Duplicacy - A new generation cross-platform cloud backup tool
Truck - A faster alternative to FTP
Time Machine - Time Machine is the breakthrough automatic backup that’s built right into Mac OS X.
csync - csync is a lightweight utility to synchronize files between two directories on a system or between...
Duplicati - Free backup software to store backups online with strong encryption. Works with FTP, SSH, WebDAV, OneDrive, Amazon S3, Google Drive and many others.
Synchromat - Synchromat is file and folder synchronization software for Windows.