I run a very tiny Corporation on EVE Online.
It used to have 40 members (8 months ago in January), but they all jumped ship and resigned to go fight wars for another corporation in the most conflict-ridden areas of hostile (0.0 Security rating) Space.
The game has a Traveller feel, especially in the Trading aspect, and that fact that missiles figure prominently in space combat, but the game also has shields and guns, so it's kind of Trek, kind of Traveller, Kind of Star Wars, but more hard-style like Traveller.
The graphics are great, but sadly, not a lot of roleplay, bu you can chat to other pilots in a text message box, or via in-game email. Nor can you "Go down to a planet". They have reapir docks you can dock at, and nice sci fi techno / electronia music that plays while you are flying / mining.
I do trade runs, and asteroid mining, sometimes a little light pirate / bounty hunting. I play perhaps 2 or 3 hours a night, in the middle of the night.
Also, I loved Elite, back in the day. Very much like Traveller. And of course the Paragon Software MegaTraveller games serve great as MT Character generators, send them to a .txt file, and print them out, right there. Very nice.
I often wish Paragon was still around. I used to live a short distance from Greensburg, PA.
Ah, the memories.