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Duplicati vs Backblaze Computer Backup: catalog facts
Duplicati	Backblaze Computer Backup
Free The backup client is free and open source. The vendor sells a separate commercial…	Paid $9 per month per computer after a free trial with no credit card required.
Windows, macOS, Linux	Windows, macOS
A very long list of supported destinations, including most mainstream cloud storage AES-256 or GnuPG encryption applied before anything is uploaded	Unlimited storage for one computer Minimal setup, runs automatically
The stable and canary channels move at very different speeds, and the project spent years in beta Restores of very large backup sets can be slow, because the format is built around remote storage rather…	One subscription per computer No Linux client
Downloadable app	Downloadable app, Hosted service
Open source	Closed source
License: MIT	License not stated
No account needed	Account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked September 23, 2026

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