1. Avast Free Antivirus: A free Antivirus consistently appearing in the Top 5 and Top 10 Lists. Provides comprehensive real time protection to your computer from most virus threats. Avast also provides a paid version of the antivirus, which includes features like SafeZone to protect your online bank accounts private, Sandbox, Firewall and Spam Filters. [Direct Link].
  2. AVG Free Antivirus: Great performance, good features. Provides social netowrk protection on websites like Facebook, Twitter etc. It was also rated as the top free Antivirus by independent agency AV-Test in 2010. Also includes effective identity protection to safeguard your privacy. [Direct Link]
  3. Microsoft Security Essentials: Provides real-time protection for your home or small business PC that guards against viruses, spyware, and other malicious software. A free download from Microsoft that is simple to install, easy to use, and is automatically updated to protect your PC with the latest technology. [Direct Link]
  4. Avira Antivirus Personal: Real Time Protection from Malware and Viruses. Clean Interface and moderate virus detection and removal capabilities. Can be considered in case you dislike other options for one reason or the other. [Direct link]
  5. Comodo Antivirus Free: Freeware Antivirus software from Comodo, the company knoen best for their popular firewall applications. A decent threat detection and removal rate, good user-friendly interface. Comodo Free Antivirus claims to be using Defense+ feature, which combines two unique and powerful technologies, Default Deny Protection™ and Auto Sandbox Technology™ to prevent infections, not just detect them. [Direct Link]
  6. Panda Cloud Antivirus: An antivirus software by Panda Security; a free and a paid version are available. It is cloud-based in the sense that files are scanned on a remote server without using processing power of the user’s machine. The cloud technology is based on Panda’s Collective Intelligence. It can run constantly, providing protection against viruses and malicious websites but slowing the system to some extent as all such software does, or do a system scan. [Direct Link]
  7. KingSoft Cloud Antivirus: Kingsoft Free Antivirus provides effective and efficient protection solutions with faster operation and lower CPU utilization. Its advanced anti-virus tool detects emerging threats and removes hidden threats from your computer. The comprehensive defender ensures your computer’s security from any potential risk. It also provides you with several convenient tools, such as USB Device Protection, IM Protection, Disk Cleaner, History Cleaner, LSP Repair and so on. [Direct Link]
  8. Rising Free Antivirus: RISING Antivirus Free Edition protects your computers against all types of viruses, Trojans, Worms, Rootkits and other malicious programs. Easy to use, Active Defense technology, Patented Unknown Virus Scan and Clean technology and Patented Smartupdate technology make RISING Antivirus install and forget product and entitles you to focus on your own jobs with your computer. [Direct Link]
  9. PC Tools Antivirus FreeProtection from known viruses, worms, Trojans and other threats while defending against spyware, adware, bots, keyloggers and other malware. The virus definitions are regularly updated, and it even includes some useful extras like phishing alerts, Web site ratings, and adware and malware protection. [Direct Link]
  10. Zillya Free Antivirus: Zillya Antivirus detects and eliminates all kinds of viruses, worms, trojans and rootkits along with other malware that might make computer fail, cause system errors, reduce performance and might even destroy or expose to 3rd parties users’ data. It has a separate module that detects and removes spyware and adware applications. [Direct Link]