Avast Free Antivirus
A newer version of Avast Free Antivirus is available.Or, Learn More About Avast Free Antivirus
Full user review
"Best of the Best"
It's free and it's best among all the other free antivirus software.
Periodical reminders that your Avast is Up-to-Date. (oh well, it's free, I can't complain).
Better than Avira.
Better than AVG.
Better than MalwareBytes
Better than AdAware
Better than Advanced System Care