FreeFileSync 10.9

FreeFileSync is a free and Open Source folder comparison and synchronization tool.

15.6 MB
4.5 24 votes

It is highly optimized for performance and usability without a needlessly complex user interface.


  • Detect moved and renamed files and folders
  • Copy locked files (Volume Shadow Copy Service)
  • Detect conflicts and propagate deletions
  • Binary comparison
  • Full support for Symbolic Links
  • Automate sync as a batch job
  • Multiple folder pairs
  • Copy NTFS extended attributes (compressed, encrypted, sparse)
  • Copy NTFS security permissions
  • Support long path names > 260 characters
  • Fail-safe file copy
  • Cross-platform: Windows/Linux
  • Expand environment variables like %USERPROFILE%
  • Access variable drive letters by volume name (USB sticks)
  • Native 32 and 64-bit builds
  • Keep versions of deleted/updated files
  • Optimal sync sequence prevents disc space bottlenecks
  • Full unicode support
  • Highly optimized performance
  • Include/exclude files via filter
  • Local and portable installation
  • Handle daylight saving time changes on FAT/FAT32
  • Use macros %time%, %date%, et al. for recurring backups
  • Case sensitive synchronization
  • Built-in locking serializes multiple jobs running against the same network share

What's New:

  • Support synchronization with Google Drive
  • Keep sync directions when changing versioning/deletion
  • Save last sync time before shutting down system
  • Avoid dependency on file id to detect duplicate folders
  • Check if path exists before creating duplicate MTP folder
  • Check for empty MTP item name during folder traversal
  • Check if MTP items are referenced by the same path
  • Support MTP devices requiring modTime for file creation
  • Fixed sync config GUI distortion when toggling auto retry
  • Fixed FreeFileSync sort order in Windows Uninstall
  • Fixed log override path being squashed on high DPI
  • Fixed volume serial not considered when file id is missing

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