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Windows 1.0
Windows 1.0 was released 11/20/1985 -
Windows 2.0
Windows 2.0 was released 12/9/1987 -
Windows 3.0
Windows 3.0 was released 5/22/1990 -
Windows for Workgroups 3.1
Windows for Workgroups 3.1 was released 10/27/1992 -
Windows NT 3.1
Windows NT 3.1 7/27/1993 -
Windows 95
Windows 95 was released 8/27/1995 -
Windows NT 4.0
Windows NT 4.0 was released 8/24/1996 -
Windows 98
Windows 98 was released 6/25/1998 -
Windows 98 SE
Windows 98 SE was released 4/25/1999 -
Windows 2000
Windows 2000 was released 2/17/2000 -
Windows ME
Windows ME was released 9/14/2000 -
Windows XP
Windows XP was released 10/25/2001 -
Windows XP Professional x64 Edition
Windows XP Professional x64 Edition was released 4/25/2005 -
Windows Vista
Windows Vista was released 11/30/2006 -
Windows 7
Windows 7 was released 10/22/2009 -
Windows 8
Windows 8 was released 10/26/2012 -
Windows 10
Windows 10 was released 7/29/2015