I use Moray and POV-Ray. I tried Doga a while back, but didn't like it so much. I used to have lots more different ships (a made a few for a Terran race and some other non-Kwok stuff), but I deleted them some time ago (why?)
Here is an evolution of the Kwok character:
Top left is Kwok as a Geezoid, followed by top right where Kwok was a Rukbat. Bottom left, features Kwok as a Juprup (aka Speaker Kwok to those in my PBW games) and finally Captain Kwok in his Federation captain's uniform.