Personally, I don't know if there is any CAT software for Mac. When I bought my Elan Cybra, it came with Case CATalyst version 10 for the PC. So I decided to see if I could install it on my MacBook Pro (Intel Core i5, Mac OS X version 10.6.7). I already had installed VirtualBox on my Mac (with Windows XP) to run Windows software, if necessary.
Please note that Case CATalyst only recommends installing Case CATalyst on BootCamp and does not recommend installing Case CATalyst on a virtual machine like Parallels Desktop or VMware Fusion (or VirtualBox).
However, I have been able to install the Case CATalyst software on VirtualBox, connect the blue security device and my Elan Cybra (and the Stentura 400 SRT) to my Mac and Case CATalyst program without any noticeable problem. I must note that I am new to the program and have not tried all aspects of the program. But it seems to work just fine.