These are libraries that FoxGuard has developed over the course of several years of internal commercially-driven software engineering projects.
All changes to master are continously delivered to the public NuGet feed under our organization.
For now, the best documentation of the libraries are the published NuGet packages themselves. For each package, the package descriptions themselves are meant to be helpful, and the public APIs they expose are meant to be idiomatic for each respective problem-space.
If you have something to fix or add - be it code, documentation, or just a question - please feel free to file constructive issues or pull requests, as appropriate.