Microsoft Security Essentials.....fast, light, unobtrusive, and powerful enough to get the job done

Avira Free Antivirus

I would recommend Avira with Komodo Firewall and SpyBot search and destroy for mallaware.

I like avast, very good

I use Avast free for the past year and i am more than satisfied!

Avast, AVG and Avira is a good choice

AVG is the best freeware AV. i use to work in a pc shop and if the customers didnt have a AV we installed that for them.

Avast! is great, but not good for really bad PC.

Best free AV? ...... cracked Nod32 of course

MSE / Avast are very good.

I prefer AVG.