Swiss Space Systems (S3) was a company that planned to provide orbital launches of small satellites and crewed sub-orbital spaceflights.

"[4] As of March 2013[update], project partners included the European Space Agency, Dassault Aviation and the von Karman Institute for Fluid Dynamics.

[6] In 2016, Swiss Space Systems asked to delay bankruptcy procedures as new funds from Singapore bank Axios Credit were expected.

[11][needs update] In July 2014, S3 announced a partnership with North Bay, Ontario, Canada and Canadore College to start drop-test flights of a scale version of the SOAR spaceplane at Jack Garland Airport (CYYB).

[12] In addition to crewed sub-orbital spaceflights, SOAR would also enable high-speed commercial flights (over Mach 3), allowing, for instance, passengers to reach Sydney from Geneva in only a few hours.

[15] S3 ZeroG was a part of Swiss Space Systems Holding SA, which offered flights in reduced gravity aircraft, a modified Airbus A300.

[19] At the end of 2016, the company announced the first parabolic flights in January 2017; however, according to astronaut Claude Nicollier, President of the Committee of Experts of Swiss Space Systems, "It is absolutely impossible, it needs an official authorization and it will take months, if not years".