High Quality Content by WIKIPEDIA articles! Mac OS X version 10.2 "Jaguar" is the third major release of Mac OS X, Apple`s desktop and server operating system. It superseded Mac OS X v10.1 code name Puma and preceded Mac OS X Panther (version 10.3). The operating system was initially available on 23 August 2002 either for single-computer installations, and in a "family pack", which allows five installations on separate computers in one household. The operating system was generally well-received by Macintosh users as a large step forward in the areas of stability, general speed enhancements, compatibility with other flavors of Unix and the lineup of both graphical and command line applications available; however, many critics still claimed that significant user interface speed issues existed and that the operating system was still immature and awkward to use.