The first version of
Microsoft Word was developed by
Charles Simonyi and
Richard Brodie, former
Xerox programmers hired by
Bill Gates and
Paul Allen in 1981. Both programmers worked on
Xerox Bravo, the first
WYSIWYG (What You See Is What You Get)
word processor. The first Word version, Word 1.0, was released in October 1983 for
Xenix and
MS-DOS; it was followed by four very similar versions that were not very successful. The first Windows version was released in 1989, with a slightly improved interface. When Windows 3.0 was released in 1990, Word became a huge commercial success. Word for Windows 1.0 was followed by Word 2.0 in 1991 and Word 6.0 in 1993. Then it was renamed to Word 95 and Word 97, Word 2000 and Word for
Office XP (to follow Windows commercial names). With the release of Word 2003, the numbering was again year-based. Since then, Word 2007, Word 2010, and most recently, Word 2013 have been released for Windows.