Free
Download Mac-Cel.
Mac-Cel is a free professional Office add-in suite. Install it for Excel and PowerPoint on Microsoft 365, or browse the source on GitHub.
* Windows support is in verification; talk to us about your environment.
Install
Download the latest release, then sideload the add-in into Excel and PowerPoint for Microsoft 365. Step-by-step install notes live with the release on GitHub.
Developed Mac-first. Windows support is in verification; talk to us about your environment.
Source on GitHub
The Mac-Cel repository is public. Issues, releases, and install instructions are there.