The recompiling CPU emulator was written by Eric Traut.
It was first released for the Macintosh, in 1999, after being previewed at Macworld/iWorld the same year by Steve Jobs and Phil Schiller. The Virtual Game Station (VGS) was an emulator by Connectix that allows Sony PlayStation games to be played on a desktop computer. 'Virtual Game Station' at the Wayback Machine (archive index)