macOS versions in order: Complete Mac OS X and macOS history

Summary

Macworld Since the debut of Mac OS X in 2001, Apple has released dozens of versions of its Mac operating system, introducing new features, design updates, performance improvements, and more. From early big-cat releases such as Panther and Leopard to more recent California-inspired versions like Sonoma, Sequoia, Tahoe and Golden Gate, each release marked a new chapter in the Mac’s evolution. Whether you’re trying to identify the version running on your Mac, check compatibility before upgrading, or find out which releases are still supported, this guide covers every Mac OS X and macOS version…

Description from Macworld.