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Acronis True Image vs ClamAV: catalog facts
Acronis True Image	ClamAV
Paid Paid software sold by Acronis; cloud storage is an optional part of the offer.	Free Free and open source under the GPL 2.0, maintained by Cisco Talos.
Windows, macOS	Windows, macOS, Linux, Command line
Image-based backup of a whole system Backup and anti-malware in one product	Signature format is open, so anyone can write detections Designed to be embedded in mail servers, file shares and upload pipelines
Paid, closed-source software Renamed several times, which can make older guides confusing	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
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 21, 2026

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