Restic – backup program that is fast, efficient and secure
https://github.com/restic/restic
Duplicity – Encrypted bandwidth-efficient backup using the rsync algorithm
https://www.nongnu.org/duplicity/
Duplicity – Debian Wiki
https://wiki.debian.org/Duplicity
Duplicity – Arch Wiki
https://wiki.archlinux.org/index.php/duplicity
Déjà Dup – Simple backup tool for GNOME
https://wiki.gnome.org/Apps/DejaDup
Duplicity and Restic – Backing Up Linux to Backblaze B2 with Duplicity and Restic
https://www.backblaze.com/blog/backing-linux-backblaze-b2-duplicity-restic/