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None of the popular free anti-virus programs, Avast, AVG, and Avira, are perfect, as you can see from the test results above. When downloading files from the Internet, Avast and AVG scored "very fast" and Avira slipped to "fast". AVG slowed the installation/uninstallation of programs slightly more than Avast and Avira did, but was still rated as "fast". Avast, AVG and Avira were all rated "very fast" in most cases, meaning they had less than a 10 percent impact on overall system performance. AV-Comparatives tested this impact on a number of computer functions such as file copying, archiving/unarchiving, encoding/transcoding, installing/uninstalling applications, launching applications, and downloading files. Impact on system performance is important when running an antimalware program constantly (as you should). In AV-Compartives' test on a standard set of applications, 19 false positives were reported Avast! and 15 by AVG. All anti-malware programs produce false positives occasionally but the fewer, the better. They can prevent a necessary program from functioning properly. False positives are more than just alarming. AVG and Avira showed larger weaknesses in the malware/virus category, which scored the two at 80.7 and 87.7 percent, compared to Avast's score of 96.7 percent.įalse positives - legitimate programs that are erroneously tagged as malware - is a third important criterion for effectiveness. The difference held steady between subcategories, with Avast! and Avira outperforming AVG on backdoors/bots (98.5, 99.0, and 92.6 percent respectively), and Trojans (98.4, 97.7, 91.4 percent). Its February, 2011, report says that Avast! detected more than 98 percent of all sample malware thrown at it, Avira found 97.5 percent, while AVG detected only 91.4 percent. So let's compare all three, and see which program gives the better overall protection against various forms of malware.Ī is an independent antivirus testing service that answers exactly this type of question. Another very worthy contender that you didn't mention is Avira.
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Over a million copies of each are downloaded in a typical week. But which free anti-virus should you choose?Īvast! Free Antivirus and AVG Free are two of the most popular free antivirus programs of all time.
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I agree that for most users, one of the free anti-virus programs will perform just as well as Norton, McAfee or other commercial software.