slackbuilds_ponce/system/FreeFileSync

FreeFileSync is a folder comparison and synchronization software that
creates and manages backup copies of all your important files.
Instead of copying every file every time, FreeFileSync determines the
differences between a source and a target folder and transfers only
the minimum amount of data needed. FreeFileSync is Open Source
software,available for Windows, Linux and macOS.

This package installs to /opt/FreeFileSync