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FreeFileSync

Open-source file comparison and synchronisation program for backing up folders on Windows, macOS and Linux

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About FreeFileSync

FreeFileSync is an open-source tool for comparing folders and keeping backup copies of files up to date. On each run it works out which files differ between a source and a target folder and copies only what has changed, rather than moving everything again.

What FreeFileSync offers

  • Folder comparison — detects differences between two locations before any data is moved.
  • Incremental synchronisation — transfers only the minimum data needed to bring the target in line.
  • Backup management — creates and maintains copies of important files.
  • Business Edition — a licensed version for commercial use, with device licences that can be extended or changed in number.
  • Reseller licensing — resellers can buy Business Edition licences on behalf of a separate end customer.

Who it works with

The standard version is aimed at private individuals using it at home, while the Business Edition covers companies.

Key facts

  • Licence: open source
  • Platforms: Windows, macOS and Linux
  • Latest release: version 14.12

Profile written by TrustList from the business's own published information, Sep 2026.

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