Assetto Corsa Server Manager is free, open source software. We're really proud of it and we think it adds a lot of really exciting stuff to Assetto Corsa. It's improved the way we play and enjoy the game, and we hope that it has done for you too.
We have dedicated a lot of time towards the development of Server Manager, and it'd be great if you would consider supporting us. It helps us keep working on cool new features for Server Manager!