http://news.microsoft.com/2014/11/12/mi ... io-online/
Microsoft announced today, "On Wednesday, Microsoft Corp. reinforced its commitment to cross-platform developer experiences by open sourcing the full server-side .NET stack and expanding .NET to run on the Linux and Mac OS platforms. Microsoft also released Visual Studio Community 2013, a new free edition of Visual Studio that provides easy access to the Visual Studio core toolset. The announcements kicked off Microsoft’s Connect (); event, where the company released Visual Studio 2015 Preview and .NET 2015 Preview."
Microsoft open sourcea serverski dio svoje .NET tehnologije i proširuje .NET da može raditi na Linux i OSX platformama.