The Best Open Source Syncthing AlternativesTop File Sync Tools and other similar apps like Syncthing

The best open source alternative to Syncthing is FreeFileSync. If that doesn't suit you, our users have ranked more than 100 alternatives to Syncthing and loads of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Syncthing are rsync, Syncthing-Fork, Koofr and Hoodik.

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Syncthing alternatives are mainly File Sync Tools, but if you're looking for Cloud Storage Services or Large File Transfer Services you can filter on that. Other popular filters include Open Source, iPhone, Android + Open Source and Android. These are just examples - use the filter bar below to find more specific alternatives to Syncthing.
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Alternatives list

  1. FreeFileSync icon

    FreeFileSync

     609 likes

    Open-source software for syncing and backing up files across Windows, macOS, and Linux by transferring only essential data.

    106 FreeFileSync alternatives

    Cost / License

    • Freemium (Subscription)
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    • PortableApps.com
    • Chocolatey
    Windows
     
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    10
    Comments about FreeFileSync as an Alternative to Syncthing
    Sam Lander
    Positive
    2

    FreeFileSync is less prone to errors. I trust it more than Syncthing.

    Guest
    Negative
    3

    UI is not as nice; some features seem to be available only after donating (so “Freemium”, not free)

    Review by a new / low-activity user.
    Syncthing Icon
    FreeFileSync icon

    • Almost everyone thinks FreeFileSync is a great Syncthing alternative.

    • FreeFileSync is the most popular Windows, Mac & Linux alternative to Syncthing.

    • FreeFileSync is the most popular Open Source & free alternative to Syncthing.

    • FreeFileSync is Freemium and Open SourceSyncthing is Free and Open Source
  2. rsync icon

    rsync

     270 likes

    rsync is a software application for Unix which synchronizes files and directories from one location to another while minimizing data transfer using delta encoding when appropriate. An important feature of rsync not found in most similar programs/protocols is that the mirroring...

    130 rsync alternatives

    Cost / License

    Application type

    Platforms

    • Linux
    • BSD
    • Cygwin
    • Haiku
    First of 3127 lines of Manual pages
     
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    3
    25
    Comments about rsync as an Alternative to Syncthing
    Guest
    Negative
    18

    rsync is a pure command line client, requiring explicitly the command to be typed, with accurate data on the destination whereas Syncthing seems to run in background. This would require to use rsync plus something else (e.g. a scheduler, cron, acron, pick one)

    Review by a new / low-activity user.
    Samenaga
    Positive
    0

    I like rsync as an alternative to synthing because it can do pretty much the same. I like to use rsync for one off transfers or backups and syncthing for mirror syncronization.

    Spout
    Negative
    1

    they have some overlapping features but are pretty different tools. rsync is much more powerful in the diversity of things it can do and is purely command line. syncthing has a web interface (in addition to cli for those who are so inclined) and device apps and is simpler to set up. rsync will easily let you hose your files if you use it wrong whereas syncthing is more set up to avoid that.

    Syncthing Icon
    rsync icon

    • Most users think rsync is a great Syncthing alternative.

    • rsync is Free and Open SourceSyncthing is also Free and Open Source
  4. Syncthing-Fork icon

    Syncthing-Fork

     46 likes

    Comprehensive file sync solution featuring individual sync settings per device and folder, Android-optimized interface, efficient battery-saving options, two-way SD card sync on Android 11+, and robust encrypted folder support for security.

    Cost / License

    Application type

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    Syncthing-Fork screenshot 1
    Syncthing-Fork screenshot 2
    Syncthing-Fork screenshot 3
     
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    10
    Comments about Syncthing-Fork as an Alternative to Syncthing
    Aleksandr Dikov
    Positive
    1

    Syncthing-Fork is enhancement version of original Android app.

    Guest
    Positive
    1

    Syncthing alone was not working for me to transfer files from work profile to personal profile so installed each syncthing and its fork and it worked.

    Review by a new / low-activity user.
    Syncthing Icon
    Syncthing-Fork icon

    • Almost everyone thinks Syncthing-Fork is a great Syncthing alternative.

    • Syncthing-Fork is Free and Open SourceSyncthing is also Free and Open Source
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  6. Koofr icon

    Koofr

     138 likes

    Koofr is a safe, secure and simple way to store, backup and share your documents, photos, videos and more. It offers up to 10 GB of free safe storage for your files with affordable upgrades and options to connect multiple cloud accounts.

    192 Koofr alternatives

    Cost / License

    • Freemium (Subscription)
    • Open Source (MIT)

    Application types

    Platforms

    • Mac
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • Windows Phone
    • iPad
    • Linux Mobile
    • Google Chrome
    • Rust
    • F-Droid
    • Software as a Service (SaaS)
    • Docker
    • Chromium
    • Mozilla Firefox
    Koofr web app
     

    • Koofr is the most popular Web-based & SaaS alternative to Syncthing.

    • Koofr is Freemium and Open SourceSyncthing is Free and Open Source
  7. Hoodik icon

    Hoodik

     24 likes

    Hoodik is a lightweight, secure, and self-hosted cloud storage solution. It's designed and built with Rust and Vue, focusing on end-to-end encryption that shields your data from prying eyes and hackers.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Self-Hosted
    • Docker
    Hoodik screenshot 1
     
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    1
    Comments about Hoodik as an Alternative to Syncthing
    Guest
    Negative
    1

    Not the same functionality, Syncthing is primarily file syncing

    Review by a new / low-activity user.
    Syncthing Icon
    Hoodik icon

    • Hoodik is the most popular Self-Hosted alternative to Syncthing.

    • Hoodik is Free and Open SourceSyncthing is also Free and Open Source
  8. Unison File Synchronizer icon

    Unison File Synchronizer

     96 likes

    Unison is a file-synchronization tool for POSIX-compliant systems (e.g. *BSD and GNU/Linux), macOS and Windows, with the caveat that the platform must be supported by OCaml. It allows two replicas of a collection of files and directories to be stored on different hosts (or diffe.

    54 Unison File Synchronizer alternatives

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    • Flatpak
    • Snapcraft
    Unison running in KDE terminal window
     
  10. Croc icon

    Croc

     25 likes

    croc is a tool I built to easily and securely transfer stuff from one computer to another.

    The only tool that is easily installed and used on any platform, and has secure peer-to-peer transferring, and has the capability to resume broken transfers.

    111 Croc alternatives

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Termux
    Croc screenshot 1
     
  12. Magic Wormhole icon

    Magic Wormhole

     26 likes

    This package provides a library and a command-line tool named wormhole, which makes it possible to get arbitrary-sized files and directories (or short pieces of text) from one computer to another.

    84 Magic Wormhole alternatives

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • Mac
    • Windows
    • Linux
    • Python
     
  13. SparkleShare icon

    SparkleShare

     110 likes

    SparkleShare is a Free Open Source syncing tool. Its light, secure and easy to use. SparkleShare allows you to setup your own servers so you always keep control on your data.

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • Self-Hosted
    SparkleShare screenshot 1
     
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  14. Rymdport icon

    Rymdport

     11 likes

    Rymdport (formerly wormhole-gui) is a cross-platform application that lets you easily and safely share files, folders, and text between devices. The data is sent securely with end-to-end encryption using the same protocol as Magic Wormhole.

    14 Rymdport alternatives

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    • FreeBSD
    Send
     
  15. Warpinator icon

    Warpinator

     19 likes

    Warpinator is a free, open-source tool for sending and receiving files between computers that are on the same network. All you need do is install Warpinator on the computers, choose a group code, edit your firewalls if necessary, and that’s all.

    89 Warpinator alternatives

    Cost / License

    Application type

    Platforms

    • Windows
    • Linux
    • Android
    • Flathub
    • Flatpak
    • Android Tablet
    • iPhone
    • iPad
    Warpinator screenshot 1
     
12 of 64 Syncthing alternatives