There are a couple of projects that form the main parts of .NET Core and these are CoreCLR and CoreFX. CoreCLR contains the .NET Core CLR and the base core library, mscorlib. The CLR is the virtual machine that runs your .NET code. CoreCLR contains a just-in-time (JIT) compiler (RyuJIT), Garbage Collector (GC), and also base types and classes in mscorlib. CoreFX includes the foundational libraries and sits on top of CoreCLR. This includes most built-in components that aren't simple types. There is also the Roslyn compiler, which turns your C# (or other .NET language code) into Common Intermediate Language (CIL) bytecode. RyuJIT then turns this into native machine code at runtime.
You may have heard of the upcoming native tool chain. ...
