Interorbital Systems (IOS), established in 1996 in Mojave, California, develops and manufactures low-cost, state-of-the-art orbital launch vehicles and satellites for private, commercial, governmental, academic, arts, and military applications. Products include TubeSat and CubeSat Personal Satellite Kits; Bipropellant liquid rocket engines; sounding rockets; the NEPTUNE line of orbital launch vehicles; suborbital, orbital, and interplanetary launch services.