.NET Core is Open Source and cross platformhttp://blogs.msdn.com/b/dotnet/archive/2014/11/12/net-core-is-open-source.aspx
|Today is a huge day for .NET! We’re happy to announce that .NET Core will be open source, including the runtime as well as the framework libraries.
This is a natural progression of our open source efforts, which already covers the managed compilers (C#, VB, and F#) as well as ASP.NET:
•C# & Visual Basic ("Roslyn")
•Visual F# Tools
This takes it to the next level by extending it to the .NET runtime and the core framework.
•.NET Core Framework
What is .NET Core?
.NET Core is a modular development stack that is the foundation of all future .NET platforms It’s already used by ASPNET Core 5 and NET Native I’ll go into more detail on what NET Core is and how it relates to the NET Framework in a following blog post.
And perhaps most interestingly ASP.NET 5 will be cross platform available on Windows, Mac, and Linux.