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, Linux and macOS.
 
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FreeFileSync 10.4
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Latest News

Sep 9, 2018
FreeFileSync 10.4 has been released!
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

Hi there. I just have finally migrated away from Windows permanently and this program has been my life-saving replacement for TreeComp. It is actually better and quicker, and an absolute gem to use. You are a genius, thank you so much.
Tim Clayton
This is best file transfer software ever. I have three backups and one button helps me keep them all synced.
Khan Shahzada Haleem
Very good app. Helps me sync between PCs and portable hard drives. The best backup app I've used. Best of all, it's free!
Gary
Works great and it's free. I have mine set to automatically run every day at 4:00 PM on my Mac OS X.
chrispublic123