FreeFileSync is a free, open source folder comparison and synchronization application for Windows. The application also runs on Mac OS X and Linux. FreeFileSync provides you with a clean, easy to use and intuitive interface, which offers numerous features for synchronization purposes.
Key Features Include:
Detect moved and renamed files and folders.
Automate sync as a batch job.
Detect conflicts and propagate deletions.
Use macros for recurring backups.
Optimal sync sequence prevents disc space bottlenecks.
Access variable drive letters by volume name (USB sticks).