ozSync is an utility that enables you to synchronize files and folders. Synchronize operations can be started manually, time scheduled or made in Real-Time.

Backup of replaced files can be enabled and old files will be store in the standard $ozSyncBackup[date_time] directory. Backups of old files can
be zipped at main root backup dir or relative to changed file/s location.

http://www.softpedia.com/get/System/Back-Up-and-Recovery/ozSync.shtml
This is portable program.
Download the ZIP file and extract to a folder of your choice