Windows DOS

Windows public beta

Jun 1, 1980

Windows 1.0

Period: Nov 20, 1981 to Dec 31, 2001

Windows 2.0

Period: Dec 9, 1985 to Dec 31, 2001

Windows 3.0

Period: May 22, 1987 to Dec 31, 2001

Windows 3.1

Period: Apr 6, 1989 to Dec 31, 2001

Windows 95

Period: Aug 15, 1995 to Dec 31, 2002

internally Windows 4.0

Windows 98

Period: May 15, 1998 to Jul 11, 2004

internally Windows 4.1

Windows ME

Period: Jun 19, 2000 to Jul 13, 2008

internally Windows 4.9

Windows XP

Period: Aug 24, 2001 to Apr 14, 2009

internally Windows 5.1