Here is a link that I'm posting that has some very good Free Programs including recommendations for security. I think you'll find some great programs listed for all kinds of different applications. I think most are open source and as i said above FREE. Enjoy
I use several of these Apps. and Programs that are recommended here, and am Happy with them all.
The Editors' Choice List: Our Selection of the Best PC Freeware
Last updated yesterday 06/10/09.