Where can I find source code for .net CLR and C#?

Question

Is the source code for Microsoft .net CLR and C# open? If yes, where can I download/browse it?

Answer 1

While I'm not intimately familiar with the licensing of Microsoft's available source code, there is at least one implementation of the CLR and C# compiler that is open source -- Novell's Mono.

http://www.mono-project.com/