Grsync

Grsync is a graphical user interface for rsync. rsync is a differential backup and file synchronization tool widely used in Unix-like operating systems.
Grsync is developed with the GTK widget toolkit. Like rsync, Grsync is free and open-source software licensed under the GNU General Public License.
About.
Rsync is a well-known tool for backups in Linux system, which supplies needs to copy a group of files and folders. It can backup every local folder, support SSH tunneling, delta-only synchronization and so on.
But Grsync adds ability for such purposes in graphical user interfaces. rsync's needs learning a pretty complex set of arguments. It is much easier to backup files rather than using rsync in command-line. Since Ver 1.3.0 Grsync has GTK-3 compatibility.