What Aramis said. The company (Profantasy) also sells Fractal Terrains that creates a world map that is tunable with inputs and Cosmographer, which creates star maps that are printable. There is a fairly good system to give 3 dimensions to the maps, as well. I haven't' really used it much to make Traveller maps, but probably will once I get a group going. There are some spaceship design templates that look like they were taken out of the Traveller system, too. You may have to get some add-ons to do all that. I spent part of my yearly bonus on getting everything one year and so have lots of toys to play with.