macOS is a proprietary Unix operating system, derived from OPENSTEP for Mach and FreeBSD, that has been marketed and developed by Apple since 2001. It is the current operating system for Apple's line of Mac computers, and within the desktop and laptop computer market it is the second most widely used desktop operating system after Microsoft Windows and ahead of all Linux distributions, including ChromeOS.
Facts
SignificanceBasis from which Apple's other operating systems, including iOS, iPadOS, watchOS, tvOS, audioOS and visionOS, are derived 1 Classification
LicenseProprietary (Closed Source) 1 FAQs
Which releases were called OS X and which were called macOS?
Up to El Capitan 10.11 they were OS X, and from Sierra 10.12 onward they are macOS.
Apple's own list of Mac operating system versions names the releases up to OS X El Capitan 10.11 as OS X, and the releases from macOS Sierra 10.12 onward as macOS.
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Developed By
Also in Business Atlas: the developer of this subject.
Sources
1. Wikipedia: MacOS
Infobox: released
March 24, 2001
Lead section, paragraph 2
Each of Apple's other contemporary operating systems, including iOS, iPadOS, watchOS, tvOS, audioOS and visionOS, are derivatives of macOS.
Lead section
macOS (previously OS X and originally Mac OS X) is a proprietary Unix operating system, derived from OPENSTEP for Mach and FreeBSD, which has been marketed and developed by Apple since 2001.
- In Field: Operating Systems, Lead paragraph
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