My friend and I have been playing Automobilista 2 for a year or so now. During that time, we've been working on an easy to use race management interface for the game called "Race Manager". It supports online championships with permanent history tracking, race results, custom race sessions, easy rotation management/generation, general server management, etc. It also has REST API for programmatic interactions. We enjoy using it for our races and have decided to release (open-source) it for others to use. We plan to keep adding features, so if you like it and have any ideas, please share. Here is a demo video of the application. The code, the download and the documentation on setup/usage can be found here.
