FIBS, the First Internet Backgammon Server
FIBS, the First Internet Backgammon Server, is the first, friendly and free site for on-line backgammon. FIBS supports all operating systems with direct telnet connection or with one of many share/freeware interfaces available for PC, Mac and Unix. Play single games or matches, chat, watch other players, compete in tournaments, be nice, and have fun!
http://www.fibs.com