It works flawlessly with OS 8-compatible software and comes with Oregon Trail, Photoshop 3.0.5, and other apps preinstalled. But like Felix Rieseberg’s Windows 95 emulator, macintosh.js works incredibly well. The macintosh.js app is available on Github and works on macOS, Windows, and Linux.įrankly, the idea of emulating a 29-year-old computer within JavaScript is terrible and ridiculous. Thanks to Slack developer Felix Rieseberg, you can now run Mac OS 8 on a 1991 Macintosh Quadra 900 in a single JavaScript app. Forget the complicated virtual machines and OS installers.