Restic - Easy: Doing backups should be a frictionless process, otherwise you are tempted to skip it.

Duplicati - Free backup software to store backups online with strong encryption. Works with FTP, SSH, WebDAV, OneDrive, Amazon S3, Google Drive and many others.

snaprd - Snaprd is a program that helps you to make snapshot backups using rsync.

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...

Time Machine - Time Machine is the breakthrough automatic backup that’s built right into Mac OS X.