Those of us who make shipsets or model components/facilitys in 3d might want to check this one out. Its like Nendo, another modeling program, but free.
http://www.wings3d.com/
Bit more complicated than DOGA from what I've seen- you have to build everything from scratch- but for low-poly stuff it seems like it would work well. Doesn't export to X (for Starfury) but it exports to other formats that can be converted to X.