|Founded||March 31, 2014|
|Legal status||501(c)(6) organization|
|Headquarters||Redmond, Washington, U.S.|
The .NET Foundation is an organization incorporated on March 31, 2014, by Microsoft to improve open-source software development and collaboration around the .NET Framework. It was launched at the annual Build 2014 conference held by Microsoft. The foundation is license-agnostic, and projects that come to the foundation are free to choose any open-source license, as defined by the Open Source Initiative (OSI). The foundation uses GitHub to host the open-source projects it manages.
Anyone who has contributed to .NET Foundation projects can apply to be a .NET Foundation member. Members can vote in elections for the board of the directors and will preserve the health of the organization.
The foundation began with twenty-four projects under its stewardship including .NET Compiler Platform ("Roslyn") and the ASP.NET family of open-source projects, both open-sourced by Microsoft Open Technologies, Inc. (MS Open Tech). Xamarin contributed six of its projects including the open source email libraries MimeKit and MailKit. As of April 2019 , it is the steward of 56 active projects, including: .NET Core, Entity Framework (EF), Managed Extensibility Framework (MEF), Umbraco, MSBuild, NuGet, Orchard CMS and WorldWide Telescope. Many of these projects are also listed under Outercurve Foundation project galleries.
- ".NET Foundation". Registration Data Search. Corporations Division. Washington State Secretary of State. Accessed on march 30, 2016.
- "NET Foundation". Guidestar. Accessed on March 30, 2016.
- "About the .NET Foundation". .NET Foundation.
- Lardinois, Frederic (April 3, 2014). "Microsoft Launches .NET Foundation To Foster The .NET Open Source Ecosystem". TechCrunch.
- Paoli, Jean (April 3, 2014). ".NET Foundation Established to Foster Open Development". MS Open Tech. Archived from the original on 2015-05-21. Retrieved 2015-05-21.
- "Frequently Asked Questions (FAQ)". .NET Foundation.
- ".NET Foundation". GitHub.
- ".NET Foundation Membership". dotnetfoundation.org. Retrieved 2019-04-14.
- ".NET Foundation". dotnetfoundation.org. Retrieved 2019-11-18.