BorgBackup is described as '(short: Borg) is a deduplicating backup program. Optionally, it supports compression and authenticated encryption' and is a popular Backup Client in the backup & sync category. There are more than 25 alternatives to BorgBackup for a variety of platforms, including Linux, Mac, Windows, BSD and FreeBSD apps. The best BorgBackup alternative is Duplicati, which is both free and Open Source. Other great apps like BorgBackup are Restic, TimeShift, Acronis True Image and Kopia.
ZBackup is a globally-deduplicating backup tool, based on the ideas found in rsync. Feed a large .tar into it, and it will store duplicate regions of it only once, then compress and optionally encrypt the result.
Kup is created for helping people to keep up-to-date backups of their personal files. Connecting a USB hard drive is the primary supported way to store files, but saving files to a server over a network connection is also possible for advanced users.
BmuS is a powerful free backup program for the automated backup of files, directories, and MySQL databases from a Linux / Raspberry Pi system to a NAS or network drive. It features a dashboard, encryption, deduplication, and much more.
dar is a shell command that backs up directory trees and files, taking care of hard links, Extended Attributes, sparse files, MacOS's file forks, any inode type (including Solaris Door inodes), etc.
Emborg is a simple command line utility to orchestrate backups. It is built as a front-end to Borg, a powerful and fast deduplicating backup program. With Emborg, you specify all the details about your backups once in advance, and then use a very simple command line interface...
rsnapshot is a rsync based backup utillity, providing filesystem snapshot functionality. It can take incremental snapshots of local and remote filesystems for any number of machines.
Very efficient backup system based on the git packfile format, providing fast incremental saves and global deduplication (among and within files, including virtual machine images).
Snebu -- Simple Network Backup Utility An easy to set up and use snapshot-style backup system for Linux. Each backup is a full snapshot of your system, classified with a retention schedule (such as daily, weekly, monthly, etc). Individual backups can be manually expired, or exp.
Backer is a visual front end to the rsync command. It allows the user to select multiple folders and back them up to multiple locations. It stores your backup settings for you so that all your backups can be run easily using a single button click.
ElkarBackup will help you securing your company data. Manage all your backups from a single place, with an easy-to-use web interface!
Rebel Backup lets you make encrypted backups of your important files offsite to Dropbox or Google Drive. You control what and how often is backed up, and the encryption happens locally on your computer.
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In addition to compression, de-duplication across all clients, and now optional encryption, it supports public-key encryption, with possibility of multiple key files, and multiple clients writing to the same repository concurrently. The back end storage format seems to be a bit more standard (SQLite DB, lzop compressed files, etc).