A word processing program, a spreadsheet tool, presentation software, an email program, and other tools are all included in the Microsoft Office suite. It’s among the most widely used software suites in the world and is sometimes referred to as the MS Office suite. However, it does face competition from other commercial programs, including some from Apple and Google, as well as from open source software like LibreOffice. Both local use on a computer and use on a web browser are options for some of the Microsoft software.