Avast. The world's #1 antivirus.

With more than 230 million users, Avast is the most trusted security & antivirus in the world. You are now just a few clicks away from protecting your PC for free.

For the first time ever, you can protect your home network devices, such as routers and wireless devices, from hacker attacks.

Remove annoying browser toolbars or extensions, and restore your hijacked search browser.

Easily update your important software to increase the overall security and condition of your PC.

Remote Assistance lets you help or be helped over the Internet.