See this is exactly what I'm talking about ! I can't blame you for not being up to date with developments on .NET platform or in the Microsoft world - but plea

See this is exactly what I'm talking about ! I can't blame you for not being up to date with developments on .NET platform or in the Microsoft world - but please o please refrain from making comments about the issue you are not informed about and obviously haven't looked in to for the last couple of years. Microsoft has their own cross platform open source .NET implementation under MIT license supported officially on Linux and OSX. https://github.com/dotnet/coreclr https://github.com/dotnet/coreclr Not only that but they are opensourcing and porting huge parts of their stack like build system, web framework, etc. and are supporting it officially on Azure cloud. https://github.com/aspnet/Mvc https://github.com/aspnet/Mvc They are doing pure OSS from scratch projects such as LLILC - a static compiler for CoreCLR based on LLVM : https://github.com/dotnet/llilc https://github.com/dotnet/llilc Further more even before that Microsoft has started opensourcing large parts of their implementation at the request from Mono team and Mono has taken those + CoreCLR and made their implementation better - showing that they actually wanted to help Mono team implement feature parity. And finally Microsoft recently acquired the Mono team (Xamarin) and will probably fold that in to their OSS offerings. So please stop the FUD - it's not helping anything - I realize you have an opinion but before voicing it please check if it matches the facts - otherwise you're just creating noise in the discussion.