What is the best free antivirus software?

[dagsyo]

Hey all,

I was just wondering what the best free antivirus software out there is? I currently get good free antivirus through my university but I am about to graduate and the subscription will run out.

 

[PhilFrisbie]

I use AVG or Avast on my PCs.

 

[dagsyo]

Best answer selected by dagsyo.