The history of macOS, Apple 's current Mac operating system formerly named Mac OS X until 2011 and then OS X until 2016, began with the company's project to replace its classic Mac OS.

Nov 24, 2025 · Learn about all macOS versions Apple has ever released, including the latest macOS Sequoia.

Use About This Mac to see the version of Mac operating system installed on your Mac.

Sep 28, 2025 · Here's the complete list of all macOS versions released from 2001 to 2025. From macOS Cheetah to macOS Tahoe, find yours here.

Sep 5, 2024 · So, below, we have listed all macOS versions in the order of release from 2001 to 2025, along with important features.

Sep 30, 2025 · Whether you’re checking compatibility for an older Mac, planning an upgrade, or simply curious about Apple’s OS history, you’ll find every version with release dates, support …

May 25, 2025 · Here is the complete list of macOS versions in order from Mac OS X Cheetah (2001) to macOS Sequoia (2024) with release dates, codenames, etc.

Aug 17, 2025 · Including the initial public beta, Apple has released 22 major versions of the Mac operating system so far, with new launches now becoming an annual occurrence and kicking …

Sep 13, 2024 · Apple’s macOS has continually evolved, introducing features that enhance user experience and system functionality. From the revolutionary Aqua interface to modern utilities …

Jul 28, 2025 · Explore the complete history of macOS from Cheetah to Tahoe. Learn about every macOS version ever released, their codenames, release dates, and which versions are still …