FreeFileSync - Open Source File Synchronization

Open Source File Synchronization
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Synchronize Files and Folders

Key features
Press release
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, Linux and macOS.


FreeFileSync 9.8

Latest News

Feb 6, 2018: FreeFileSync 9.8 has been released!
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User Reviews

kissaki reviewed FreeFileSync:

Great application for all your file/folder comparison and synchronisation needs. Allows you to add multiple, specific source and target folders and use filters to exclude and include specific files and/or sub-paths.

The generation of a batch script allows you to automate the synchronisation, which you set up in the GUI. It can then run regularly and in the background.

The synchronisation dialogue is beautiful, showing you the speed at which it happens. Display filters allow you to grasp the changes, and preview stats allow you to see the quantity of changes before-hand (so you don't make a mistake, moving the wrong way around for example).

oid-2864505 reviewed FreeFileSync:

Flexible. Does what it's supposed to do well. I switched from SyncBack (free version) to FreeFileSync because it handles a few important things better, e.g. copying locked files, more powerful filters.

Edo Hulsebos reviewed FreeFileSync:

Exactly what I was looking for! Nice program, easy to use interface, works like a breeze!

Patrick B reviewed FreeFileSync:

A good sync tool needs reliability, batch capability, a compare-only mode, and configurable rules for dealing with different out-of-sync cases. FreeFileSync has all of those and a straightforward user interface as well. I really can't think what I would add. Congratulations to the development team!
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