3DAudio

  • DLR

    • cmd - C# library to run external programs in a simpler way. Demonstration of "dynamic" features of C#.

  • Documentation

    • Sandcastle - Sandcastle Help File Builder similar to NDoc
    • SourceBrowser - Source browser website generator that powers https://referencesource.microsoft.com
    • Swashbuckle - Seamlessly adds a Swagger to Web API projects.
    • F# Formatting - Tools for documenting F# and C# projects from F# script files, Markdown documents and inline XML or Markdown comments
    • DocFX - Tools for building and publishing API documentation for .NET projects
    • DocNet - Your friendly static documentation generator, using markdown files to build the content.

  • E-Commerce and Payments

    • NopCommerce - nopCommerce. Free open-source e-commerce shopping cart (ASP.NET Core)
    • ServiceStack.Stripe - Typed .NET clients for stripe.com REST APIs
    • SmartStoreNET - Free ASP.NET MVC e-commerce Shopping Cart Solution
    • Stripe.Net - Stripe.net is a full service .NET API for https://stripe.com/
    • Virto Commerce - Virto Commerce is the second generation release and is the only enterprise level e-commerce product fully available under Open Source license. Virto Commerce is based on .NET 4.5 with extensive use of MVC, IoC, EF, Azure, AngularJS and many other cutting edge technologies. It can be deployed in Microsoft Cloud (Azure), Amazon Web Services (AWS) and on-premise. https://virtocommerce.com
    • SimplCommerce - Super simple ecommerce system built on .NET Core. Simple to use and easy to customize. Thanks to .NET Core, you can run the SimplCommerce on Windows, Linux. With various RDBMS: Microsoft SQL Server, PostgreSQL, MySQL
    • GrandNode - Headless, multi-vendor, multi-tenant, the most advanced open source e-commerce platform based on .NET Core 5.0 and MongoDB.
    • Square - The official SDK for Square payments and other Square APIs.
    • Adyen - The official Adyen Payment API Library for .NET

  • Environment Management

    • Dotnet CLI - The cross-platform .NET Core command-line toolchain utility.

  • ETL

    • Cinchoo ETL - ETL Framework for .NET (Read / Write CSV, Flat, Xml, JSON, Key-Value formatted files)
    • Reactive ETL - Reactive ETL is a rewrite of Rhino ETL using the reactive extensions for .NET

  • Exceptions

  • Functional programming

    • Curryfy - Provides strongly typed extensions methods for C# delegates to take advantages of functional programming techniques, like currying and partial application.
    • language-ext - This library uses and abuses the features of C# 6+ to provide a functional 'Base class library', that, if you squint, can look like extensions to the language itself. It also includes an 'Erlang like' process system (actors) that can optionally persist messages and state to Redis (note you can use it without Redis for in-app messaging). The process system additionally supports Rx streams of messages and state allowing for a complete system of reactive events and message dispatch.
    • Optional - A robust option type for C#
    • Optuple - .NET Standard Library for giving `(bool, T)` Option-like semantics in a non-obtrusive way; this is, there is no new option type dependency for a library or its users.
    • MoreLinq - Provides extra methods to LINQ to Objects.
    • JFlepp.Maybe - A Maybe type for C#, aimed as an idiomatic port of the option type in F# to C#

  • RPC

    • gRPCurl - gRPCurl is a command-line tool that lets you interact with gRPC servers. It's basically curl for gRPC servers.
    • gRPC - us/aspnet/core/grpc)
    • BloomRPC - BloomRPC aims to provide the simplest and most efficient developer experience for exploring and querying your GRPC services.
    • gRPC UI - gRPC UI is a command-line tool that lets you interact with gRPC servers via a browser. It's sort of like Postman, but for gRPC APIs instead of REST.
    • CoreRPC - Extensible library for WCF-like RPC targeting netstandard1.3. Compatible with .NET, Mono and .NET Core.

  • Interactive programming

    • .NET Interactive - .NET Interactive takes the power of .NET and embeds it into your interactive experiences.

  • Web Servers

    • EmbedIO - Web server built on Mono and cross-platform
    • XSP - Mono's ASP.NET hosting server. This module includes an Apache Module, a FastCGI module that can be hooked to other web servers as well as a standalone server used for testing (similar to Microsoft's Cassini)

  • Minification

    • Web Markup Minifier - .NET library that contains a set of markup minifiers. The objective of this project is to improve the performance of web applications by reducing the size of HTML, XHTML and XML code.
    • CompressedStaticFiles - Send compressed static files to the browser without having to compress on demand, also has support for sending more advanced image formats when the browser indicates that i has support for it.
    • Microsoft Ajax Minifier - Contains JS and CSS minifiers which have a highest performance, because its have been specifically designed for .NET. Optionally produce Source Maps for JS code.

  • Parser Library

    • FParsec - A parser combinator library for F#
    • Pidgin - A lightweight, fast and flexible parsing library for C#, developed at Stack Overflow
    • Sprache - A simple, lightweight library for constructing parsers directly in C# code
    • Superpower - A C# parser construction toolkit with high-quality error reporting
    • CSLY - A light embedded C# lexer/parser generator.

  • Interoperability

    • CppSharp - Tools to surface C++ APIs to C#
    • Pyrolite - This library allows your Java or .NET program to interface very easily with
    • pythonnet - Python and .NET interop framework
    • PInvoke Interop Assistant - Converts C to managed P/Invoke signatures or verse visa.
    • pinvoke - A library containing P/Invoke code for latest Windows OS.
    • Sharpen - Sharpen is an Eclipse plugin created by db4o that allows you to convert your Java project into C#
    • CXXI - C++ interop framework
    • LegacyWrapper - LegacyWrapper uses a wrapper process to call DLLs from a process of the opposing architecture (x86 or AMD64).

  • Reactive Programming

    • Dynamic Data - Reactive Extensions (Rx) for collections
    • Rx.NET - The Reactive Extensions (Rx) is a library for composing asynchronous and event-based programs using observable sequences and LINQ-style query operators
    • ObsevableComputations - A cross-platform .NET library for computations whose arguments and results are objects that implement INotifyPropertyChanged and INotifyCollectionChanged (ObservableCollection) interfaces.

  • Mail

    • FluentEmail - A fluent wrapper for System.Net.Mail with Razor templating support.
    • MailKit - A complete cross-platform mail stack including IMAP, POP3, SMTP, authentication and more. Built on top of MimeKit.
    • MimeKit - A cross-platform .NET MIME creation and parser library with support for S/MIME, PGP, TNEF and Unix mbox spools.
    • PreMailer.Net - C# library that moves your stylesheets to inline style attributes, for maximum compatibility with e-mail clients.
    • StrongGrid - Client for SendGrid's v3 API. Not only allows you to send emails, but also allows you to bulk import contacts, manage lists and segments, create custom fields for your lists, etc. Also includes a parser for SendGrid Webhooks.

  • Object to object mapping

    • AgileMapper - A zero-configuration Object-Object mapper supporting .NET Standard 1.0
    • AutoMapper - A convention-based object-object mapper in .NET. https://automapper.org
    • ExpressMapper - A lightweight, lighting fast .NET mapper to map one type of object(s) to another in automated and easy way. ExpressMapper relies completely on the expression trees.
    • Mapster - A high performance object mapper in .net
    • TinyMapper - A tiny and quick object mapper for .NET.

  • Profiler

    • MiniProfiler - A simple but effective mini-profiler for ASP.NET websites
    • Unchase.FluentPerformanceMeter - An open-source and cross-platform .Net Standard 2.0 library that is designed for the method’s performance measurement.
    • Glimpse - The open source diagnostics platform for the web

  • State machines

    • LiquidState - Efficient asynchronous and synchronous state machines for .NET
    • Stateless - Create state machines and lightweight state machine-based workflows directly in .NET code
    • Automatonymous - A state machine library for .NET - allows you to write fluent style state machines

  • Metrics

  • Serialization

    • Bond - cross-platform framework for working with schematized data. It supports cross-language de/serialization and powerful generic mechanisms for efficiently manipulating data.
    • Jil - Fast .NET JSON serializer, built on Sigil (used by StackOverflow)
    • Msgpack-Cli - MessagePack implementation for Common Language Infrastructure
    • Json.NET - Popular high-performance JSON framework for .NET
    • ServiceStack.Text - JSON, JSV and CSV Text Serializers used in servicestack.net
    • Utf8Json - Fast and Zero Allocation JSON Serializer for C#(.NET, .NET Core, Unity and Xamarin), this serializer write/read directly to UTF8 binary so boostup performance.
    • FileHelpers - free and easy to use .NET library to import or export data from fixed length or delimited records in files, strings or streams.
    • Hyperion - A high performance polymorphic serializer for the .NET framework.
    • Protobuf.NET - Protocol buffers is the name of the binary serialization format used by Google for much of their data communications
    • ObjectDumper.NET - Serializes in-memory object to C# code.
    • FsPickler - A fast multi-format message serializer for .NET
    • Ceras - Ceras is a binary serializer. It converts any object into a byte[] and back. It goes above and beyond in terms of features, speed, and comfort. Supports reference loops, large/complicated inheritance chains, splitting objects into parts and more.
    • CsvExport - Very simple & lightweight CSV exporter, Excel friendly, escapes text & quotes etc.
    • ProtoBuf - Generate C# code for protocol buffer serialization from a .proto specification.
    • FlatSharp - Fast, idiomatic FlatBuffers implementation. Use .fbs files or attributes.
    • F# Data - F# type providers for accessing XML, JSON, CSV and HTML files (based on sample documents) and for accessing WorldBank data
    • Migrant - Fast and flexible serialization framework usable on undecorated classes.

  • Template Engine

    • DotLiquid - C# port of the Ruby Liquid templating language
    • RazorLight - Open source template engine based on Microsoft's Razor parsing engine supporting .NET Standard 2.0
    • Nustache - Open source library for logic-less templates
    • RazorEngine - Open source templating engine based on Microsoft's Razor parsing engine
    • Mustache Sharp - An extension of the mustache text template engine for .NET.
    • Stubble - Trimmed down {{mustache}} templates in .NET. Successor of Nustache.

  • Windows Services

    • TopShelf - An easy service hosting framework for building Windows services using .NET

  • UI Automation

    • FlaUI - FlaUI is a .NET library which helps with automated UI testing of Windows applications (Win32, WinForms, WPF, Store Apps, ...).
    • PuppeteerSharp - Puppeteer Sharp is a .NET port of the official Node.JS Puppeteer API.
    • Atata - Automated web testing full featured framework based on Selenium WebDriver.
    • PuppeteerSharp.Contrib - Contributions to Puppeteer Sharp that provides a convenient way to write readable and robust browser tests.

  • Push Notifications

    • PushSharp - A server-side library for sending Push Notifications to iOS, OSX, Android, Chrome, Windows Phone, Windows 8, Blackberry, and Amazon devices.

  • WPF

    • WPF - WPF is a .NET Core UI framework for building Windows desktop applications.
    • Extended WPF Toolkit™ - A rich collection of controls, components and utilities for creating WPF applications

  • Internationalization

    • i18n - Smart internationalization for ASP.NET MVC
    • ResX Resource Manager - The most popular free tool to localize all kind of applications with resx-based resources.
    • MessageFormat.NET - ICU MessageFormat implementation in .NET lets you write contextual UI messages (PCL library)

  • SMS and Phone calls

    • Twilio-csharp - A C#/.NET Library for sending and receiving phone calls and text messages with Twilio.

  • Networking

    • NetCoreServer - Ultra fast and low latency asynchronous socket server & client C# .NET Core library with support TCP, SSL, UDP, HTTP, HTTPS, WebSocket protocols and 10K connections problem solution (NETStandard).
    • SharpPcap - Fully managed, cross platform (Windows, Mac, Linux) .NET library for capturing packets from live and file based devices.

  • Strong Naming

    • .NET Assembly Strong-Name Signer - Utility software to strong-name sign .NET assemblies, including assemblies you do not have the source code for.
    • Strong Namer - Automatically add strong names to referenced assemblies which do not already have a strong name. This will allow you to reference and use (NuGet packages with) assemblies which are not strong named from your projects that do use a strong name.

  • Real-time Communications

    • SIPSorcery - A cross platform C# .NET library supporting SIP, VoIP and WebRTC.

  • Micro Framework

  • Regular Expression

    • RegExtract - Clean & simple idiomatic C# RegEx-based line parser that emits strongly typed results.

  • Query Builders

    • SqlKata - Elegant SQL query builder, that supports complex queries, joins, sub queries, nested where conditions, vendor engine targets and more
Programming Languages
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