CHESSSS is partly compatible with Microsoft Office for Mac. Actually, you will be able to get the structural summary and use it in clinical practice. However, Office for Mac is slightly different from Microsoft Office, and it is not possible to save protocols in the genuine CHESSSS format (.ches files) using Office for Mac. It means that the whole CHESSSS application is stored in each protocol saved with Office for Mac. Therefore, it is not possible to use CHESSSS advanced functions (Kappa & Databases), and most importantly it is very difficult to use or install CHESSSS updates.
Then install a virtual Windows machine in Parallels Desktop or Virtual Box (Windows XP, Vista, Seven or Windows 8). We recommend to install Windows XP Service Pack 3 because this Operating System is less demanding.
Once you have a Windows virtual machine on your Mac, install Microsoft Office (2007, 2010 or 2013). We recommend to use Office 2007.
Finally, download CHESSSS on the virtual machine, and use it with Microsoft Office.