If you want, you can install any other virus-detection engine, or even build your own. ClamXav is a graphical user interface to make ClamAV easier to use.
This is one of the most unusual aspects of ClamXav: The ClamAV engine is developed and maintained by a completely different group. A snap! When you launch ClamXav, you're walked through installing the app's virus-detection engine. Just download the older, free version from the developer's website and then drag ClamXav to your Applications folder. Setup and Impact Installing ClamXav couldn't be simpler. This does have a marked effect on how fast applications operate in the virtual environment, so your experience may differ from mine.
Because I use live malware in my testing, I install the antivirus software I am evaluating in a virtual environment. In my testing, I used an Apple iMac running OS X 10.10 Yosemite. Also, please note that the version currently available in the Apple App store (2.6) is much older than the one reviewed here (2.7.5).
It's always a good idea to use the latest version of software-especially security software-so use at your own risk. Users can download 2.7.5 for free from the ClamXav website, but Allan says that although it will still receive new virus definitions, it will not receive other software updates, and may not be compatible with future updates of OS X.
