Bullets, some lasers. Q-switching employed on heaviest weapons, such as Homeworld Defense systems.
6k engine has been built but is too inefficient at higher speeds to be reasonable. Current speed is 4K mph with aircraft using heavy engines.
During the early existence, technology was around the current. During the war with the Driin, it made use of superweapons capable of taking out a starship the size of a Super Star Destroyer from orbit. This kept going until 11000 years ago to the current age.