Backup apps
- npbackup
- based on Restic
GUI apps
- List of backup GUIs
- restic list of similar apps
- Kopia
- Timeshift System restore tool for Linux. Creates filesystem snapshots using rsync+hardlinks, or BTRFS snapshots
Pika backup
- https://flathub.org/apps/details/org.gnome.World.PikaBackup
- https://gitlab.gnome.org/World/pika-backup
- Based on Borg backup
- No S3 backend support, since Borg doesn't support any S3 backends neither
Deja Dup
- https://wiki.gnome.org/Apps/DejaDup
- https://gitlab.gnome.org/World/deja-dup
- https://wiki.ubiuntuusers.de/D%C3%A9j%C3%A0_Dup/
- Traditionally based on duplicity, but from v4.3 on, it supports restic as backend
- Still, no S3 restic support
Debug deja-dup:
DEJA_DUP_DEBUG=1 deja-dup
Duplicacy
- UI is a paid product:/