Here is the Top 10 Free Antivirus Software of 2013
1. Ad-Aware Free Antivirus
Ad-Aware Free Antivirus+ 10.5
cleaned up malware-infested test PCs with hardly a hitch, and turned in
the best malware-blocking score among recent programs.
The program is simple to install; a straightforward interface makes it
easy to use; a quick first scan should identify any potential threats on
your PC, and this all has minimal impact on your system performance.
A strong antivirus engine (rated highly by independent labs for its file
detection rates) constantly monitors your PC, looking for and
eliminating threats.
It's the free version of a commercial product, and so has a few missing
features. The Pro edition helps to protect you at public wifi networks,
for instance, while its "USB Vaccine" function reduces the risk of
malware infecting a USB drive.
The program does provide plenty of functionality, though, with a
capable, AV-Test-certified antivirus engine, an easy-to-use firewall and
some browsing protection.
The program is ultra-compact, downloading and installing in less than a
minute on our test PC (although it does demand removal of any
incompatible products first). A very basic interface then provides
effective on-demand and automatic scanning, real-time antivirus and
antiphishing protection.
At first glance this makes the program seem more complex, as there are
lots of tiles, buttons and menu entries. Smart interface design means
you can carry out most common actions in a click or two, though, so
you'll soon feel at home.
Comodo Antivirus 6 from Comodo Security Solutions is another excellent
program, easily one of the best free antivirus options out there. Comodo
Antivirus 6 protects you from several threat sources, just as most of
the other free antivirus programs on this list do.
The program can be installed in two modes. The standard option provides a
good range of tools: an antivirus engine, simple parental controls, an
application firewall, vulnerability scanning and more. But you can also
run FortiClient without its real-time protection, perfect if you need to
run it alongside an existing antivirus tool without conflicts.
Despite its name, this isn't a full internet security suite - there's no
spam filter, firewall or parental controls - but installing the program
does get you no less than three antivirus engines: BitDefender, its own
QVM II, and Cloud 360.