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The world celebrates the 20th anniversary of .NET on February 14. Join the party on X by sharing your favorite .NET moments with
The latest release becomes the fastest adopted version of .NET ever, with over 7,000 contributors outside Microsoft making more than 21,000 contributions. It includes C# 10, F# 5, and many new features to simplify code, iterate faster, and perform better.
.NET Core 1.0 releases at Red Hat DevNation, showing how serious Microsoft is about embracing Linux and demonstrating its commitment to open source.
The .NET Compiler Platform (Roslyn) is released as open source at Build in April and the .NET Foundation is founded. In November, the .NET Core project -a cross-platform, high-performance implementation- begins on GitHub.
Microsoft releases the source code for ASP.NET MVC under MS-PL license. By 2012, it is relicensed under Apache 2.0 and becomes one of the first major open-source projects at Microsoft.
F#, the first functional-based .NET programming language, is developed by Don Syme in Microsoft Research. It was originally released under a shared source license and then re-released under an open-source license (Apache 2.0) in 2010.
This unified IDE includes the first .NET release that allows you to build Windows client (Windows Forms) and Web (ASP.NET) applications, supporting C# and Visual Basic.
Microsoft unveils the vision and road map for its next generation of software and services, the Microsoft .NET platform.