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Duplicity vs Disk ARchive (dar): catalog facts
Duplicity	Disk ARchive (dar)
Free Free and open source under the GPL.	Free Free; source code and static binaries are published.
macOS, Linux, Command line	Linux, Command line
Encrypts and signs everything before it leaves the machine Supports a very wide range of remote storage back ends	Differential and incremental backups alongside full archives Built-in compression and encryption
Long incremental chains make restores slow and fragile Periodic full backups are needed to keep chains manageable	Command line only Several parallel branches can make choosing a version confusing
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License not stated
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 22, 2026	Official website Full listing and sources Checked September 24, 2026

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