Where it all began!
http://www.outrage.com/
The guys who made it happen!
http://www.graphsim.com/games/games-action.html
D3 for the Mac.
http://www.lokigames.com/products/descent3/
D3 for Linux.
http://www.volition-inc.com/
The other half ;) Working on cool games like Freespace, Red Faction and Summoner.