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awesome-dotnet

https://github.com/YinfengWang/awesome-dotnet

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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.
- Ether.Network - Ether.Network is an open source networking library that allow developers to create simple, fast and scalable socket server or client applications over the TCP/IP protocol.
- 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.
- .NET Boxed Framework - .NET Core Extensions and Helper NuGet packages
- ASP.NET Boilerplate - A starting point for new modern ASP.NET MVC web applications with best practices and most popular tools.
- ABP - The next generation of the ASP.NET Boilerplate web application framework.
- 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.
- 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.
- 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.
- 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
- 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.
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
- Ocelot - .NET core API Gateway
Application Templates
- MVC.Template - ASP.NET Core MVC project starter template.
- .NET Boxed Templates - .NET project templates with batteries included, providing the minimum amount of code required to get you going faster.
- ASP.NET Core Starter Kit - backend: .NET Core, EF Core, C#; frontend: Babel, Webpack, React, CSS Modules
- 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.
- Side-Waffle - Large collection of useful templates for Web and Desktop development.
- Template10 - Windows 10 templates with design patterns.
- Nucleus - Vue startup application template that uses ASP.NET Core API layered architecture at the back-end and JWT based authentication
- 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.
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
Books
- .NET Core in Action - teaches how to write applications and libraries with .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. **[$]**
- Functional Programming in C# - teaches how to best leverage the functional features of the C# language. **[$]**
- Microservices in .NET Core - shows you how to build maintainable, secure and operations-friendly microservices using Nancy and .NET Core. **[$]**
- Dependency Injection in .NET - injection-principles-practices-patterns) - teaches you to use Dependency Injection to reduce hard-coded dependencies between application components in .NET. **[$]**
- ASP.NET Core in Action - teaches how to write web applications with ASP.NET Core. **[$]**
- Entity Framework Core in Action - teaches how to use Entity Framework Core, including lighter weight data access alternatives such as Dapper. **[$]**
- The Little ASP.NET Core Book - A free, open-source, tutorial-based book aiming to provide a simple introduction to ASP.NET Core.
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.
Caching
- CacheAdapter - Another common cache abstraction layer for caching with enhanced cache API usage.
- CacheCow - An ASP.NET Web API HTTP caching implementation both on client and server
- CacheManager - A common interface and abstraction layer for caching.
- Cashew - a .NET library for caching responses easily with an `HttpClient` through an API that is simple and elegant yet powerful.
- Akavache - An asynchronous, persistent key-value store
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
- Argu - Declarative CLI argument & XML configuration parser for F# applications.
- 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.
- 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
- 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+.
- Fluent Command Line Parser - A simple, strongly typed .NET C# command-line parser library using a fluent easy to use interface
- Gui.cs - Terminal UI toolkit for .NET.
- 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
- 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#.
CMS
- Piranha CMS - Piranha is the fun, fast and lightweight .NET framework for developing cms-based web applications with an extra bite. It's built on ASP.NET MVC and Web Pages and is fully compatible with both Visual Studio and WebMatrix. https://piranhacms.org
- BetterCMS - Open Source .NET Intuitive User Interface for Developer and Publisher
- 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
- 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.
- 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
- BlogEngine.NET - Simple but full featured ASP.NET blog
Code Analysis and Metrics
- CodeMaid - Visual studio extension to cleanup, dig through and simplify C#, C++, F#, VB, PHP, JSON, XAML, XML, ASP, HTML, CSS, LESS, SCSS, JavaScript and TypeScript coding.
- StyleCop - StyleCop analyzes C# source code to enforce a set of style and consistency rules
- .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.
- 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.
- AspNet.Metrics - Capturing CLR, application-level web request metrics. Middleware and extensions using Metrics-Net
- BenchmarkDotNet - Powerful .NET library for benchmarking.
- NsDepCop - Static code analysis tool to enforce namespace dependency rules in C# projects.
- Codinion - Enhanced syntax highlighting for C# and some other "Visual" features. **[$]**
Code Snippets
- .NET Fiddle - Write, compile and run C#, F# and VB code in the browser. The .Net equivalent of JSFiddle.
- Gistlyn - Create, run and share your executable C# GitHub Gists.
- TryRoslyn - Run C# code using different branches and versions of Roslyn.
Compilers, Transpilers and Languages
- Bridge.NET - Open Source C# to JavaScript Compiler https://bridge.net/
- Hybridizer - CIL (C#, VB.Net, F#) to CUDA compiler. **[$]**
- ClojureCLR - A port of Clojure to the CLR, part of the Clojure project
- JSIL - CIL to JavaScript Compiler http://jsil.org/
- Mond - A dynamically typed scripting language written in C# with a REPL, debugger, and simple embedding API.
- 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.
- P - P is a language for asynchronous event-driven programming.
- 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.
- 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.
- 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.
- Fable - F# to JavaScript Compiler
- LinqOptimizer - An automatic query optimizer-compiler for Sequential and Parallel LINQ
- 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.
- IronScheme - R6RS Scheme compiler, runtime and many standard libraries
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#.
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 **[$]**
- MyGet - Continuous Integration and Deployment, Hosted Package Repository for NuGet, NPM, Bower and VSIX **[$]**
Cryptography
- libsodium-net - libsodium for .NET - A secure cryptographic library
- Pkcs11Interop - Managed .NET wrapper for unmanaged PKCS#11 libraries that provide access to the cryptographic hardware
- StreamCryptor - Stream encryption & decryption with libsodium and protobuf
- SecurityDriven.Inferno - .NET crypto library. Professionally audited.
- BouncyCastle - Together with the .Net System.Security.Cryptography, the reference implementation for cryptographic algorithms on the CLR.
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
- RethinkDb.Driver - A RethinkDB database driver in C# striving for 100% ReQL API compatibility and completeness.
Decompilation
- ILSpy - ILSpy is the open-source .NET assembly browser and decompiler
- JustDecompile Engine - The decompilation engine of [JustDecompile](https://www.telerik.com/products/decompiler.aspx)
- 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]**
Distributed Computing
- MBrace - Integrated Data Scripting for the Cloud
- Foundatio - Pluggable foundation blocks for building distributed apps.
- 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 avaiable for F# called Orleankka.FSharp.
- 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.
- 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.
E-Commerce and Payments
- Paypal Merchant SDK - Official PayPal Merchant SDK for .NET
- NopCommerce - nopCommerce. Free open-source e-commerce shopping cart (ASP.NET Core)
- ServiceStack.Stripe - Typed .NET clients for stripe.com REST APIs
- 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 - GrandNode is a functional cross-platform e-commerce solution developed for the most demanding users. You are able to run it on any system - Linux, Windows, Mac. GrandNode supports Docker, so you can install it with Docker for Linux containers. Scalable e-commerce solution which can be adapted in any company independently from company size or industry.
- Square - The official SDK for Square payments and other Square APIs.
- SmartStoreNET - Free ASP.NET MVC e-commerce Shopping Cart Solution https://www.smartstore.com/en/net
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.
Game
- 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
- 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
- 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]**
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.
- 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.
- NetTopologySuite
- NetTopologySuite
GUI
- DockPanelSuite - The Visual Studio inspired docking library for .NET WinForms
- MaterialDesignInXamlToolkit - Toolkit for creating Material Design styled WPF apps
- 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.
HTML and CSS
- HtmlAgilityPack - an agile HTML parser that builds a read/write DOM and supports plain XPath or XSLT
- FluentBootstrap - Makes the Bootstrap CSS framework easier to use from ASP.NET MVC or WebPages.
IDE
- Visual Studio Express - The free lightweight version of Visual Studio for .NET programming.
- Visual Studio Community - A full-featured IDE
- Visual Studio Code - Excellent open source editor from Microsoft, based on Electron.
- Rider - A cross-platform C# IDE based on the IntelliJ platform and ReSharper
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.
Install tools
- Wax - An interactive editor for WiX projects.
IoC
- StructureMap - The original IoC/DI Container for .Net
- Ninject - The ninja of .NET dependency injectors
Logging
- ELMAH - Official ELMAH site
- 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.
- 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][$]**
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
Markdown Processors
- MarkdownSharp - Open source C# implementation of Markdown processor, as featured on Stack Overflow.
Mathematics
- MathNet - Math.NET is an open source initiative to build and maintain toolkits covering fundamental mathematics, targetting advanced but also every day needs of .NET developers
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.
MVVM
- 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.
ORM
- NHibernate - NHibernate Object Relational Mapper
Package Management
- NuGet - The .NET package manager
Protocols
- 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
Search
- Lucene.net - Lucene.Net is a port of the Lucene search engine library, written in C# and targeted at .NET runtime users
State machines
- Appccelerate - State Machine - A powerful state machine library - configured with a fluent API and synchrounous and asynchronous state transition support
Static Site Generators
- Wyam - A simple to use, highly modular, and extremely configurable static content generator
Style Guide
- C# Style Guide - StackOverflow Q & A on style guides
Testing
- NCrunch - An automated continuous & concurrent testing tool for Visual Studio. **[$]**
- NSubstitute - A friendly substitute for .NET mocking frameworks
Tools
- Fiddler - The free web debugging proxy for any browser, system or platform
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 **[$]**
- Refactoring Essentials - Open source extension for C# and VB.NET refactorings, including code best practice analyzers.
- Productivity Power Tools - A set of extensions to Visual Studio Professional (and above) which improves developer productivity.
- VSColorOutput - Color highlighting for Build, Find and Debug output windows. Custom match patterns and colors can be added.
- Developer Assistant - Developer Assistant for Visual Studio enables developers to find and reuse over 21 million code snippets and code sample projects from within the Visual Studio IDE.
- CodeLineage - Easy access to a cumulative diff view between file revisions (supports svn, git, mercurial, perforce).
- OzCode - OzCode is a Visual Studio Extension which cuts down on debugging time and increases productivity by detecting and isolating bugs, making them easy to fix. **[$]**
- SideWaffle - A collection of Item Templates for Visual Studio 2012/2013 that makes any web developer's life much easier
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#.
WebSocket
- Crossertech - Provides a great set of tools for you to build real-time applications on the Microsoft.NET plattform and much more. **[$]**
Parser Library
- Awesome .NET Core - A collection of awesome .NET core libraries, tools, frameworks and software
- awesome-ddd - A curated list of Domain-Driven Design (DDD), Command Query Responsibility Segregation (CQRS), Event Sourcing, and Event Storming resources
- Awesome Unity - A categorized community-driven collection of high-quality awesome Unity assets, projects, and resources.
- Awesome Xamarin - A collection of interesting libraries/tools for Xamarin mobile projects.
- Awesome Roslyn - A curated list of awesome Roslyn books, tutorials, open source projects, analyzers, code fixes, and refactorings.
- Weekly C# Digest - Weekly email newsletter with manually curated top 5 links from the .NET community.
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.
Assembly Manipulation
- Fody - Extensible tool for weaving .NET assemblies.
- ILRepack - Open-source alternative to ILMerge.
- Mono.Cecil - Cecil is a library to generate and inspect programs and libraries in the ECMA CIL form.
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
- 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.
- 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
Build Automation
- Psake - .NET-based build automation tool written in PowerShell
- Invoke-Build - PowerShell build and test automation tool inspired by Psake.
- 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.
CLR
- CoreCLR - The coreclr repo contains the complete runtime implementation (called "CoreCLR") for .NET Core. It includes RyuJIT, the .NET GC, native interop and many other components.
Database
- BrightstarDb - BrightstarDB is a native .NET RDF triple store
- Event Store - The open-source, functional database with Complex Event Processing in JavaScript. https://eventstore.org/
- LiteDB - A .NET NoSQL Document Store in a single data file - https://www.litedb.org
- 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
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
DirectX
- SharpDX - SharpDX is an open-source project delivering the full DirectX API for .NET on all Windows platforms, allowing the development of high performance game, 2D and 3D graphics rendering as well as real-time sound application.
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
- SharpDox - A C# documentation tool
- SourceBrowser - Source browser website generator that powers https://referencesource.microsoft.com and http://source.roslyn.io
- 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.
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)
Exceptions
- Exceptionless - Exceptionless .NET Client
Extensions
- Z.ExtensionMethods - Over a 1000 useful extension methods
Functional programming
- 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#
Git Tools
- 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
- GitVersion - Generate a Semantic Version Number based on the state of your Git repository
- 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#
- posh-git - A PowerShell environment for Git
- RepoZ - A Git repository information aggregator with Windows Explorer & CLI-enhancements
- Git Credential Manager for Windows - Helps solving issues of credentials, made by Microsoft
Graphics
- 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
- Live-Charts - An Animated, MVVM oriented and modern charting library
- 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.
Serialization
- F# Data - F# type providers for accessing XML, JSON, CSV and HTML files (based on sample documents) and for accessing WorldBank data
PDF
- 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.**[$]**

Programming Languages

C# 155 F# 7 JavaScript 5 PowerShell 4 HTML 2 Scheme 1 c# 1 Visual Basic 1 Java 1 Python 1

Ecosyste.ms: Awesome

awesome-dotnet

Application Frameworks

API

Application Templates

Artificial Intelligence

Authentication and Authorization

Books

Business Intelligence

Caching

CLI

CMS

Code Analysis and Metrics

Code Snippets

Compilers, Transpilers and Languages

Compression

Continuous Integration

Cryptography

Database Drivers

Decompilation

Distributed Computing

E-Commerce and Payments

Event aggregator and messenger

Game

GIS

GUI

HTML and CSS

IDE

Image Processing

Install tools

IoC

Logging

Machine Learning and Data Science

Markdown Processors

Mathematics

Misc

MVVM

ORM

Package Management

Protocols

Scheduling

Search

State machines

Static Site Generators

Style Guide

Testing

Tools

Visual Studio Plugins

Web Frameworks

WebSocket

Parser Library

Algorithms and Data structures

Assembly Manipulation

Assets

Build Automation

CLR

Database

Datetime

Deployment

DirectX

DLR

Documentation

Environment Management

ETL

Exceptions

Extensions

Functional programming

Git Tools

Graphics

Serialization

PDF