Very very basic mod that I made for my own server that adds each player to a force with their name at the beginning of the game and sets cease fires with all other player forces.

A few things to note - it spews some debug stuff out when it is creating forces, and there's a bug that at the end of the starting cutscene the original player is put back into the player force, so you'll want to manually put that person back. Last, I'm only uploading this so that my players can easily download it - don't expect a great experience if you use it for your server unless you really know what you're doing.