Borg Backup - Deduplicating backup program with compression and authenticated encryption
Duplicati - Free backup software to store backups online with strong encryption. Works with FTP, SSH, WebDAV, OneDrive, Amazon S3, Google Drive and many others.
bup - Very efficient backup system based on the git packfile format, providing fast incremental saves and...
Restic - Easy: Doing backups should be a frictionless process, otherwise you are tempted to skip it.
rsync - rsync is a file transfer program for Unix systems. rsync uses the "rsync algorithm" which provides a very fast method for bringing remote files into sync.
UrBackup - UrBackup is a open source client/server backup system, that through a combination of image and file...