Aside from all the various manufacturers of aircraft (I don't have my books at hand atm) I do know of another transport company - Empire Transit. It's Imperial Air's biggest rival, and one of the Blake campaigns revolves around Blake pilots hired as Empire Transit security guards.
Good judgement comes from experience. Experience comes from bad judgement.
"Is it heavy?" "Yes." "Then it's expensive - put 'em back." -Jurassic Park
With me surprises are rarely unexpected. - Any Pink Panther movie