See Lou Poppler's Web page and the Melbourne Backgammon Club page for more information. Kit and Sally Woolsey have kindly volunteered to pay the running costs of FIBS out of their own pockets. Many commercial servers have started up recently. The largest is CyberArts 's Games Grid. Their client software is much prettier than the FIBS clients, and they offer daily tournaments, expert lessons, etc.
Guests can play for free but are unrated.
Netgammon is another commercial server for Windows users. There are also computer programs called HC-Gammon , Motif Backgammon and Ian's Backgammon which you can play against on the Web. These are only the main servers dedicated to backgammon. There are lots of other servers which have backgammon as one of many games. There are lots of tournaments on the various backgammon servers.