Protect your devices with the best free antivirus on the market. Download Avast antivirus and anti-spyware protection for your PC, Mac and Android. PC Mag Editor's Choice. 5 Advanced+ awards and the lowest impact on PC Performance. Virus Bulletin 100 Certified. Certified for 100% protection against. Best free antivirus for Windows 7 from market leaders - protecting 400 million people. 100% protection against viruses, spyware, ransomware and all malware.
Try Our Best-Selling Software Free for 30 Days. Avast Internet Security. Independent testing firm Virus Bulletin has awarded Avast its VB100 Award on numerous.