OS X is the operating system used by Apple's Macintosh range of computers.
Since the first release in 2002, there has been six versions of the operating system:* 10.0 (Cheetah)
* 10.2 (Puma)
* 10.3 (Jaguar)
* 10.4 (Panther)
* 10.5 (Tiger)
* 10.6 (Leopard)
* 10.7 (Snow Leopard)
