Introducing .NET Core
From a post by Immo Landwerth [MSFT]: “At connect(), we announced that .NET Core will be entirely released as open source software. I also promised to follow up with more details on .NET Core. In this post, I’ll provide an overview of .NET Core, how we’re going to release it, how it relates to the .NET Framework, and what this means for cross-platform and open source development.”
https://blogs.msdn.com/b/dotnet/archive/2014/12/04/introducing-net-core.aspx