Excel for Mac OS X support
We are currently evaluating development of an add-in for Excel for Mac 2011. This will allow cross-platform sharing of data between Excel for Windows, Excel for Mac, and Google Sheets users.
In the meantime, we recommend that Mac users run Excel in Windows via Parallels. Alternatively, you can use our Google Sheets add-on.
If this is something you have a large need for, or are more interested in hearing details, please contact us so we are sure the developed product meets your needs!