FreeFileSync Reviews in 2026

Audience

Any user looking for a folder comparison and synchronization software that creates and manages backup copies of all important files

About FreeFileSync

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. The FreeFileSync project is 100% dependent on ad revenue and donations to stay alive. Instead of the ads, and after FreeFileSync has proven useful to you, please think about supporting with a donation. FreeFileSync strives to provide high-quality software with zero open bugs. This is achieved by fast release cycles and free 24/7 support for everyone. If you find FreeFileSync useful, please consider supporting the project by donating. Your donation will fund the development of new features and help to keep up continuous program maintenance.

Other Popular Alternatives & Related Software

MultCloud

(1 Rating)

With MultCloud, you can easily sync two cloud services or two folders on different cloud accounts. You can also set up scheduled sync to sync your data between clouds at a certain interval automatically. Connect all your clouds to MultCloud and you'll find it so easy to access and manage all your online files with a single login. Upload, download, copy/cut, paste, preview and rename your online files just like in Windows Explorer. And as multiple free cloud drives are integrated, you actually have the way to "expand" your free cloud storage. The process of transfer runs on the server of MultCloud, so the data is still transferring even when your device is power off. As it is offline cloud sync or transfer, once you launch data transmission, you can simply shut down your browser or computer and leave the rest to MultCloud.

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SureSync

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SureSync Pro is a file replication and synchronization application that provides one-way and multi-way processing in both scheduled and real-time modes. The Communications Agent provides real-time monitors, delta copies via Remote Differential Compression, TCP communications, compression, and encryption. SureSync Managed File Transfer (MFT) adds file locking, archiving, enhanced logging/status, blob storage support in Azure and Amazon clouds, and a next-generation intelligent transfer engine. File locking enables real-time multi-way collaborative environments with protection against users changing the same file in multiple offices at the same time. SQL Protection simplifies backups of critical SQL databases. SureSync comprehensive enterprise-grade feature set can help solve any file synchronization, replication, and archiving challenge.

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SquirrelBak

SquirrelBak is a simple, secure, and silent one-way backup tool for Windows environments. It enables real-time folder synchronization from a source machine ("Sender") to an idle PC in another location ("Receiver")—with no cloud, no login, and no restore complexity. Ideal for backing up continuously growing folders like logs, documents, and OA data. ✨ Features - One-way sync (Sender → Receiver) - Real-time folder monitoring with low CPU/disk usage - One-click sync between PCs - Auto-reconnect and resume transfers after network recovery or restart - No cloud, no account, no subscription required - Silent background operation with system tray control - Backup history logs - Check and Complete

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Syncthing

(1 Rating)

Syncthing is a continuous file synchronization program. It synchronizes files between two or more computers in real time, safely protected from prying eyes. Your data is your data alone and you deserve to choose where it is stored, whether it is shared with some third party, and how it's transmitted over the internet. None of your data is ever stored anywhere else other than on your computers. There is no central server that might be compromised, legally or illegally. All communication is secured using TLS. The encryption used includes perfect forward secrecy to prevent any eavesdropper from ever gaining access to your data. Every device is identified by a strong cryptographic certificate. Only devices you have explicitly allowed can connect to your other devices. The protocol is a documented specification — no hidden magic. Any bugs found are immediately visible for anyone to browse — no hidden flaws.

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Integrations

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Ratings/Reviews

Overall 0.0 / 5

ease 0.0 / 5

features 0.0 / 5

design 0.0 / 5

support 0.0 / 5

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Product Details

Platforms Supported

Cloud

Windows

Mac

Linux

iPhone

iPad

Android

Training

Documentation

Support

Online

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