Open source releases from Microsoft
CoreCLR is the runtime for .NET Core. It includes the garbage collector, JIT compiler, primitive data types and low-level classes.
The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.
Windows UI Library: the latest Windows 10 native controls and Fluent styles for your applications
ASP.NET Core is a cross-platform .NET framework for building modern cloud-based web applications on Windows, Mac, or Linux.
Entity Framework Core is a lightweight and extensible version of the popular Entity Framework data access technology