Windows 2.0 Windows 3.0 Windows 3.1 Windows 95 Windows 98 Windows 2000 Windows CE Windows ME Windows NT Windows XP Vista Windows 7 Windows 8 Windows 8.1 Windows 10 Fifteen versions in 34 years. Ten versions and 24 years to get one that people considered stable.
Windows 2.0
Windows 3.0
Windows 3.1
Windows 95
Windows 98
Windows 2000
Windows CE
Windows ME
Windows NT
Windows XP
Vista
Windows 7
Windows 8
Windows 8.1
Windows 10
Fifteen versions in 34 years. Ten versions and 24 years to get one that people considered stable.