The final version was 1.9.1 in 2008, which implemented features of Office 2007.
All subsequent releases of Microsoft Word for Macintosh, as well as all Windows versions, can read and write in RTF format. The first RTF reader and writer shipped in 1987 as part of Microsoft Word 3.0 for Macintosh, which implemented the RTF version 1.0 specification. Richard Brodie, Charles Simonyi, and David Luebbert, members of the Microsoft Word development team, developed the original RTF in the middle to late 1980s.