Technically, Office 2011 is considered “abandonware” by many archivists since Microsoft no longer supports it or sells keys. Downloading it from non-commercial archives is a gray area but generally tolerated for personal use.
The most reliable way to use Excel on an old Mac is through a web browser. If you have a free Microsoft account, you can use the web version of Excel for free. How to access: Open your browser (Safari, Chrome, or Firefox) and go to Office.com free excel download for mac os x 10.6.8
A: No. Excel 2016 requires OS X 10.10 or higher. The installer will refuse to run. free excel download for mac os x 10.6.8