I just uploaded my first tool - The Galaxy Viewer. It hasn't been optimized much yet so it's still kind of slow, yet it is still kind of interesting to look at. It is eventually going to be used as the map system - it will contain icons of all the habited worlds in the game, and when you click them you can view information about that player and attempt to quantum jump there. If there is more than one player in the same general area, it will zoom in enough to show all the individual players in that sector. There are billions of stars, so I shouldn't run out, but if I do, it's not that tough to generate a new galaxy.
Check that out here: Games.cs.umass.edu