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For the family of Mac operating systems, see Mac operating systems. For the Ugandan school nicknamed "Macos", see Makerere College School. macOS, originally Mac OS X, previously shortened as OS X, is an operating system developed and marketed by Apple since 2001.
However, the current macOS is a UNIX operating system built on technology that had been developed at NeXT from the 1980s until Apple purchased the company in early 1997. [1]. macOS components derived from BSD include multiuser access, TCP/IP networking, and memory protection. [2] Although it was originally marketed as simply "version 10" of Mac ...
Mac operating systems were developed by Apple Inc. in a succession of two major series. In 1984, Apple debuted the operating system that is now known as the classic Mac OS with its release of the original Macintosh System Software. The system, rebranded Mac OS in 1997, was pre-installed on every Macintosh until 2002 and offered on Macintosh ...
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 was the successor to macOS Catalina (macOS 10.15).
macOS Monterey (version 12) is the eighteenth major release of macOS, Apple 's desktop operating system for Macintosh computers. The successor to macOS Big Sur, it was announced at WWDC 2021 on June 7, 2021, [3][4][5][6] and released on October 25, 2021. [7][8] macOS Monterey was succeeded by macOS Ventura, which was released on October 24 ...
t. e. OS X Lion, [5][6] also known as Mac OS X Lion, [2] (version 10.7) is the eighth major release of macOS, Apple 's desktop and server operating system for Mac computers. A preview of OS X 10.7 Lion was publicly shown at the "Back to the Mac" Apple Special Event on October 20, 2010. It brought many developments made in Apple's iOS, such as ...
macOS Sequoia (version 15) is the twenty-first and current major release of Apple 's macOS operating system, the successor to macOS Sonoma. It was announced at WWDC 2024 on June 10, 2024. [4] In line with Apple's practice of naming macOS releases after landmarks in California, it is named after Sequoia National Park, located in the Sierra ...
The following is a list of operating systems released by Apple Inc. As of 2023, there are six supported software platforms: iOS, iPadOS, watchOS, tvOS, macOS and visionOS. Prior to the introduction of the Macintosh in early 1984, Apple had several operating systems for the Apple II series, Apple SOS for the Apple III series, and Lisa OS and ...
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