OSMC is a free and open source media center
osmc.tv
osmc.tv
Link to their GitHub repo: https://github.com/samnazarko/osmc
Kodi is a media center application and OSMC is the operating system that runs Kodi and brings it to your device. OSMC is not a fork of Kodi but rather a Linux distribution that ships Kodi as the main application. This is a similar concept to Kodi running on top of Windows or Android.
OSMC is based on Debian Jessie (a flavour of GNU/Linux) and has been heavily optimised to provide the best TV experience possible.
Do I have to go back through the docs on Kodi and assume this will do everything Kodi will?
PostgreSQL is an open source project, and has documentation on par with its commercial alternatives. Open source doesn't have to mean poorly documented.
Great job Sam and the team.