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macOS. 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 ...
t. e. OS X Yosemite ( / joʊˈsɛmɪti / yoh-SEM-it-ee; version 10.10) is the eleventh major release of macOS, Apple Inc. 's desktop and server operating system for Macintosh computers. OS X Yosemite was announced and released to developers on June 2, 2014, at WWDC 2014 and released to public beta testers on July 24, 2014.
OS X El Capitan ( / ɛl ˌkæpɪˈtɑːn / el KAP-i-TAHN) ( version 10.11) is the twelfth major release of macOS (named OS X at the time of El Capitan's release), Apple Inc. 's desktop and server operating system for Macintosh. It focuses mainly on performance, stability, and security. [ 3] Following the California location-based naming scheme ...
macOS Sierra (version 10.12) [ 4] is the thirteenth major release of macOS (formerly known as OS X and Mac OS X ), Apple Inc. 's desktop and server operating system for Macintosh computers. The name "macOS" stems from the intention to unify the operating system's name with that of iOS, watchOS and tvOS. Sierra is named after the Sierra Nevada ...
macOS. macOS Big Sur (version 11) is the seventeenth major release of macOS, Apple 's operating system for Macintosh computers. It was announced at Apple's Worldwide Developers Conference (WWDC) on June 22, 2020, [ 4] and was released to the public on November 12, 2020. [ 5][ 4][ 6] Big Sur is the successor to macOS Catalina, and was succeeded ...
t. e. Mac OS X 10.0 ( code named Cheetah) is the first major release of macOS, Apple's desktop and server operating system. It was released on March 24, 2001, for a price of $129 after a public beta . Mac OS X was Apple's successor to the classic Mac OS. It was derived from NeXTSTEP and FreeBSD, and featured a new user interface called Aqua, as ...
OS X Mavericks (version 10.9) is the 10th major release of macOS, Apple Inc. 's desktop and server operating system for Macintosh computers. OS X Mavericks was announced on June 10, 2013, at WWDC 2013, and was released on October 22, 2013, worldwide. The update emphasized battery life, Finder improvements, other improvements for power users ...
Mac OS X succeeded classic Mac OS, the primary Macintosh operating system from 1984 to 2001. Its underlying architecture came from NeXT 's NeXTSTEP, as a result of Apple's acquisition of NeXT, which also brought Steve Jobs back to Apple. The first desktop version, Mac OS X 10.0, was released on March 24, 2001.