Blogcritics.org has written a belated review of Vendetta Online in which they compare it to Wing Commander Privateer. While it's not quite as popular as Eve Online or Jumpgate, Vendetta has releatively low system requirements and runs on PC, Mac and Lunix systems. Although copies on store shelves are somewhat rare these days, when you do see them they're about $10 and the developers still actively support the gameworld. Players don't have individual characters, but they are represented by their unique ships and the various upgrades people can afford. Space is nice and colorful in the game, and both atmospheric Wing Commander-style or Jumpgate-style realistic physics flight models can be chosen. A free trial is available to download and play if this sounds like your kind of thing.