Stars
The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.
Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.
EF Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations.
.NET (WPF and Windows Forms) bindings for the Chromium Embedded Framework
Git Extensions is a standalone UI tool for managing git repositories. It also integrates with Windows Explorer and Microsoft Visual Studio (2015/2017/2019).
Prism is a framework for building loosely coupled, maintainable, and testable XAML applications in WPF, Xamarin Forms, and Uno / Win UI Applications..
Cosmos is an operating system "construction kit". Build your own OS using managed languages such as C#, VB.NET, and more!
A cross-platform C# editor based on Roslyn and AvalonEdit
#develop (short for SharpDevelop) is a free IDE for .NET programming languages.
The WPF-based text editor component used in SharpDevelop
Statiq Web is a flexible static site generator written in .NET.
A port of Clojure to the CLR, part of the Clojure project
A set of tools for graph layout and viewing
Source browser website generator that powers https://source.dot.net, https://referencesource.microsoft.com and https://sourceroslyn.io
Gemini is an IDE framework similar in concept to the Visual Studio Shell. It uses AvalonDock and has an MVVM architecture based on Caliburn Micro.
Implementation of CommonMark specification in C# for converting Markdown documents to HTML. Optimized for maximum performance and portability.
Static interface to dynamic implementation (duck casting). Uses the DLR combined with Reflect.Emit.
A lightweight .NET library to download YouTube videos.
Entity Framework Effort is a powerful tool that enables a convenient way to create automated tests for Entity Framework based applications.
Roslyn based csc.exe and aspnet_compiler.exe replacement with metaprogramming hooks for ASP.NET MVC projects from the pre-DNX era
Free Infragistics themes for WPF and Silverlight Microsoft controls. This includes the Infragistics IG Theme, Metro Theme, Metro Dark Theme, Office 2010 Blue Theme, and Office 2013 Theme.
Embed the Visual Studio editor & theme architecture in your own programs
Bot for the browsergame Grepolis 2 written in C#
An aspect-weaving library for use with Fody. Still in the prototype stage.