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100 million users and growing

Over 100 million people have avast! protecting their computers, making avast! one of the world's leading - and most trusted - antivirus programs. This is much more than just the total number of downloads. Our users also like us, regularly placing avast! at the top of user ranking charts over other antivirus products.

 avast! Pro Antivirus avast! Internet Security
avast! Free Antivirus avast! Internet Security
Continuous protection against viruses and spyware Yes Yes
Ensures all mails sent and received are clean Yes Yes
Keeps you protected from "chat" infections Yes Yes
Stops attacks from hijacked websites Yes Yes
Lets you safely browse suspicious websites or applications Yes Yes
Blocks hacker attacks to protect your identity Yes Yes
Keeps your mailbox free from spam Yes Yes
Allows safe and uninterrupted gaming Yes Yes
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You can try avast! 5.0 programs for 30 days, free of charge. During this trial period, you have full access to all product functions and to technical support as well. The decision to buy a fully licensed product or uninstall the trial program is up to you.

For home and home office

If you didn't find the product you were looking for, please check the downloads for version 4.8.

You can try most avast! 4.8 programs for 60 days, free of charge. During this trial period, you have full access to all product functions and to technical support as well. The decision to buy a fully licensed product or uninstall the trial program is up to you.

For home and home office

For businesses

Other products and solutions

Utilities

Converting your trial download into a licensed product

You can convert your trial download to a fully licensed product at any time during the trial period. Once the application is running, just click on the "Buy" button in the avast! user interface or follow the instructions on the reminder screen.

More downloads

Products

New award!

avast! topped AV-comparatives test in August 2009

avast! topped AV- comparatives test in August 2009.

  • Top speed among anti-virus programs
  • Top performer in detecting viruses

What people say

"I am more than satisfied with avast! as the total protector for my systems. It has saved me from many many potential infections and I would be lost without it. It is an excellent product backed by excellent support and an excellent crew of people."
M.K., Australia