Twenty Years of Mac OS X – Scripting OS X
Mac OS X turns 20: Most important software in Apple history | Cult of Mac
Mac OS X Leopard - Wikipedia
From Aqua to Catalina: The evolution of macOS X | Macworld
Mac OS X 10.5 Leopard review: Mac OS X 10.5 Leopard - CNET
Here's A First Look At Mac OS X 10.11 El Capitan | TechCrunch
Apple macOS versions: everything you need to know | TechRadar
How Mac OS X Works | HowStuffWorks
From Win32 to Cocoa: A Windows user's would-be conversion to Mac OS X | Ars Technica
Find out which macOS your Mac is using - Apple Support
The evolution of macOS (and Mac OS X) | Computerworld
macOS - Wikipedia
Mac OS X and macOS: Every version released so far | Macworld
macOS - Wikipedia
The full list of all macOS versions until 2023
Apple's Mac OS X First Shipped 20 Years Ago Today | Redmond Pie
