0
Windows 1.0
Windows 2.0
Windows 3.0
Windows NT 3.1
Windows NT 3.5
Windows 95
Windows 98
Windows 2000
Windows ME
Windows XP
Windows Vista
Windows 7
Source
Windows 2.0
Windows 3.0
Windows NT 3.1
Windows NT 3.5
Windows 95
Windows 98
Windows 2000
Windows ME
Windows XP
Windows Vista
Windows 7
Source