Rauther Power Industries is a major corporation headquartered on the planet Rauther in the Rautherion System. Though Rauther primarily builds ship subsystems--armament in particular--it also built the distinctive Lightning gunboats favored (in modified form) by the Wild Geese and the Rebellion.
Among the many ship upgrades available from Rauther are:
Rauther is also one of the few places where you can buy Ion Cannons with a license.