Microsoft 365 is a family of productivity software, collaboration and cloud-based services, encompassing online services, products formerly marketed under Microsoft Office, and enterprise products and services. This list contains all the programs that are, or have been, in Microsoft Office since it was released for classic Mac OS in 1989, and for Windows in 1990. Certain products, such as Microsoft Word and Excel, can date back even further, with the first products on the list released in 1983, but they were sold as individual products.
This list includes programs from before Microsoft Office was rebranded as Office 365 (and eventually given its current title of Microsoft 365).