Zoners. In vanilla there were less than ten thousand. Now there are millions (if you go by Gran Canaria's info card). Osprey, ZBT, Conference, Fearless, Corvo, Aquilon, Nephilim - 7 ships. Baffin, Omicron-74, Omega-49 , Pennsylvania (orginally Zoner controlled) - four entire systems under their sway.
Zoners got a ton of their stuff when the mod was young and trying to attract players so the development team just tossed a bunch of pretty things in to attract people. Didn't matter if it made sense or not.
Other than Zoners? The Nomad factions hands down. Take a look at the player developed lore and it dwarves that of any other faction.
![[Image: 50px-OSILogo.png]](http://i32.photobucket.com/albums/d37/dannflyheit/Faction%20Icons/50px-OSILogo.png)