Masten Space Systems is an US rocket company that is currently developing a line of reusable spacecraft, and related rocket propulsion hardware. 

Masten Space Systems designs, builds, tests and operates reusable launch vehicles. 

Masten Space Systems competed in the NASA and Northrop Grumman Lunar Lander Challenge X Prize in 2009, winning the level one second prize and the level two first prize. On November 2, 2009 it was announced that Masten Space Systems had won first place in the level two category, with Armadillo Aerospace coming in second.

Space Operations, Inc. (SpaceOps) was established to satisfy a growing world-wide demand for a reliable and affordable spacecraft vehicle with capacity for carrying flight crews and vital cargo into space.

Mission Statement: To provide a crew launch capability, based in the the U.S., at the earliest possible time.

Space Operations was founded in 2011.

TS-Space Systems is a British company providing solar simulator technology to the space industry.

Starchaser Industries is a privately held, high technology group of companies that specialises in the development, operation and commercialisation of space related products and services.

Starchaser Industries focuses on the space tourism and micro-satellite launch markets.

E'Prime Aerospace is a U.S. company committed to providing launch services.

Its customers are the United States Department of Defense (U.S. Air Force), the National Aeronautics and Space Administration (NASA), and other government and commercial entities including telecommunications, aerospace, security, and defense industries.

Rocketplane Global, Inc. (RGI)  is an USA company dedicated to commercial space flight.

Rocketplane is designing the XP suborbital vehicle.

Rocketplane was founded in 2001.

Explore Mars Inc. is a project-oriented, international non-profit organization passionately dedicated to awareness and action resulting in successful human exploration of Mars.

Explore Mars was created to promote science and technology innovation and education with a use for Mars Exploration. Through a series of technology innovation awards, scientific symposiums and workshops, Mars analog work, technology demonstrations, and other programs, we provide a platform for scientists and "citizen scientists" to engage in meaningful space exploration research and development in the private sector.

The new focus on private sector investment in space creates a unique opportunity for 'Explore Mars'. "Not only do we plan to promote the humans to Mars cause," said Explore Mars Executive Director, Chris Carberry, "but with the right mix of prizes, programming, and projects, we can make a significant contribution in advancing the cause of sending humans to Mars."

Explore Mars Inc. was formed in 2010.

The Ecuadorian Civilian Space Agency (EXA) is the organisation in charge of administering and executing the Ecuadorian civilian space program and conducting scientific research on space and planetary sciences.

It is a non-profit NGO with 100% civilian operation capital through private funding and self-sustained. It was established on November 1, 2007 and includes the first Ecuadorian trained astronaut, Ronnie Nader, among its staff members.

The Netherlands Institute for Space Research (SRON) is the Dutch expertise institute for space research.

The Institute develops and uses innovative technology for research in space, focusing on astrophysical research, Earth science and planetary research. SRON has a line of research into new and more sensitive sensors for X-rays and infrared radiation. SRON was founded in 1983 under the former names Stichting Ruimteonderzoek Nederland / Space Research Organisation Netherlands. SRON is part of the Netherlands Organisation for Scientific Research (NWO) and has facilities in Utrecht and in Groningen.

SEAKR Engineering Inc. is a company dedicated to space electronics. 

SEAKR is a supplier of solid state recorders for spacecraft. The company is proposing as well space-based data processors, command and data handling units, satellite communication avionics, power supplies and reconfigurable computers.

SEAKR was founded in 1983.