i use Avast
free malware protection. I think they work fine. I don't really need one anyways since I'm not always downloading risky files on The Pirate Bay or anything like that.
Avast is rather good if you are not waiting for something special from this antivirus and antimalware software.
Avast is great, I am using it too now. The free version has a lot of features. In my opinion is a good antivirus program for everyone you doesn't want to pay and just uses a free software.