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 · Use any of these methods to download and install current or previous versions of the Mac operating system on compatible Mac computers. Each macOS includes the latest built-in apps …
Complete macOS versions history 2001-2026: Dates, features ...
Mar 26, 2026 · Explore every macOS version from Mac OS X Cheetah to macOS 26 Tahoe, with release dates, features, names, and the versions still supported.
macOS 27: Everything We Know | MacRumors
Apr 28, 2026 · macOS 27 is the updated version of macOS that Apple will introduce in June and then launch in September 2026.
macOS 27 set to launch with three huge new features — and no ...
May 11, 2026 · macOS 27 is set to be unveiled at WWDC 2026, and rumors are pointing to a "Snow Leopard" focus on stability, a crucial Liquid Glass redesign and an AI-powered Safari.
OS - macOS Tahoe - Apple
Take hundreds of actions in Spotlight without lifting your hands off the keyboard. Reimagined with Liquid Glass, macOS Tahoe is at once fresh and familiar. Apps bring more focus to your content. You can …
Apple rolls out macOS 26.5 RC, here’s what’s coming - 9to5Mac
May 4, 2026 · Developers can now download the first Release Candidate of macOS 26.5, ahead of the official rollout in the coming days. Here’s what's coming.