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ClamAV vs VirusTotal: catalog facts
ClamAV	VirusTotal
Free Free and open source under the GPL 2.0, maintained by Cisco Talos.	Free Scanning URLs and files on the website is free.
Windows, macOS, Linux, Command line	Web
Signature format is open, so anyone can write detections Designed to be embedded in mail servers, file shares and upload pipelines	Aggregates verdicts from many scanning engines Handles both URLs and files
Detection rates trail the commercial engines in independent testing Not a real-time desktop protection suite on its own	Uploaded items are processed by a third-party service Verdicts can disagree and need interpreting
Downloadable app	Web application
Open source	Closed source
License: GPL-2.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 23, 2026

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