The kernel of NeXTSTEP is based upon the Mach kernel, which was originally developed at Carnegie Mellon University, with additional kernel layers and low-level user space code derived from parts of BSD. There, the Unix-like NeXTSTEP operating system was developed, and then launched in 1989 (the 'classic' 'Mac OS' is much older, came out in 1984). That company was also founded by Steve Jobs following his departure from Apple in 1985. 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. Throughout the early 1990s, Apple had tried to create a 'next-generation' OS to succeed its classic Mac OS. Simplified history of Unix-like operating systems The latest versions of macOS code name is macOS Big Sur (11.0). MacOS releases are named after kinds of big cats, or California landmarks, and have a version number that starts with 10. The core of macOS is an open source OS called Darwin, but Darwin itself cannot run macOS software. The 'X' in Mac OS X and OS X is the Roman numeral for the number 10 and is pronounced as such. Unlike that old (original) operating system, macOS (since OS X) is based on the Unix operating system (current versions have UNIX 03 certification ) and on technologies developed between 19 at NeXT, a company that Apple co-founder Steve Jobs created after leaving Apple in 1985. MacOS first came out in 2001, and is completely different than the 'classic' Mac OS that it replaced. This is called Hackintosh and violates macOS' license agreement. However, people have made the OS run on computers that are not Macs. It differs from other computers, as macOS is supposed to run only on Macs and not on other computers. These are called Macintosh computers, or Macs. MacOS, formerly Mac OS X from 2001 to 2012 and OS X until 2016, is the name of an operating system for computers made by Apple Inc. Template:Hidden top: Arabic, Catalan, Croatian, Chinese (Hong Kong), Chinese (Simplified), Chinese (Traditional), Czech, Danish, Dutch, English (Australia), English (India), English (United Kingdom), English (United States), Finnish, French (Canada), French (France), German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian, Polish, Portuguese (Brazil), Portuguese (Portugal), Romanian, Russian, Slovak, Spanish (Latin America), Spanish (Spain), Swedish, Thai, Turkish, Ukrainian, Vietnamese Template:Hidden bottomĬommercial software, proprietary software Closed source (with open source components)ġ0.15.5 Supplemental Update (June 1, 2020 16 months ago ( )) ġ0.15.6 beta 4 (July 9, 2020 14 months ago ( ))

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