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:

  • orleans

    Orleans - Distributed Virtual Actor Model

  • 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.

  • standard

    This repo is building the .NET Standard

  • System.Drawing

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

  • SignalR

    Incredibly simple real-time web for ASP.NET Core

  • Prism

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

  • xamarin-android

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

  • xamarin-macios

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

  • Docs

    Documentation for ASP.NET and ASP.NET Core

  • wcf

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

  • corert

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

  • Umbraco-CMS

    The simple, flexible and friendly ASP.NET CMS used by more than 400.000 websites

  • cake

    Cake (C# Make) is a cross platform build automation system.

  • Embeddinator-4000

    Tools to turn .NET libraries into native libraries that can be consumed on Android, iOS, Mac, Linux and other platforms.

  • corefxlab

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

  • docs

    This repository contains .NET Documentation.

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