erikma 

A .NET library that encapsulates OS and filesystem differences for creating Copy-on-Write file links. For release notes see https://github.com/Microsoft/CopyOnWrite#release-history .

An optimized string data structure built from Memory<char> and Span<char> to reduce GC.

Use C#/VB await keyword with AutoResetEvent, ManualResetEvent, or Semaphore in .NET apps.