SkiaSharp is a cross-platform 2D graphics API for .NET platforms based on Google's Skia Graphics Library. It provides a comprehensive 2D API that can be used across mobile, server and desktop models to render images.
SkiaSharp is a cross-platform, comprehensive 2D graphics API for all .NET platforms. And, here is where you will find all sorts of extras that you can use with it.
SkiaSharp and HarfBuzzSharp API reference docs
POSIX/Unix interface for Mono, .NET and .NET Core. Provides functionality for managed code to access POSIX/Unix features not accessible via the BCL. This repository supersedes the older code in https://github.com/mono/mono