Busek Designs and manufactures electric propulsion systems for spacecraft, including Hall effect, electrospray, RF ion, and green monopropellant thrusters Exos Aerospace FAA-licensed reusable suborbital launch operator for payload testing, research, and orbital vehicle development 
| Busek | Exos Aerospace | |
|---|---|---|
| Founded | 1985 | 2014 |
| Headquarters | Massachusetts | Greenville, Texas |
| Type | private | private |
| Status | operating | operating |
| Employees | 107 | — |
| Total funding | $200K | $7M |
| Latest round | Grant | Series A |
| Sectors | Space Propulsion, Satellite Components & Subsystems | Launch Services, Space Propulsion, Suborbital & High-Altitude |
| Products listed | 9 | 7 |
| Federal contracts | — | — |
| Launches | — | — |
| Leaders listed | Vlad Hruby, James Szabo, John Meikle | David Mitchell, John Quinn, Neil Milburn |
| News mentions | 0 | 0 |
How do Busek and Exos Aerospace compare?
Both companies work in Space Propulsion. Busek was founded in 1985 and Exos Aerospace in 2014.