macOS - Wikipedia
macOS (previously OS X and originally Mac OS X) is a proprietary Unix [6][7] operating system, derived from OPENSTEP for Mach and FreeBSD, which has been marketed and developed by Apple since …
How to download and install macOS - Apple Support
Mar 4, 2026 · Download and install current or previous versions of the Mac operating system on compatible Mac computers.
Complete macOS versions history 2001-2026: Dates, features & support
Mar 26, 2026 · Below is a complete overview of macOS versions, showing how Apple’s desktop operating system has developed over time, along with the official names and internal codenames …
The full list of all macOS versions until 2026 - Setapp
Mar 4, 2026 · Learn about all macOS versions Apple has ever released, including the latest macOS Sequoia.
What is macOS: Guide to Apple’s Operating System
Mar 3, 2025 · macOS is a Unix-based operating system developed by Apple Inc. for its line of Mac computers. It serves as the primary interface between the user and the hardware, managing …
All macOS Software Versions in Order Until 2026 - Beebom
From 2001 to 2026, Apple has released a total of 22 Mac operating system versions. Here are all macOS software versions in order until 2026.
Apple macOS: everything you need to know about the major Windows …
Oct 17, 2025 · MacOS is essentially a condensed way of saying an operating system that runs on Mac computers. Before we dig into what makes macOS special, or sets it apart from alternatives such as...
macOS Tahoe: Everything We Know | MacRumors
Mar 13, 2026 · macOS Tahoe 26 is the latest version of macOS, the operating system that runs on the Mac. macOS 26 follows macOS 15, with Apple streamlining the numbering for all of its operating...
MacOS | Facts & History | Britannica
Feb 20, 2026 · MacOS, operating system developed by the American computer company Apple Inc. The OS was introduced in 1984 to run the company’s Macintosh line of personal computers, which …