md5: d87bc3496a1c20f27927f507db408495
From Wikipedia:
Mac OS 9 - the latest version of the "classical» Macintosh Operating System (Mac OS), Apple introduced Oct. 23, 1999, before the release of Mac OS X. During the presentation, in Mac OS 9, it was announced "50 new features," including the possibility of a 128-bit encryption and Sherlock 2.
Mac OS 9, code-named «Sonata» originally was supposed to be released as Mac OS 8.7. Many consider it the most functional of the original Mac OS. At the time, both Mac OS 9 did not include such modern operating system features like protected memory and preemptive multitasking, the latest improvements included the addition of an automatic Software Update engine and support for multiple users.

Year: 2001
Version: 9.2.2
Developer: Apple
Developer's site: http://www.apple.com
Platform: PPC only
Language: English
Tablet: Not required
System Requirements: Power Mac G4, Power Macintosh G3, PowerBook G4, PowerBook G3 (except the original PowerBook G3), iMac, and iBook.

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