OSMP Documentation Wiki
This wiki contains information on using and developing the OpenSource Metaverse Project, OSMP for short.
There are two versions of OSMP documented here:
What's the difference? Well, the C++ edition has tonnes of features. The C# edition is vastly easier to maintain and add to.
The C# edition is newer and is intended to replace the C++ version, so if you're not sure, then you probably want the C# edition.