Įventually, NeXT's OS, then called OPENSTEP, was selected to be the basis for Apple's next OS, and Apple purchased NeXT outright. While Jobs was away from Apple, Apple tried to create a "next-generation" OS through the Taligent, Copland and Gershwin projects, with little success. NeXTSTEP was the graphical, object-oriented, and UNIX-based operating system developed by Steve Jobs' company NeXT after he left Apple in 1985. Certain parts from FreeBSD's and NetBSD's implementation of Unix were incorporated in NeXTSTEP, the core of Mac OS X. Starting with v10.7 "Lion", OS X Server is no longer offered as a separate operating system product instead, the server management tools are available for purchase separately, and are preloaded on the server models of Mac Pro and Mac Mini along with OS X. The server edition, OS X Server, was architecturally identical to its desktop counterpart, and included tools to facilitate management of workgroups of OS X machines, and to provide network services. Mac OS X 10.7 "Lion" was the first version of OS X to drop support for 32-bit Intel processors and run exclusively on 64-bit Intel CPUs. 10.6 "Snow Leopard" was the first version of OS X to drop support for PowerPC Macs. In 2007, 10.5 "Leopard" was the first to run on both PowerPC and Intel Macs with the use of Universal Binaries. In 2006, the first Intel Macs had a specialized version of 10.4 "Tiger". OS X originally ran on PowerPC-based Macs. An unnamed variant of v10.4 powered the first generation Apple TV. iOS, which runs on the iPhone, iPod Touch, iPad, and the 2nd and 3rd generation Apple TV, shares the Darwin core and many frameworks with OS X. Versions 10.5 "Leopard" running on Intel processors, 10.6 "Snow Leopard", 10.7 "Lion" and 10.8 "Mountain Lion" have obtained UNIX 03 certification. The 'X' is also used to emphasize the relatedness between OS X and UNIX. OS X, whose X is the Roman numeral for 10 and is a prominent part of its brand identity, is built on technologies developed at NeXT between the second half of the 1980s and Apple's purchase of the company in late 1996. Releases of OS X are named after big cats: for example, OS X v10.8 is referred to as " Mountain Lion". The first version released was Mac OS X Server 1.0 in 1999, and a desktop version, Mac OS X v10.0 "Cheetah" followed on March 24, 2001.
It was the successor to Mac OS 9, released in 1999, the final release of the "classic" Mac OS, which had been Apple's primary operating system since 1984. It is designed to run exclusively on Mac computers, having been pre-loaded on all Macs since 2002. OS X ( / oʊ ˌ ɛ s ˈ t ɛ n /), previously Mac OS X, is a series of Unix-based graphical interface operating systems developed, marketed, and sold by Apple Inc.
Part of the ]] familyĬlosed source (with open source components) For other uses, see OSX (disambiguation).
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