Mac OS X Leopard – 10.5 Mac OS X version 10.5 Leopard, is the sixth major update to Mac OS X for Apple’s Macintosh computers, and was released on October 26, 2007. Mac OS X 10.5 Leopard was available as an upgrade to new Apple computers purchased after 1st October 2007 that did not already have Mac OS X 10.5 installed or a Leopard upgrade DVD included. Leopard was the last OS released by Apple to support both the Intel and PowerPC architectures. To je prva verzija Mac OS X-a koja je ukinula podršku za G3 sustave i predstavlja novu verziju Aqua koju bi Apple koristio do Snow Leoparda. To je također posljednja verzija Mac OS X-a koja ima podršku za Intel Pentium 4 procesore, iako se to može vidjeti samo s Hackintosh modelima jer nema maloprodajnih Macova koji se isporučuju s Pentiumom 4s. Univerzalni binarni koncept proširen je u Leopardu, budući da su odvojene verzije za Intel i PowerPC Macove objedinjene u Leopardu i instalacijski mediji mogli su se koristiti za oba sustava. Prve 64-bitne Mac aplikacije dizajnirane su za Leopard zbog novog 64-bitnog korisničkog područja (jezgra je ostala 32-bitna do Snow Leoparda).
Mac OS X Snow Leopard – 10.6 Apple has always been creative in dealing with the marketing strategies that they come up with to make a stand in the market. the release of the Mac OS X snow leopard is by far considered the best market release. This statement is adhered to by the low price release the end-users had to pay for a single user license as well as the ease of involvement involved with the use of the Mac OS X snow leopard. The Mac OS X snow leopard didn’t house any new additional feature but was hauled with an improvement in the software framework the existing features worked on.
