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ClamXAV vs Avast Free Antivirus: catalog facts
ClamXAV	Avast Free Antivirus
Paid Paid license with a 30-day free trial and volume discounts.	Freemium The antivirus is free; Avast sells a VPN and other paid products.
macOS	Windows, macOS, Android
Real-time scanning with automatic updates Light on system resources	Free antivirus from a large vendor Available for Windows, macOS and Android
macOS only Paid after the 30-day trial	Closed source Promotes paid products from within the free offer
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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