Microsoft Excel is a spreadsheet program which originally competed with the dominant Lotus 1-2-3, but eventually outsold it. It is available for the Windows and Mac platforms. Microsoft released the first version of Excel for the Mac in 1985, and the first Windows version (numbered 2.05 to line up with the Mac and bundled with a standalone Windows run-time environment) in November 1987.

Microsoft Outlook (not to be confused with Outlook Express) is a personal information manager and e-mail communication software. The replacement for Windows Messaging, Microsoft Mail and Schedule+ starting in Office 97, it includes an e-mail client, calendar, task manager and address book.

On the Mac, Microsoft offered several versions of Outlook in the late 1990s, but only for use with Microsoft Exchange Server. In Office 2001, it introduced an alternative application with a slightly different feature set called Microsoft Entourage. It reintroduced Outlook in Office 2011, replacing Entourage.