Get the world’s #1 antivirus for free.

Avast Free Antivirus protects your computer against viruses and malware, and it helps you protect your home network against intruders.

Free download
Get it for free! Free download

Intelligent antivirus & anti-malware

Detects threats no one has even heard of yet. Incredibly fast and reliable.

Wi-Fi Inspector

This unique-to-Avast feature scans your network for potential security issues to help prevent attacks on your routers and network.

Browser cleanup

Removes annoying browser addons and restores your clean search browser.