csDoom is here, and it kicks ass. Sure, it's capped at 8 players, and there's no mlook, and sometime your gun shoots the wrong type of ammo, but it freaking works, and works well. I hopped into a game on Map01 with 6-or-so other players, and OMFG... this is what Doom DM is like? I never knew. Since a few more than 8 people might want to play:
crystal.telefragged.com:10666 -- Map16
crystal.telefragged.com:10668 -- Map01
Have fun. I will see into setting up some custom-WAD servers later on... any particular WADs you'd like to see? Currently there's no way to set a list of WADs or maps for the server to cycle through... that will come later no doubt.