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macOS facts for kids

Kids Encyclopedia Facts
MacOS wordmark (2017).svg
Company / developer Apple Inc.
Programmed in C, C++, Objective-C
OS family Mac OS, Unix-like (until Mac OS X 10.5), Unix (From Mac OS X 10.5)
Working state Current
Source model Closed source (with open source components)
Initial release March 24, 2001 (2001-03-24)
Latest stable release

10.15.2  (December 10, 2019; 10 months ago (2019-12-10))

Latest unstable release

10.15.2 beta 2  (December 7, 2019; 10 months ago (2019-12-07))

Marketing target Personal computing
Available language(s) Multi-lingual
Update method Apple Software Update
Mac App Store
Supported platforms
Kernel type Hybrid (XNU)
Default user interface Graphical (Aqua)
License Proprietary EULAP
Preceded by Mac OS 9

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. These are called Macintosh computers, or Macs. It differs from other computers, as macOS is supposed to run only on Macs and not on other computers. However, people have made the OS run on computers that are not Macs. This is called Hackintosh and violates macOS’ license agreement.

macOS first came out in 2001, and is completely different than the Classic Mac OS that it replaced. macOS is a UNIX OS that is based on NEXTSTEP, an older OS that Apple bought and turned into macOS. macOS and NEXTSTEP have a background in a kind of UNIX called BSD (more specifically FreeBSD and NetBSD). The core of macOS is an open source OS called Darwin, but Darwin itself cannot run macOS software.

macOS releases are named after kinds of big cats, or California landmarks, and have a version number that starts with 10.

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