- Windows 7 - 2010 - scheduled release
- Windows Server 2008 - February 27, 2008
- Windows Vista - November 30, 2006
- Windows XP - October 2001 - xp lite extended to 2010? windows news.blogs techtarget.com
- Windows 2000 - February 2000
- Windows Me - September 2000
- Windows 98 - June 25, 1998,
- Windows NT 4.0 -July 29, 1996 info
- Windows 95 - August 24 1995 -
- Windows NT 3.1 - June 1992
- Windows 3.0 - May 22, 1990 Introduction to Microsoft Windows and it's History
- OS/2 1.0 -April 1987
- Mac OS - 1984
- Apple Lisa - 1983
- MS-DOS & PC-DOS- 1981 - 2000
- CP/M or GEOS -1977
- Apple DOS - June 1978
- IBM DOS/360 - 1970
Timeline of computing 1990–present
Timeline_of_computing_1980-1989
History of computing devices 500 BC-1979
History of Spreadsheets
- Excel 2007 (included in Office 2007) - 2007
- Excel 2003 (included in Office 2003) - 2003
- Excel 2002 (included in Office XP) - 2001
- Excel 2000 (included in Office 2000) - 1999
- Excel 97 (included in Office 97) - 1997
- Excel 95 (included in Office 95) - 1995
- Excel 5.0 - December 14, 1993
- Excel 4.0 - April 1, 1992
- Excel 3.0 - September 12, 1990
- Excel 2.0 - October 31, 1987
- Excel 1.0 - 1985-1988 - XLS
- Lotus 123 - 1983 - WK1 WK3 WK4
- Visicalc - 1979-1985
- Multiplan - 1982
- Word 2008
- Word 2007
- Word 2004
- Word 2003
- Word 2002/XP
- Word 2001/Word X
- Word 2000
- Word 98
- Word 97
- Word 1990 to 1995
- Word 1981 to 1989
- Word Perfect
- XyWrite
- Wordstar - 1978
"A generation which ignores history has no past and no future".
Sci-Fi writer Robert A. Heinlein