Free Antivirus Software

Best Free Antivirus Software:

- avast!
- Microsoft Security Essentials
- Avira
- Malwarebytes
- AVG Anti-Virus
- Comodo
- ClamAV
- Trend Micro

Not free:

- Online Armor ++
- Sophos
- Panda
- Norton
- MacAffee
- KasperSky

Notes:

- AV_TEST: The Independent IT-Security Institute. It is an independent organization which evaluates and 

rates antivirus and security suite software.

- http://www.techsupportalert.com/best-free-anti-virus-software.htm
- The biggest win for Comodo Internet Security Complete 2013 isn't in features, but in support.
- Process Tamer:
Is a tiny (140k) and super efficient utility for Microsoft Windows XP/2K/NT/Vista/Win7 that runs in 

your system tray and constantly monitors the cpu usage of other processes. When it sees a process that is 

overloading your cpu, it reduces the priority of that process temporarily, until its cpu usage returns to a 

reasonable level.
- It is not a good idea to have more than one antivirus program running at the same time.
- If you’re even just a little bit cautious and knowledgeable about internet security, Microsoft Security 

Essentials should work just fine for you.
- Microsoft Active Protection Service is the online community that helps you choose how to respond to 

potential threats.
- Microsoft boost MSE:
* http://blogs.msdn.com/b/securitytipstalk/archive/2010/09/08/do-i-need-both-microsoft-security-

essentials-and-another-antivirus-software-program.aspx
* http://news.softpedia.com/news/Microsoft-Security-Essentials-Needs-to-Fly-Solo-155974.shtml