For Mac OS X El Capitan 10.11, the last working builds are:
If you prefer Apple's design philosophy, iWork is a polished and powerful option. For Mac OS X El Capitan 10
The last version of Microsoft Office compatible with is Office 2016 (specifically version 16.16.27 ). Newer versions like Office 2019, 2021, and modern Microsoft 365 subscriptions require macOS 10.12 Sierra or later. Compatible Office Versions For Mac OS X El Capitan 10
Double-click the downloaded .pkg file (usually named Microsoft_Office_2016_16.16.20101200_Installer.pkg ). For Mac OS X El Capitan 10