Compare software

Avast Free Antivirus vs Kaspersky Premium: catalog facts
Avast Free Antivirus	Kaspersky Premium
Freemium The antivirus is free; Avast sells a VPN and other paid products.	Paid Paid subscription licence, with trial versions available.
Windows, macOS, Android	Windows, macOS, Browser extension
Free antivirus from a large vendor Available for Windows, macOS and Android	Top tier of an established consumer security range Trial available before purchase
Closed source Promotes paid products from within the free offer	Paid subscription that must be renewed Closed source
Downloadable app	Downloadable app, Browser extension
Closed source	Closed source
License not stated	License: Proprietary
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 September 23, 2026	Official website Full listing and sources Checked September 24, 2026

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