Here is a list of links to different pages and articles on Low End Mac about the various different operating systems which ran on Macs.

80s Mac OS

• System 1.0
• System 2.0
• System 3.0
• System 4.0

90s Mac OS

• System 5
• System 6
• System 7
• Mac OS 7.5 – 7.6
• Mac OS 8
• Mac OS 9
• Articles:
  • A brief history of Mac OS
  • Mac OS 9 Isn’t dead yet
  • Mac OS 9 is Still Alive and Kicking.. and That’s Not a Bad Thing

Mac OS X

• Mac OS X 10.0 Cheetah
• Mac OS X 10.1 Puma
• Mac OS X 10.2 Jaguar
• Mac OS X 10.3 Panther
• Mac OS X 10.4 Tiger
• Mac OS X 10.5 Leopard
• Mac OS X 10.6 – 10.6.8 Snow Leopard for PowerPC

Mac OS X (Intel)

• Mac OS X 10.6 Snow Leopard
• Mac OS X 10.7 Lion

OS X (Intel)

• OS X 10.8 Mountain Lion
• OS X 10.9 Mavericks
• OS X 10.10 Yosemite
• OS X 10.11 El Capitan

macOS (Intel)

• macOS Sierra 10.12
• macOS High Sierra 10.13 (Not an “OS” article yet, pending..)
• macOS Mojave 10.14
• macOS Catalina 10.15 (Not an “OS” article yet, pending..)

Modern macOS

• macOS 11.0 Big Sur
• macOS 12.0 Monterey
• macOS 13.0 Ventura
• macOS 14.0 Sonoma
• macOS 15.0 Sequoia
  • macOS Versions Throughout The Years, 2025 Edition