Timeline of operating systems By denisrdd Nov 20, 1985 Windows 1.0 Nov 1, 1987 Windows 2.0 May 22, 1990 Windows 3.0 Apr 18, 1992 Windows 3.1 Oct 1, 1992 Windows for workgroups 3.1 Jul 27, 1993 Windows NT 3.1 Aug 11, 1993 Windows for workgroups 3.11 Jan 1, 1994 Windows 3.2 Sep 21, 1994 Windows NT 3.5 May 30, 1995 Windows NT 3.51 Aug 24, 1995 Windows 95 Jul 29, 1996 Windows NT 4.0 Jun 25, 1998 Windows 98 May 5, 1999 Windows 98 SE Feb 17, 2000 Windows 2000 Sep 14, 2000 Windows Me Oct 25, 2001 Windows XP Mar 28, 2003 Windows XP 64 bit edition Apr 24, 2003 Windows Server 2003 Apr 25, 2005 Windows XP Professional x64 edition Sep 8, 2006 Windows Fundamentals for legacy PCs Nov 8, 2006 Windows Vista Jul 16, 2007 Windows Home Server Feb 27, 2008 Windows Server 2008 Oct 22, 2009 Windows 7 Oct 26, 2012 Windows 8 Oct 17, 2013 Windows 8.1 Jul 29, 2015 Windows 10