Compare software

Avast Free AntivirusClamAV
Freemium

The antivirus is free; Avast sells a VPN and other paid products.

 Free

Free and open source under the GPL 2.0, maintained by Cisco Talos.

Windows, macOS, Android Windows, macOS, Linux, Command line
  • Free antivirus from a large vendor
  • Available for Windows, macOS and Android
  • Signature format is open, so anyone can write detections
  • Designed to be embedded in mail servers, file shares and upload pipelines
  • Closed source
  • Promotes paid products from within the free offer
  • Detection rates trail the commercial engines in independent testing
  • Not a real-time desktop protection suite on its own
Downloadable app Downloadable app
Closed source Open source
License not stated License: GPL-2.0
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 23, 2026

Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.