One-Way Directory or File Synchronization Tool. Free software written in Java.
Sync is a simple command-line utility for performing one-way directory or file synchronization. It synchronizes the specified target to match the specified source. Only the target is modified. Runs on any OS with the Java Runtime Environment (JRE 6+).
Sync is free software written in Java and released under the GNU GPL license (version 3).
Download: Sync 2.1