Hey MacLover2000,
It’s radicalb21. Here is what I found:

“Considering its robust design, it is primarily intended for Linux-based servers; however, it can easily be used on desktop computers as well.”

I hope this helps. Also here is a link to the linux page:

http://www.avast.com/eng/avast_for_linux.html

Can’t wait to hear what you have to report from MacWorld.