Restic!

Déjà Dup is a simple backup tool. It hides the complexity of doing backups the 'right way' (encrypted, off-site, and regularly) and uses Duplicity as the backend. It features support for local or remote backup locations, including Amazon S3.

Back In Time is a simple backup tool for Linux inspired from FlyBack and "TimeVault". The backup is done by taking snapshots of a specified set of directories.

BorgBackup (short: Borg) is a deduplicating backup program. Optionally, it supports compression and authenticated encryption.

rdiff-backup backs up one directory to another, possibly over a network. The target directory ends up a copy of the source directory, but extra reverse diffs are stored in a special subdirectory of that target directory, so you can still recover files lost some time ago. The idea is to combine the best features of a mirror and an incremental backup. rdiff-backup also preserves subdirectories, hard links, dev files, permissions, uid/gid ownership, modification times, extended attributes, acls, and resource forks. Also, rdiff-backup can operate in a bandwidth efficient manner over a pipe, like rsync. Thus you can use rdiff-backup and ssh to securely back a hard drive up to a remote location, and only the differences will be transmitted. Finally, rdiff-backup is easy to use and settings have sensical defaults. »

LuckyBackup is an application that backs-up and/or synchronizes any directories with the power of rsync. Its main features are: backup, safety, synchronization, exclude/only include options, allows custom rsync options, remote connections, restore and dry-run operations, scheduling, profiles and command line mode.