I would like introduce StbSharp: https://github.com/StbSharp
Which is C# port of famous gamedev framework.
It is important to note, that this project is port (not wrapper). Original C code had been ported to C#. Therefore StbSharp doesnt require any native binaries.
So if anyone is looking for pure C# solution to load images(StbImageSharp), write images(StbImageWriteSharp), load oggs(StbVorbisSharp) or load ttf fonts(StbTrueTypeSharp), then they might give StbSharp a try.
License: Public Domain.