Projects under the stewardship of the .NET Foundation currently include the .NET Compiler Platform ("Roslyn") as well as the ASP.NET family of projects, .NET Core, Xamarin Forms along with popular .NET open source frameworks like xUnit and Reactive Extensions. We’re actively engaged in supporting open source projects in the .NET ecosystem, you can learn more about our work or see our blog for the latest announcements.

Pick a project below to learn more about it and how to contribute:

  • standard

    This repo is building the .NET Standard

  • Mvc

    ASP.NET Core MVC is a model view controller framework for building dynamic web sites with clean separation of concerns, including the merged MVC, Web API, and Web Pages w/ Razor.

  • System.Drawing

    Mono open source ECMA CLI, C# and .NET implementation.

  • xamarin-macios

    Bridges the worlds of .NET with the native APIs of Mac, iOS, tvOS, and watchOS.

  • Prism

    Prism is a framework for building loosely coupled, maintainable, and testable XAML applications in WPF, Windows 10 UWP, and Xamarin Forms.

  • wcf

    This repo contains the client-oriented WCF libraries that enable applications built on .NET Core to communicate with WCF services.

  • Umbraco-CMS

    The simple, flexible and friendly ASP.NET CMS used by more than 390.000 websites

  • AspNetKatana

    Microsoft's OWIN implementation, the Katana project

  • docfx

    Tools for building and publishing API documentation for .NET projects

  • Docs

    Documentation for ASP.NET and ASP.NET Core

  • monodevelop

    MonoDevelop is a cross platform IDE mostly aimed at Mono/.NET developers

  • corert

    This repo contains CoreRT, a .NET Core runtime optimized for AOT (ahead of time compilation) scenarios, with the accompanying .NET Native compiler toolchain.

  • xamarin-android

    Xamarin.Android provides open-source bindings of the Android SDK for use with .NET managed languages such as C#

  • xunit

    xUnit.net is a free, open source, community-focused unit testing tool for the .NET Framework.

  • corefxlab

    This repo is for experimentation and exploring new ideas that may or may not make it into the main corefx repo.

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