Office has equations that you can readily insert into your documents. Excel for Microsoft 365 Word for Microsoft 365 Outlook for Microsoft 365 PowerPoint for Microsoft 365 Excel for Microsoft 365 for Mac Word for Microsoft 365 for Mac Excel 2021 Word 2021 Outlook 2021 PowerPoint 2021 OneNote 2021 Excel 2021 for Mac Excel 2019 Word 2019 Outlook 2019 PowerPoint 2019 Excel 2019 for Mac Excel 2016 Word 2016 Outlook 2016 PowerPoint 2016 OneNote 2016 Excel 2016 for Mac Excel 2013 Word 2013 Outlook 2013 PowerPoint 2013 OneNote 2013 Excel 2010 Word 2010 Outlook 2010 PowerPoint 2010 OneNote 2010 Excel 2007 Word 2007 Outlook 2007 More.