Top Ten Macintosh Operating Systems

1 System 1

This started it all

2 System 2

3 System 3

4 System 4

5 System 6

6 OSX 10

7 System/Mac OS 7

8 Mac OS 8

9 Mac OS 9

10 OSX 10.10

The Contenders

11 OSX 10.1

12 OSX 10.5

13 OSX 10.8

14 OSX 10.9

15 OSX 10.11

16 OSX 10.2

17 OSX 10.3

18 OSX 10.4

19 OSX 10.6

20 OSX 10.7

21 OSX 10.14

22 macOS Big Sur (11)