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macOS Monterey is the final version of macOS that supports the 2015–2017 MacBook Air, Retina MacBook Pro, 2014 Mac Mini, 2015 iMac and cylindrical Mac Pro, as its successor, macOS Ventura, drops support for those models. It is the last version of macOS that can run on Macs with 4GB of RAM.
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 ...
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. It is a Unix -based operating system [ 11 ] [ 12 ] built on NeXTSTEP and other NeXT technology from the late 1980s until early 1997, when Apple purchased the company and its CEO Steve Jobs returned to ...
macOS, originally Mac OS X, previously shortened as OS X, is a Unix-based [6] [7] ... macOS Monterey was announced during the WWDC keynote speech on June 7, ...
Mac OS X 10.0; Mac OS X 10.1; Mac OS X Jaguar; Mac OS X Panther; Mac OS X Tiger; Mac OS X Leopard; Mac OS X Snow Leopard; OS X Lion; OS X Mountain Lion; OS X Mavericks; OS X Yosemite; OS X El Capitan; MacOS Sierra; MacOS High Sierra; MacOS Mojave; MacOS Catalina; MacOS Big Sur; MacOS Monterey; MacOS Ventura
macOS Sonoma (version 14) is the twentieth major release of macOS, Apple's operating system for Mac computers. The successor to macOS Ventura, it was announced at WWDC 2023 on June 5, 2023, [3] and released on September 26, 2023.
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.
Flex machine – tagged, capability machine with OS and other software written in ALGOL 68RS; GS/OS; HeliOS 1.0; KeyKOS – capability-based microkernel for IBM mainframes with automated persistence of app data; LynxOS; Mac OS ; MVS/System Product V3 (MVS/Enterprise Systems Architecture, MVS/ESA) OS/2 (1.1) OS/400; RISC iX; SpartaDOS X; SunOS 4.0