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FreeFileSync is a free and open source folder comparison and synchronization application for Windows. The application also works on Mac OS X and Linux. FreeFileSync provides you with a clean, easy to use and intuitive interface that offers many features for sync purposes.

Key features include:

• Detection of moved and renamed files and folders.

• Automate synchronization as a batch job.

• Detect conflicts and propagate deletes.

• Use macros for recurring backups.

• An optimal synchronization sequence prevents disk bottlenecks.

• Access variable drive letters by volume name (USB drives).

• Copy NTFS extended attributes (compressed, encrypted, sparse).

FreeFileSync also supports portable installation on USB memory sticks or external hard drives.