Mac OS X Celebrates Its Xth Birthday [Video]

Ten years ago today, Mac OS X version 10.0, code named "Cheetah", made its official debut. Sales of new operating system began on March 24, 2001 for $129.

Mac OS X v10.0 was a radical departure from the previous "classic" Macintosh operating system and was Apple's long awaited answer to the call for a next generation Macintosh operating system. It introduced a brand new code base completely separate from Mac OS 9's, as well as all previous Apple operating systems. Mac OS X introduced the new Darwin Unix-like core and a totally new system of memory management. It proved to be a rocky start to the Mac OS X line, plagued with missing features and performance issues, although it was praised for being a good start to an operating system still in its infancy, in terms of completeness and overall operating system stability. Unlike later releases of Mac OS X, the cat-themed code name was not used in marketing the new operating system. [W]

TUAW has published a nice overview of the operating system's iterations over the years. You can check it out at the link below...