Microsoft Office for Windows started in October 1990 as a bundle of three applications designed for Microsoft Windows 3.0: Microsoft Word for Windows 1.1, Microsoft Excel for Windows 2.0, and Microsoft PowerPoint for Windows 2.0.
Prior to packaging its various office-type Mac OS software applications into Office, Microsoft released Mac versions of Word 1.0 in 1984, the first year of the Macintosh computer; Excel 1.0 in 1985; and PowerPoint 1.0 in 1987. Microsoft does not include its Access database application in Office for Mac.
Microsoft Office for Mac was introduced for Mac OS in 1989, before Office was released for Windows. It included Word 4.0, Excel 2.2, PowerPoint 2.01, and Mail 1.37.