Wikipedia
ChronoSync
ChronoSync is a Mac OS X application for periodic backups, bootable drive clones and folder synchronizations. It offers the ability to target any device or folder visible in Finder such as a Volume, Thumb Drive, NAS, Disk Image, Server, or another Mac.
In 2014, ChronoSync received top software pick on About.com and received a 10 out of 10 rating on the Apple Daily Report.