
Syncthing
rsync
GoodSync
Duplicati
Rclone
SyncBack
DirSync Pro
FreeFileSync is a free open source data backup software that helps you synchronize files and folders on Windows, Linux and macOS.

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Which is more popular?
Based on our record, FreeFileSync seems to be more popular. It has been mentioned 205 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | freefilesync.org | opalstack.com |
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| Company | Startup from Germany | — |
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What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
FreeFileSync is recommended for users who need a reliable and efficient way to sync files across devices or create consistent backups. It is ideal for both casual users who need a straightforward backup solution and more technical users who require advanced features and customization.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using FreeFileSync and Opalstack. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


As a result, FreeFileSync helps speed up backup procedures by comparing source and target folders and just copying what is needed rather than copying everything. Additional synchronization options are available via...
FreeFileSync is useful for individuals and businesses for comparing multiple folders and synchronizing folders. It provides a robust backup solution. Choose to sync folders in real time, sync on a schedule, or run the...
FreeFileSync is a folder comparison and synchronization software, which can create and manage backup copies of all important files. FreeFileSync does not need to copy every file every time but determines the...
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Recommendations tracked on public social media and blogs since March 2021.


JetBrains IDEs: https://www.jetbrains.com/ (free alternative: Visual Studio Code plus DB tools like DBeaver, or even their community versions) MobaXTerm: https://mobaxterm.mobatek.net/ (free alternative: mRemoteNG, PuTTY) GitKraken:... - Source: Hacker News / about 1 year ago
Not regularly, but I have donated to: FreeFileSync, an excellent file sync utility within a network. https://freefilesync.org/ StemRoller, separate stems (e.g., voice) from songs. https://www.stemroller.com/ John's Background Switcher,... - Source: Hacker News / over 1 year ago
FreeFileSync https://freefilesync.org/ I have been a happy user for years and have made a donation too. - Source: Hacker News / over 2 years ago
Tracking Opalstack since Sep 2023.
When comparing FreeFileSync and Opalstack, you can also consider the following products.

Syncthing replaces proprietary sync and cloud services with something open, trustworthy and...
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rsync is a file transfer program for Unix systems. rsync uses the "rsync algorithm" which provides a very fast method for bringing remote files into sync.
Compare rsync to FreeFileSync or Opalstack:

GoodSync provides highly reliable file backup and synchronization for both individuals and businesses.
Compare GoodSync to FreeFileSync or Opalstack:

Free backup software to store backups online with strong encryption. Works with FTP, SSH, WebDAV, OneDrive, Amazon S3, Google Drive and many others.
Compare Duplicati to FreeFileSync or Opalstack:


Backup software for the PC: powerful, easy to use solution for backing up and synchronising files on a local/network drive, the cloud, FTP server and more.
Compare SyncBack to FreeFileSync or Opalstack: