FreeFileSync 10.3

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

13.9 MB
4.4 23 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:

  • Limit number of file versions by age and count
  • Report not yet existing folders as warning instead of error
  • Improved comparison speed for high-latency traversals
  • Set up parallel file operations for versioning folder
  • Early clean up to avoid hitting (S)FTP connection limits
  • Support FTP servers with ANSI encoding
  • Fixed folder drag and drop for modal dialogs
  • Fixed progress graph glitch due to unsteady system clock
  • Unbuffered folder lock file existence checking
  • Fixed macOS Donation Ed. not recognized after rename
  • Updated translation files

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