Bruce Artwick was the creator of the first consumer flight simulator software. His original Apple II software was purchased by Microsoft and eventually became Microsoft Flight Simulator. He founded the company subLOGIC while a student at the University of Illinois at Urbana-Champaign in 1979, which released the first version of Flight Simulator the following year.
In 1988, he left subLOGIC to found BAO Ltd (Bruce Artwick Organization), retaining the copyright to Flight Simulator, which he continued to develop. In 1994, BAO released Microsoft Space Simulator, one of the first general purpose space flight simulators. In 1995, they released Tower, an air traffic control simulator. In January 1996, BAO and the copyright to Flight Simulator were acquired by Microsoft. Artwick remained with the company as a consultant.
Source: Wikipedia, "Bruce Artwick Organization", available under the CC-BY-SA License.