Graphsim Entertainment is a software publisher that focuses primarily on air combat simulators and similar simulation games. It was founded in 1992 as Graphic Simulations, or Graphsim for short, to publish Parsoft Interactive's seminal Hellcats Over the Pacific for the Mac. This was widely reviewed as the best flight simulator on the Mac, and the company earned the reputation for "the best flight sims on the Mac market."
Parsoft began writing an F/A-18 Hornet simulator with plans to distribute through Graphsim, but the companies had a parting of ways. Parsoft turned to A-10 Attack!. Graphsim used the unfinished F/A-18 precursor to develop F/A-18 Hornet. Hornet spawned a number of upgrades, mission packs, and a port to Microsoft Windows in 1995. Today, Graphsim is primarily a distributor, with their notable products being X-Plane; Falcon 4.0: Allied Force; and the latest version of the F/A-18 franchise, F/A-18 Operation Iraqi Freedom.