FreeFileSync is a folder comparison and synchronization software that creates and manages backup copies of all your important files. Instead of copying every file every time, FreeFileSync determines the differences between a source and a target folder and transfers only the minimum amount of data needed. FreeFileSync is Open Source software, available for Windows, macOS, and Linux.

Features

  • Features such as an auto-updater, parallel sync, portable version, and silent installation
  • FreeFileSync is available free of charge for personal use
  • FreeFileSync works by comparing one or multiple folders on their content, date or file size and subsequently synchronizing the content according to user-defined settings
  • In addition to supporting local file systems and network shares, FreeFileSync is able to sync to Google Drive, FTP, FTPS, SFTP and MTP devices.
  • Logs, conflict resolution, and error reporting in UI

Project Samples

Project Activity

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Categories

File Sync

License

GNU Free Documentation License

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FreeFileSync Web Site

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User Reviews

  • I use FreeFileSync for small office clients who need a reliable local backup to an external drive or NAS without a subscription. The two-way comparison view matters most in practice: seeing exactly which files will be copied, updated, or deleted before anything runs prevents the usual sync surprises. Setting up a saved configuration for Documents and Pictures and running it on a schedule takes minutes, and the versioning option for deleted files has saved us more than once when a client removed the wrong folder. The interface is plain, but for a set-and-check backup routine it is dependable and clear about what it is doing.
  • GREAT piece of software. Fast and reliable! I use it many years with no issues.
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Additional Project Details

Operating Systems

Linux, Mac, Windows

Programming Language

C++

Related Categories

C++ File Sync Software

Registered

2025-08-04