Forterra Systems, Inc. was a 3D graphics software company headquartered in San Mateo, California that produced private and secure MMOvirtual worlds for corporate, government, defense, medical and educational clients. Forterra Systems also shared a close history with the MMOGThere. On February 1, 2010, Science Applications International Corporation (SAIC) announced its acquisition of the company's simulation & collaboration product line, including all names, trademarks and licenses.