Run Classic Mac OS on a Mac Plus Emulator in Any Web Browser Guide is free? Is this helpful? No not really, but it’s fun, and at least it’s not a toilet paper dispenser. There is even a web-based Atari ST emulator and IBM PC 5150 with DOS for those who really want to go the retro route. If this looks like Linux in a browser thing we discussed a while ago you’d be right, it’s the same basic idea. Not surprisingly, the Mac Plus emu runs a bit slower in iOS, and you have to be pretty accurate with your taps to open folders and apps, making it more of a novelty than a usable emulator. Since it’s all in the browser, the old jailbreak emulator method isn’t necessary. Here it runs on an iPhone, complete with a bad Instagram filter to emphasize the retro factor:

It’s actually pretty fast on any modern Mac or PC in a half-quality web browser, but you can even run the Mac Plus emulator on an iPhone or iPad in Safari or Chrome. As mentioned, this indeed works on just about every conceivable platform.