Over all the user interface is not muchdifferent from the MacOS 8.x desktop but there have been many technicalimprovements and some new features added.
MacOS 9.2.2 is the last versionof MacOS based on the original Macintosh operating system. MacOS 9.0 was released in October 1999 with the final update for it,version 9.2.2, release in December 2001. OS X Yosemite Simulator by matei-bratu OS X Yosemite Simulator by sardiniangale OS X Yosemite Simulator TV Version by ibradley2334 OS X Yosemite Simulator remix by ellistomas Mac OS X Sierra (10.12.0) by -Apple-Inc Mac OS X 10.7 by PigVenomPV OS X Yosemite X Kirby Simulator by honnybean Mac OS Simulator by ownh What a mac does. Best Mac emulators guide: Emulate Mac OS 9 with SheepShaver Should you want to delve into the Apple period between the Macintosh Plus and OS X, SheepShaver will emulate Mac OS 7.5.2 through 9.0.4.