Microsoft today announced that they will be open sourcing the full server-side .NET stack and expanding .NET to run on the Linux and Mac OS platforms.
http://news.microsoft.com/2014/11/12/microsoft-takes-net-open-source-and-cross-platform-adds-new-development-capabilities-with-visual-studio-2015-net-2015-and-visual-studio-online/
Regards,
Roger Lacroix
Capitalware Inc.