Star Wars RPG factoid

I knew that back in the mid-eighties several companies vied for the license to do a Star Wars rpg.  Today on RPG.net I heard that some game publishers that lost the bidding went ahead and published there intended system anyway, sans Lucasian IP.  The only such game that was mentioned by name was FASA's Renegade Legion line, which I didn't even know included an RPG!  According to my informant the four RL wargames all smoothly integrated with the Legionaire rpg.  Very interesting.  I had always kinda wondered why FASA had bothered to put out another sci-fi brand.  I'd sure like to know what other almost-Star Wars games are out there.  MegaTraveller or T2300? Space Master second edition?  Buck Rogers XXVc?