GPGNet 1.5

GPGnet provides multiplayer and community support for current and future premier product offerings from Gas Powered Games.
Once you create a free GPGnet account, you can use the GPGnet online matchmaking system to locate and connect to online games of Supreme Commander, or host your own games and invite others to join!
GPGnet also lets you discuss the last battle in public or private chat rooms; keep track of friends; and even create your own clans.