Originally Posted by
msflames3
Xenix (licensed version of Unix; licensed to SCO in 1987)
MSX-DOS (developed by MS Japan for the MSX 8-bit computer)
MS-DOS (developed jointly with IBM, versions 1.0–6.22)
Windows 1.0 (Windows 1 - Based on Visi-On) April 30, 1985
Windows 2.0 (Windows 2) May 25, 1988
Windows 3.0 (Windows 3 - Is the first version of Windows to make substantial commercial impact) August 29, 1990
Windows 3.1x (Windows 3.1) March 18, 1992
Windows 3.2 (Chinese-only release) November 19, 1992
Windows for Workgroups 3.11 January 21, 1993
Windows 95 (Windows 4) August 24, 1995
Windows Chicago May 18, 1995
Windows Utopia June 19, 1997
Windows Plus! November 13, 1997
Windows 98 (Windows 4.1) June 25, 1998
Windows Me***is July 24, 1997
Windows Millennium Edition (Windows Me - Windows 4.9) September 14, 2000
OS/2 (developed jointly with IBM) October 24, 1996
Windows NT 3.1 (OS/2 3.0 - Windows 3.1) March 31, 1994
Windows NT 3.5 (Windows 3.5) December 29, 1994
Windows NT 3.51 (Windows 3.51) February 8, 1995
Windows 95 64-Bit Edition March 20, 1997
Windows NT 4.0 (Windows 4) February 21, 1996
Windows 2000 (Windows NT 5.0 - Windows 5) February 29, 2000
Windows XP October 22, 2001
Windows Whistler December 28, 2000
Windows V-smile July 13, 2006
Windows Neptune November 10, 1999
Windows Odyssey April 5, 2001
Windows Trident September 11, 2001
Windows Server 2003 October 28, 2003
Windows Fundamentals for Legacy PCs March 24, 2005
Windows Vista January 26, 2006
Windows Home Server April 19, 2007
Windows Server 2008 September 29, 2008
Windows 7 October 26, 2009
Windows Preinstallation Environment (WinPE) April 13, 2009
~credits to wikipedia.
i didnt bother pasting CE cuz that was a fail :P
On-topic: Acid, nice hack, wish i could make a cool gui like that