There are a number of very good best free antivirus programs available from a variety of sources. When considering free antivirus software be sure it is as good as a paid program or look elsewhere, because free does not have to mean low quality or limited features as you will see from the following selections.

Comodo AntiVirus (Comodo) This great free antivirus application can eliminates viruses, trojans and even worms from both desktops and networks. It offers constant protection with on-access scanning working in real-time. A powerful feature is the proactive heuristic analysis that can even intercept unknown threats. Updates of virus definitions are provided automatically on a daily basis. Any suspicious files it identifies are isolated in quarantine thereby preventing infection. This antivirus software is very easy to install and use. We have used this on all of our test systems and currently use it on a number of our computers! >> Windows XP(SP2) 2000(SP4)

PC Tools AntiVirus Free Edition (PC Tools) This is a new free antivirus application from PC Tools. It can detect, quarantine, disinfect and destroy viruses, worms and trojans. This free edition even includes real-time protection and comprehensive system screening to keep your system running safe and virus free. >> Windows Vista XP 2000

McAfee Security Center (AOLMcAfee) This free product is offered free by AOL. You need to complete a free registration to get this product but the few minutes spent are well worth it. This is a multi purpose suite that includes antivirus, firewall and antispyware components. >> Windows Vista XP 2000

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AVG Anti Virus Version 7.5 Free Edition (Grisoft) Download the new version 7.5 of this top free antivirus product. This new version has an improved virus detection engine based on more accurate heuristics and NTFS data stream scanning. It also has a smaller installation ‘footprint’ and an improved user interface. >> Windows Vista XP(SP2) 2000(SP4) NT(SP6a) ME 98SE

avast! 4 Antivirus Free Home Edition (Alwil) This antivirus program is available free for home users. It is a complete antivirus solution and will do a great job protecting your computer from viruses. This newest version features better detection levels, together with higher performance. You can expect 100% detection of ‘In-the-Wild’ viruses (viruses already spreading between users) and even excellent detection of trojan horses. >> Windows Vista XP 2000 NT(SP4) ME 98 95

AntiVir PersonalEdition (Avira) Use this antivirus download free! It can reliably protects your private computer against dangerous viruses, worms, Trojans and costly dialers. This program uses very few computer resources so is especially good for older computers. AntiVir can run in Windows Safe Mode so can be helpful if you are unable to get Windows to boot! >> Windows Vista XP 2000 ME 98

To get the easy download links for these and other top free antivirus products visit http:freeinternetsecuritysoftware.comfree-antivirus-software where over a dozen great free antivirus products are featured. You will also find top free security software in other categories (firewall, antispyware etc.) throughout the website.

The author Dave Jacobs has had a love-hate relationship with computers ever since he purchased his first computer, a Commodore 64 in the early 80′s. Many years and a long learning curve have brought him to the point that he is able to share some of what he has learned, on a wide range of topics, with fellow computer enthusiasts around the world.