Microsoft Open sources .net

Microsoft had announced that it is making core part of .Net framework open-source, and cross-platform on Windows, Mac OS X, and Linux.

Microsoft also recently announced a free version of it's visual studio.
It also unveiled the next version of its Visual studio 2015 preview.
The open source components of the .Net frameworks can be found at the Microsoft github repoisitory http://github.com/Microsoft/referencesource .