GST was a group of computer companies based in Cambridge, England, founded by Jeff Fenton in June 1979. The company worked with Atari, Sinclair Research, Torch Computers, Acorn Computers, Monotype Corporation and Kwik-Fit, amongst others. The group included: In 2001 GST merged with eGames Europe as a new company, Greenstreet Software. It remains a developer and publisher of computer software for Windows operating systems. In July 2008 the company was reconstructed and now trades as Greenstreet Online Limited.