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Duplicati vs Backup4all: catalog facts
Duplicati	Backup4all
Free The backup client is free and open source. The vendor sells a separate commercial…	Paid Licences start at US$29.99, with a 30-day free trial.
Windows, macOS, Linux	Windows
A very long list of supported destinations, including most mainstream cloud storage AES-256 or GnuPG encryption applied before anything is uploaded	Full, incremental, differential and mirror backup types Backs up to cloud storage and local destinations
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…	Windows only Paid after the 30-day trial
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License not stated
No account needed	Not stated if an account is needed
Works offline	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.