Unfortunately, a lot of my software solutions do not translate well to the Mac. There isn't as large a freeware community for the Mac, although it has gotten better recently. I can leverage the Unix side with open source stuff, but that sort-of defeats the whole "it just works" thing. If you are looking for useful Mac software, here is a good list of free stuff, although it is old (search for the products, as the links take you elsewhere in the internet archive).
Oh, yeah. The title of this post is "Mac antivirus software." I guess I better talk about that. My wife mentioned that she thought her Mac must have a virus since it has been running slower lately. I am not entirely convinced. If it was a PC then I would come to that conclusion, but she doesn't seem likely to have fallen for a trojan and that is about all that is available for a Mac, right? Anyway, I did look to see if there were any free anti-virus software available for Macs, since we can't get free licenses from my school anymore. Turns out, there are two popular ones:
Of course, there are some others you can find through Googling (funny how that works). One thing you can also find by Googling is the discussion about whether Mac anti-virus software helps or hurts, since the software itself may introduce vulnerabilities and/or systems slowdowns. Interesting.