The world’s most popular antivirus software:
152,296,889 registrations and growing

Avast! Free Antivirus often outperforms our competitors´ paid-for products and is the minimum protection anyone should have against viruses and spyware.

avast! Free Antivirus often outperforms our competitors´ paid-for products in independent tests, leading in both security features and scanning speed. In fact, AV-Comparatives.org rated avast! 5.0 the fastest out of 20 antivirus programs!
Having antivirus protection is critical and, fortunately, easier than ever. Download now and in just a few minutes you’ll be enjoying the peace of mind that comes from having the best and fastest online protection available.
The AVAST business model is unique: rather than allocate resources for advertising, they focus instead on R&D, online distribution, maintaining a highly professional staff, and offering a high-quality free product. Consequently, two thirds of our users were referred by someone already using avast! Every month, with help from their users via the avast! Community, thry detect between 1.1 to 1.4 billion pieces of malware, of which a billion or more are from infected websites.
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