Free Anti Virus Programs
AVG Free Edition
One of the most respected and oldest free antivirus program out there, AVG Free Edition is user friendly, it offers automatic updates, real time protection called AVG Resident Shield to provide maximum protection by scanning every file opened, and quarantine of infected files.
Free avast! Home Edition
Avast Virus Cleaner removes viruses and worms from your computer. It has resident protection (the real-time protection of the operating system), file system protection to ensure that no virus will be started on the computer, heuristic analysis of e-mail scanners, protection from Instant Messaging and P2P virus and offers automatic updates.
Microsoft Security Essentials
Although relatively new to the antivirus & antispyware scene, Microsoft is a brand most people are familiar with and their free antivirus is a competent alternative to many more expensive solutions. It is free, lightweight, comprehensive and stays updated.
a-squared is a complementary product to antivirus software and desktop firewalls on MS Windows computers. Antivirus software specializes in detecting classic viruses. Many available products have weaknesses in detecting other malicious software (Malware) like Trojans, Dialers, Worms and Spyware (Adware). a-squared fills the gap that malware writers exploit.
AntiVir PersonalEdition Classic
AntiVir detects and removes more than 80,000 viruses. It scans and repairs macro viruses, offers protection against previously unknown macro viruses, safeguard against cost generating dial-up program, protection against trojans, worms, backdoors and other harmful programs and offers automatic updates.