Computer protection software review

This topic is for privacy software, anti spyware reviews. This way we will find out what tool is the best. Please, post to this topic if you know good programs to use.

This is the example: ViaCleaner (to delete history, cookies, etc.) – http://www.viaclean.com

I work for an ISP. Our tech support department and admins like Grisoft's AVG. It's free for personal use (for all but win2K) and has all the features other high-dollar softwares do.

And of course, Lavasoft and Spybot.

Thank's for information