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Back In Time vs Déjà Dup: catalog facts
Back In Time	Déjà Dup
Free The software is free under its open-source licence. Hosting, hardware and external…	Free Free and open source under the GPL, part of the GNOME project's apps.
Linux	Linux
Unchanged files are hard-linked rather than copied, so each snapshot looks complete while using very little extra disk…	Encrypts, compresses and schedules backups with almost no configuration Incremental, so you can restore from any particular past backup
It is Linux-only and inherits rsync's weaknesses, including no built-in encryption and slow handling of very large file…	Personal files only; the project says it does not support complete system recovery Linux and GNOME only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: GPL-3.0
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 22, 2026	Official website Full listing and sources Checked September 21, 2026

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