What is the .NET Foundation?

An Independent Non-Profit Organization

The .NET Foundation is a 503(c).6 non-profit organization set up to support an innovative, commercially-friendly, open source ecosystem around an open source .NET platform.

.NET Foundation Projects

The .NET Foundation has a growing list of projects that benefit through this open source foundation with commercially friendly IP, copyright terms and licenses.

Supporting the .NET Developer Community

The .NET Foundation works with Microsoft and the broader industry to increase the exposure of open source projects in the .NET community and the .NET Foundation. The .NET Foundation provides access to these resources to projects and looks to promote the activities of our communities.

.NET News and Blogs

Announcing .NET 4.7.1 Tools for the Cloud

Today we are releasing a set of providers for ASP.NET 4.7.

Announcing the Windows Compatibility Pack for .NET Core

Porting existing code to .NET Core used to be quite hard because the available API set was very small. In .NET Core 2.0,

Introducing Tensor for multi-dimensional Machine Learning and AI data

Overview Tensor is an exchange type for homogenous multi-dimensional data for 1 to N dimensions.

Introducing Nullable Reference Types in C#

Today we released a prototype of a C# feature called “nullable reference types“,

Announcing F# support for .NET Core and .NET Standard projects in Visual Studio

We’re pleased to announce that Visual Studio 2017 15.5 Preview 4 now supports F# projects targeting .NET Core, .

Events and Meetups

DotNet Bangalore (.net, Azure and Microsoft technologies)

We're have exciting news you guys!Instead of our regular DotNetBlr Meetup,

New York City F# User Group

If you're interested in this event, please RSVP at the Jet Meetup site:  https://www.meetup.

The Windows Developer User Group

November 2017 Meetup of The Windows Developer User Group: Alexa - Come Work for Me!Details @ http:

Brisbane .NET User Group

For our November Meetup, we will be running a series of lighting talks.

Wrocław .NET User Group

Zapraszamy na 103. spotkanie Wrocławskiej Grupy .NET. Tematami nadchodzącego spotkania będą:

.NET South East

Please arrive from 6:30pm, the talk will start at 7pm.

NYC Mobile .NET Developers Group

How can you make sure that your system is responsive,

New York ALT.NET Software Development Group

This month's meeting will be a joint-venture between our group and the NYC Mobile .

Perth MS Cloud Computing User Group

Azure Event Grid is the most recently announced platform service in Azure.

A large and growing ecosystem




member projects


developers contributing


companies contributing

Why .NET?

  • Samsung is embracing .NET because it is a completely open source project.

  • ASP.NET Core is open source, that allows us to contribute back to it if we have any performance issues which Microsoft review and together we make a better product.

    Ben Adams, Illyriad Games
  • Being able to develop a vast amount of Xamarin code, most of it only once, that serves multiple platforms is a great efficiency benefit for years to come.

    Michele Ivy, UPS
  • Using the same-size server, we were able to go from 1,000 requests per second per node with Node.js to 20,000 requests per second with .NET Core.

    John-Daniel Trask, Raygun CEO

© 2017 .NET Foundation and Contributors.