Companies
US-Based:
- Revolution Space formerly Accion Systems
- Aerojet Rocketdyne
- Astra
- Busek
- CU Aerospace
- Earth Observant
- ExoTerra
- Kuiper
- K2 Space
- Orbion
- RocketStar formerly Miles Space
- Momentus
- NewOrbit
- Northrop Grumman
- Phase Four
- Space Electric Thruster Systems
- SpaceX
- Viridian
International: