Syncthing AlternativesOnly Open Source apps categorised as File Sync Tools

Alternatives list

1. 

   

   FreeFileSync

    627 likes

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

   114 FreeFileSync alternatives

   Cost / License

   • Freemium
   • Open Source

   Application types

   • File Sync
   • Backup Client

   Origin

   • Germany
   • EU

   Platforms

   • Mac
   • Windows
   • Linux
   • Flathub
   • PortableApps.com
   • Chocolatey

   

   

   

   +7

   

   More about FreeFileSync  

   

   Is FreeFileSync a good alternative to Syncthing?

    

   |

   2comments

   Expand

   FreeFileSync vs Syncthing Comments

    

   Sam Lander

   Positive comment•Jun 18, 2023

   2

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

   Guest

   Negative comment•Sep 26, 2021

   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.

   

   

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

   

   Spacedrive

    167 likes

   Open-source file explorer integrates cloud, local, and offline storage across devices using a secure virtual distributed filesystem in Rust, enabling unified management, file syncing, privacy control, intuitive interface, and ownership without centralized servers.

   84 Spacedrive alternatives

   Cost / License

   • Free
   • Open Source

   Application types

   • File Manager
   • File Sync

   Origin

   • United States

   Platforms

   • Mac
   • Windows
   • Linux

   

   

   

   +3

   

   More about Spacedrive  

   

   Is Spacedrive a good alternative to Syncthing?

    
4. 

   

   rsync

    276 likes

   Utility for Unix file and directory synchronization using delta encoding for efficient transfer, supports compression, incremental backup, remote operation via SSH, customizable filters, permission and timestamp preservation, and daemon mode on TCP 873.

   137 rsync alternatives

   Cost / License

   • Free
   • Open Source (GPL-2.0)

   Application type

   • File Sync

   Origin

   • United States

   Platforms

   • Linux
   • BSD
   • Cygwin
   • Haiku

   

   

   

   More about rsync  

   

   Is rsync a good alternative to Syncthing?

    

   |

   3comments

   Expand

   rsync vs Syncthing Comments

    

   Guest

   Negative comment•Jan 31, 2016

   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 comment•Jun 8, 2025

   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 comment•Sep 29, 2021

   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.

   

   

   • rsync is Free and Open SourceSyncthing is also Free and Open Source
5. Ad

   

   

   Internxt Drive

   Open-source, privacy-focused cloud storage using zero-knowledge encryption and blockchain technology, provides secure file transfer, end-to-end encryption, free 10 GB plan, desktop and mobile support, full user control, and no da...

   https://internxt.com

   Learn More
6. 

   

   Koofr

    150 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.

   202 Koofr alternatives

   Cost / License

   • Freemium
   • Open Source (MIT)

   Application types

   • Cloud Storage
   • File Sync

   Origin

   • Slovenia
   • EU

   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

   

   

   

   +3

   

   More about Koofr  

   

   Is Koofr a good alternative to Syncthing?

    
7. 

   

   Syncthing-Fork

    49 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

   • Free
   • Open Source (MPL-2.0)

   Application type

   • File Sync

   Platforms

   • Android
   • Android Tablet
   • F-Droid

   

   

   

   +8

   

   More about Syncthing-Fork  

   

   Is Syncthing-Fork a good alternative to Syncthing?

    

   |

   2comments

   Expand

   Syncthing-Fork vs Syncthing Comments

    

   Aleksandr Dikov

   Positive comment•Feb 26, 2019

   1

   Syncthing-Fork is enhancement version of original Android app.

   Guest

   Positive comment•Jun 2, 2021

   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-Fork is Free and Open SourceSyncthing is also Free and Open Source
8. 

   

   Unison File Synchronizer

    97 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

   • Free
   • Open Source (GPL-3.0)

   Application type

   • File Sync

   Origin

   • United States

   Platforms

   • Mac
   • Windows
   • Linux
   • Flathub
   • Flatpak
   • Snapcraft

   

   

   More about Unison File Synchronizer  

   

   Is this a good alternative to Syncthing?

    
10. 

    

    Filestash

     39 likes

    A Dropbox-like file manager that let you manage your data anywhere it is located: FTP, SFTP, WebDAV, Git, S3, Minio, Dropbox, Google Drive.

    243 Filestash alternatives

    Cost / License

    • Freemium
    • Open Source (AGPL-3.0)

    Application types

    • Cloud Storage
    • File Sync

    Origin

    • France
    • EU

    Platforms

    • Online
    • Self-Hosted
    • Software as a Service (SaaS)

    

    

    

    +2

    

    More about Filestash  

    

    Is Filestash a good alternative to Syncthing?

     
11. 

    

    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.

    83 SparkleShare alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    • File Sync

    Origin

    • United States

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • Self-Hosted

    

    

    More about SparkleShare  

    

    Is SparkleShare a good alternative to Syncthing?

     
12. 

    

    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.

    Cost / License

    • Free
    • Open Source (GPL-3.0)

    Application type

    • Large File Transfer

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    • FreeBSD

    

    

    

    More about Rymdport  

    

    Is Rymdport a good alternative to Syncthing?

     
13. 

    

    Round Sync

     10 likes

    Round Sync helps you to manage your files, everywhere you go, on your local device or on most cloud providers.

    Cost / License

    • Free
    • Open Source (GPL-3.0)

    Application type

    • File Sync

    Origin

    • Germany
    • EU

    Alerts

    • Discontinued

    Platforms

    • Android
    • F-Droid

    

    

    

    +1

    

    More about Round Sync  

    

    Is Round Sync a good alternative to Syncthing?

     
14. 

    

    Librevault

     40 likes

    Librevault is an open-source peer-to-peer file synchronization program, designed with convenience and privacy in mind. Our goal is to make a better alternative to BitTorrent Sync and Syncthing.

    Cost / License

    • Free
    • Open Source (GPL-3.0)

    Application types

    • Cloud Storage
    • File Sync

    Origin

    • Ukraine

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux

    

    More about Librevault  

    

    Is Librevault a good alternative to Syncthing?

     
15. 

    

    Syncany

     73 likes

    Syncany is an open-source cloud storage and filesharing application. It allows users to backup and share certain folders of their workstations using any kind of storage, e.g. FTP, Amazon S3 or Google Storage.

    Cost / License

    • Free
    • Open Source

    Application types

    • Cloud Storage
    • File Sync

    Origin

    • Germany
    • EU

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux

    

    

    

    +2

    

    More about Syncany  

    

    Is Syncany a good alternative to Syncthing?