Microsoft

October 25, 2001

Microsoft releases the operating system Windows XP, the successor to both Windows 2000 and Windows ME. Designed to unify the Windows NT line and Windows 95 line of operating systems, Windows XP was not replaced by Microsoft until January 2007 with Windows Vista. However, with a nearly six-year run and the public debacle surrounding the release of Windows Vista, Windows XP remained the world’s most popular operating system until August 2012.

September 29, 1983

Microsoft releases their first software application, Microsoft Word 1.0. For use with MS-DOS compatible systems, Word was the first word processing software to make extensive use of a computer mouse. Not coincidentally, Microsoft had released a computer mouse for IBM-compatible PCs earlier in the year. A demo version was also included for free with a copy of PC World magazine, marking the first time a floppy disk was included with a magazine.