All versions have of Avast have free and paid options and this is no exception: Avast! Internet Security 5.0 costs $ 59.95 and provides antivirus and anti spyware, rootkit detection in real time, firewall and spam filters and anti scam, and can be installed on up to three computers.
The free option is by far the most popular for obvious reasons, and yet offers very good potential of detection files (in addition to having greatly improved its perfomance and resource consumption) has a shortfall that the Pro version (39 , $ 95) offers: sandboxing.
This spectacular new feature allows us to “isolate” the web browser, protecting it from any threat that may arise during our session, which adds an extra layer of protection that will be very useful in many cases, as when we give someone our computer.
Avast 5.0 Free can be downloaded free from the official website [ or through the Google Pack, which since last week includes among in Google pack. Compatible with Windows 7, Vista and XP.