Apple unveils Mac OS X 10.8 Mountain Lion coming this summer with 100+ new features | AppleInsider
The evolution of macOS (and Mac OS X) | Computerworld
The evolution of macOS (and Mac OS X) | Computerworld
macOS - Wikipedia
Mac OS X running on Apple TV - Apple TV Hacks
Apple's Mac OS X First Shipped 20 Years Ago Today | Redmond Pie
Mac OS X turns 20: Most important software in Apple history | Cult of Mac
Apple's Mac OS X is 20 years old: Here's why it endured for 19 of them
News: Apple renames Mac OS X to OS X with the Mountain Lion update
How to Change an Apple ID & iCloud Account in Mac OS X | OSXDaily
OS X Mountain Lion - Apple
Mac OS X Jaguar - Wikipedia
Timeline of Key Features Added to Every Mac OS X Release to Date - The Mac Security Blog
Apple to rebrand OS X as 'macOS' at WWDC
22 Years of Mac OS X Design History - 59 Images - Version Museum
/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
Chapter 3. Learning Mac OS X Basics
March 24, 2001: Apple Unleashes Mac OS X | WIRED
