Welcome to the .NET Foundation

We foster open development, collaboration and community engagement on the .NET platform. The .NET Foundation is the steward of a growing collection of open source technologies for.NET, Microsoft’s comprehensive development framework. The .NET Foundation includes popular open source .NET projects such as the .NET Compiler Platform (“Roslyn”), ASP.NET MVC, Xamarin's Mimekit and Mailkit, and many others.


Announced at the Build 2014 conference, the .NET Foundation was created as an independent forum to foster open development and collaboration around the growing collection of open source technologies for .NET.

Scott Guthrie introduces the .NET Foundation at Build 2014.

In the upcoming weeks and months, the .NET Foundation will be inviting a variety of companies and community leaders to participate, including the many people who have already contacted the foundation to express their interest in participating. We look forward to working together!

See our News page and FAQ for more information on the .NET Foundation.