Version 2.01 of Server Watch is now available offering an update to this system tray utility (as they say on the site themselves "just what you need, another icon in the task tray") that can alert you when a multiplayer game has launched on your network. Server Watch currently supports Quake, QuakeWorld, Quake II, HexenWorld, Hexen II, Sin, Heretic II, and Half-Life, with the promise of more to come.