Compositex Inc.
- Small high-tech business located near Salt Lake City, Utah, specializing in liquid rocket propulsion systems, advanced filament-wound composite structures, ablative components for rockets, and aircraft designs.
- http://home.comcast.net/~compositex

Command and Control Technologies Corp.
- Provides software products and turnkey systems for launch site automation and other mission-critical control system applications.
- http://www.cctcorp.com

Tethers Unlimited, Inc.
- Small business that designs, develops and builds space transportation systems using space tethers to transfer energy and momentum to payloads without the use of rocket propellant.
- http://www.tethers.com/

Weld Plus Inc.
- Manufactures satellite assembly positioners for space satellites.
- http://www.wpi-space-satellite.com/index.htm

Tecnologia Aeroespacial Mexicana
- Design and construction of hydrogen peroxide rockets, distillation units, and penta metallic catalyst packs. [choose between Spanish and English]
- http://www.tecaeromex.com/

Micro Aerospace Solutions, Inc.
- Specialize in designing systems for small and nanosatellites.
- http://www.micro-a.net/

Instrumentation Technology Associates, Inc.
- Provides low-cost, turnkey access to space with its flight-proven hardware for microgravity research.
- http://www.itaspace.com/

Swiss Propulsion Laboratory
- Focused on research and development of systems to transport small civilian payloads into a low-earth orbit. Development of liquid bi-propellant engines and solid boosters.
- http://www.spl.ch/

TransOrbital, Inc.
- A commercial venture dedicated to the development of space transportation technologies. Working in concert with others to facilitate the colonization and commercial development of space in the 21st Century.
- http://www.transorbital.net/

Orbitica
- French and English site which sells gps, satellite phones, pagers, and meteo receivers.
- http://www.orbitica.com/

Space Tourism
- Interglobal 21st-Century Mall - Future space activities
- http://www.interglobal.org/

The Lunar Resources Company
- Commercial space enterprise. Creators of the Artemis moon base project.
- http://www.tlrc.com/

HMX Inc.
- Development and testing of liquid and hybrid rocket engine designs.
- http://www.hmx.com/

Space Media Corporation
- Video and New Media production services for the worldwide Space community.
- http://www.spacemedia.com/

SpaceDev Corp.
- For profit space development emphasizing low-cost mission solutions, off-the-shelf-components and inexpensive mission design, construction and operations.
- http://www.spacedev.com/

SpaceAge Control, Inc.
- Miniature and subminiature position transducers and air data probes.
- http://www.spaceagecontrol.com/

Analytical Graphics
- Leader in space software - download free Satellite Tool Kit
- http://www.stk.com/