Exceedingly popular, AVG Free offers rock-solid protection, but only the bare necessities. The security features include a real-time shield to prevent infections, antivirus and antimalware wrapped up in one engine, and a link scanner for Web surfing with care.
By default, AVG is set to search for new virus definitions daily, but you can always use the scheduling tool to change this. Should a virus create serious system problems, AVG creates a rescue disk to scan your computer in MS-DOS mode. The program doesn't tax your system when scanning or when running in the background, and it always proved effective in our tests. The new interface is much easier to navigate than in previous version, with tabbed navigation on the left assisting users in drilling down to the tools they need.