Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. 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 It superseded Mac OS X v10.1 code name Puma and preceded Mac OS X v10.3 Panther . 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, 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.