backdup
BackDup is a Duplicity front-end for MacOS and Linux
BackDup is a Duplicity (http://duplicity.nongnu.org/) front-end for MacOS and Linux written in Java.
Duplicity creates bandwidth-efficient backup using the rsync algorithm.
Mac OS users: please install Duplicity via macports (https://www.macports.org/)
Linux users: install Duplicity via your package manager as usual.