No Frontiers is finally out in a very raw state. After many games of Klingons vs Star Wars Rebels, Oceanic vs Cylons, Colonial Battlestars vs Star Wars Imperials, the raw rules are available for download.|
Also available is a spreadsheet to allow players to create a ship profile for any an all miniatures including anything you care to scratch build!
There are plenty of small manufacturers of models available, although you sometimes need to be wary of the scale, particularly with some fighter ships. It can look a bit odd if your X-Wing fighter is nearly the same size as your opponents Star Destroyer.