FreeFileSync Open Source File Synchronization

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Synchronize Files and Folders

Key features
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.
 
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FreeFileSync 10.14
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Latest News

Jul 14, 2019
FreeFileSync 10.14 has been released!
Jan 26, 2019
Synchronize files with Google Drive
Jul 16, 2018
Parallel file copy and ad-free installer
Jun 11, 2017
FreeFileSync Video Tutorials available
May 24, 2017
FreeFileSync adds Support for FTP and FTPS
 
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User Reviews

I have used a bunch of backup software, some paid and some free. But, Free File Sync is the simplest most straightforward way to back up files. All I did was copy the pertinent directories to a 1.5 TB USB connected drive, then set up a batch file in FFS to run every day at noon and sync the two directories. Like magic it works flawlessly. And, rather than go through some clunky interface to restore something it is a simple as going to the external drive and copying the files back.
Bob in New Hampshire
The file filter specification (inclusion and exclusion) brings incredible power to this free software. Thanks for showing us that free can be (much) better than paid software.
gaetan
I've been using FreeFileSync for years and I have to say thanks again for the great software, frequent updates and excellent support you give to us. Keep doing that!
Tarcisio Alves de Menezes
For the longest time I was looking for a simple straightforward synchronization program to make weekly backups. Finally I found it. Thank you guys for making this sublime program available for free.
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