What's good for free antivirus

[mockmonkey]

4. Malwarebytes

The free version does not work in real time it only works when you use it to scan manually.

I use free Avast for my anti-virus and I do a boot scan of my computer with that about once a week. You probably wouldn't have to if you only go to known good sites and never open attachments in e-mails even the ones saying that they are UPS or FEDEX holding a package for you. So many scams so little time.

I also use Microsoft Safety Scanner about every two weeks.

http://www.microsoft.com/security/scanner/en-us/default.aspx

I haven't used Ad-Aware in a long time, it's different from what I use to use.

I've also used AVG in the past. It worked ok.

Whatever you download watch for the little boxes that want to add crap to your computer.