Versions for Microsoft Windows OS
* August 30, 1992: Office 3.0 (CD-ROM version: Word 2.0c, Excel 4.0a, PowerPoint 3.0, Mail): (repackaged as Office 92).
* January 17, 1994: Office 4.0 (Word 6.0, Excel 4.0, PowerPoint 3.0).
* July 3, 1994: Office for NT 4.2 (Word 6.0 [32-bit, i386 and Alpha], Excel 5.0 [32-bit, i386 and Alpha], PowerPoint 4.0 [16-bit], "Microsoft Office Manager").
* June 2, 1994: Office 4.3 (the last 16-bit version; Word 6.0, Excel 5.0, PowerPoint 4.0, Mail 3.2 and in the pro version, Access 2.0. Last version to support Windows 3.x and Windows NT 3.1 and 3.5.
* August 30, 1995: Office 95 (7.0) (Word 7 for Windows 95, etc.) - coincided with the Windows 95 release.
* December 30, 1996: Office 97 (8.0) (Word 97, etc.) (was published on CD-ROM as well as on a set of 45 3½-inch floppy disks), was Y2K safe with Service Release 2. Last version to support Windows NT 3.51.
* January 27, 1999: Office 2000 (9.0) (Word 2000, etc.). Last version to support Windows 95, and last version that lacks Windows Product Activation.
* May 31, 2001: Office XP (10.0) (Word 2002, etc.). Last version to support Windows 98/ME/NT 4. Improved support for working in restricted accounts under Windows 2000/XP.
* November 17, 2003: Office 2003 (11.0) (Word 2003, etc.). Last version to support Windows 2000.
* January 30, 2007: Office 2007 (12.0) (Word 2007, etc.). Broadly released alongside Windows Vista, Microsoft's newest operating system.
* Unknown (possibly the first half of 2009):[8] Office 14. There will be no Microsoft Office 13 due to superstition. [6]