Romulan Scout Ship
Crew Complement: 20
Maximum Warp: 7
Weapons: 2 Disruptor Banks, 1 aft, 1 foreward.
Dominion ship
Dominion Ships have weapons that can beat Fedaration shields until Captain Sisko found away to get around that.
Ferengi Marauder
Ferengi Marauders have weapons that can disable a Galaxy Class Starship.
Galor Class Warship
These ships are used by the Cardassian Union.
Cardassian Freighter
Borg Cube
Borg Cubes are powerful ships that are superior to any Starship as they demonstrated at Wolf 359 though they had help from Picard who was assimilated.
Klingon Bird of Prey
Crew Complement: Varies from ship to ship
Maximum Warp: 8
Weapons: 2 Photon Torpedo launchers, 1 foreward, 1 aft. 1 foreward disruptor bank.
Klingon Battle Cruiser
Crew Complement: 175
Maximum Warp: 8.5
Weapons: 2 Photon Torpedo launchers, 1 foreward, 1 aft. 2 Disruptor Banks, 1 foreward, 1 aft.
Vor'cha Attack Cruiser
Crew Complement: 500
Maximum warp: 9.5
Weapons: 4 Photon Torpedo launchers, 2 foreward, 2 aft. 4 disruptor banks, 2 foreward, 2 aft. 2
Disruptor Cannons, 1 foreward, 1 aft.