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

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