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macOS, originally Mac OS X, previously shortened as OS X, is an operating system developed and marketed by Apple since 2001.
The system was launched as Mac OS X, renamed OS X from 2012—2016, [10] and then renamed macOS as the current Mac operating system that officially succeeded the classic Mac OS in 2001. The system was originally marketed as simply "version 10" of Mac OS, but it has a history that is largely independent of the classic Mac OS.
The history of macOS, Apple's current Mac operating system formerly named Mac OS X until 2011 and then OS X until 2016, began with the company's project to replace its "classic" Mac OS. That system, up to and including its final release Mac OS 9 , was a direct descendant of the operating system Apple had used in its Mac computers since their ...
Mac OS 9.1: 2001–02: MorphOS 0.4 [53] 2001–03: Mac OS X Cheetah (v10.0) 2001–04: 2001–05: Windows 2000 Service Pack 2: AIX 5L 5.1 OS/400 V5R1 2001–06: OpenBSD 2.9: 2001–07: Mac OS 9.2: eComStation 1.0 2001–08: Haiku [54] 2001–09: Mac OS X Puma (v10.1) 2001–10: Pocket PC 2002 Windows XP [55] Windows XP 64-bit Edition 2002 [56 ...
The original operating system for the Macintosh was the classic Mac OS, which was introduced in early 1984 as System Software. In 1997, System Software was renamed Mac OS. In 1999, Mac OS X Server 1.0 was released, followed by Mac OS X 10.0, the first consumer release of the Mac OS X.
In 2007, Apple introduced the iPhone and its operating system, known as simply iPhone OS (until the release of iOS 4), which, like Mac OS X, is based on the Unix-like Darwin. In addition to these underpinnings, it also introduced a powerful and innovative graphic user interface that was later also used on the tablet computer iPad.
macOS is the successor of the classic Mac OS, which had nine releases between 1984 and 1999. The last version of classic Mac OS, Mac OS 9, was introduced in 1999. Mac OS 9 was succeeded by Mac OS X in 2001. [196] Over the years, Mac OS X was rebranded first to OS X and later to macOS. [197] macOS is a derivative of NextSTEP and FreeBSD.
Mac OS (originally System Software; retronym: Classic Mac OS [a]) is the series of operating systems developed for the Macintosh family of personal computers by Apple Computer, Inc. from 1984 to 2001, starting with System 1 and ending with Mac OS 9. The Macintosh operating system is credited with having popularized the graphical user interface ...