Find out which macOS your Mac is using - Apple Support
22 Years of Mac OS X Design History - 59 Images - Version Museum
Apple's OS X was 20 years old this week
Mac OS X Turns 20: A Look Back at the Operating System That Helped Save Apple | PCMag
Mac OS X turns 20: Most important software in Apple history | Cult of Mac
Apple unveils Mac OS X 10.8 Mountain Lion coming this summer with 100+ new features | AppleInsider
OS X Mountain Lion - Apple
20 years of Mac OS X: Here's how Apple's desktop operating system has evolved over the years | Technology News,The Indian Express
/cdn.vox-cdn.com/uploads/chorus_asset/file/20047840/mac_os_x.jpg "Big Sur is officially macOS 11.0 as Apple finally leaves OS X behind - The Verge")
Big Sur is officially macOS 11.0 as Apple finally leaves OS X behind - The Verge
Apple OS X El Capitan Review | PCMag
Mac OS X Lion is here! | iMore
Apple's Mac OS X is 20 years old: Here's why it endured for 19 of them
OS X Lion (10.7) - Apple
How to Change an Apple ID & iCloud Account in Mac OS X | OSXDaily
News: Apple renames Mac OS X to OS X with the Mountain Lion update
The evolution of macOS (and Mac OS X) | Computerworld
Mac OS X and macOS: Every version released so far | Macworld
macOS X Support Essentials — Manhattan Edit Workshop
Apple to rebrand OS X as 'macOS' at WWDC
Apple introduces macOS Big Sur with a beautiful new design - Apple
