Avast Free Antivirus is happy to provide its users the tools and features they need to keep their PC from getting sick with malware. With Smart Scan, you can check your PC for every vulnerability, from infection to out-of-date software. You can identify unknown threats with CyberCapture, and SafeZone Browser lets you explore the Internet without worrying about spies or ads.
Best of all, thanks to cloud computing and a slick design, we can offer those features and more without slowing or interrupting you while you work. So scan, clean, and protect without worry -- we'll stay out of your way.