OSXDaily reports: [edited]
Ever wished you could go back to the good old days of the black & white Mac Plus, running ancient versions of Mac OS like System 7? Your dream can come true with the help of any web browser on just about any platform imaginable, be it OS X, iOS, Android, Windows, or Linux, and you’ll even get a whole bunch of classic Mac apps to play around with too.
Depending on which instance you run you’ll get either either a Mac Plus with System 7 and the classic KidPix app, or you’ll get a Mac Plus with a whole variety of old school apps like BBEdit Lite, MacDraw, MacPaint, Microsoft Word, Excel, Works, Orion, PageMaker, ZTerm, Disk Copy, Disinfectant, TeachText, ResEdit (!), StuffIt, Compact Pro, Risk, ShufflePuck Cafe, and Cannon Fodder.
Pick your fun:
Mac Plus with games & apps
Mac Plus with Kid Pix
The classic Mac OS experience is complete, you can open folders, adjust control panels, create and save files, edit things with ResEdit, or play Shufflepuck Cafe.
Thanks to Gareth Jordan for the link