Open Source FreeFileSync AlternativesTop File Sync Tools and other similar apps like FreeFileSync

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

filter to find the best alternatives

FreeFileSync alternatives are mainly File Sync Tools, but if you're looking for Backup Clients or Online Backup Tools you can filter on that. Other popular filters include Windows + Open Source and Windows + Free. These are just examples - use the filter bar below to find more specific alternatives to FreeFileSync.
FreeFileSync iconFreeFileSync
  588
  • ...

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...

More about FreeFileSync
More about FreeFileSync
FreeFileSync alternatives page was last updated Apr 24, 2025
Copy a direct link to this comment to your clipboard
  1. Syncthing icon

    Syncthing

     809 likes
    Copy a direct link to this comment to your clipboard

    Open-source, peer-to-peer service offering encrypted file synchronization, ensuring data privacy and user-autonomy without relying on cloud storage or central servers, suitable for various uses.

    127 Syncthing alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • SE flagSweden
    • European Union flagEU

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Self-Hosted
    • Cloudron
    • Termux
    • Terminal
    Syncthing screenshot 1

    Properties

    1.  Lightweight
    2.  Privacy focused

    Features

    1.  Peer-To-Peer
    2.  Decentralized
    3.  Folder Sync
    4.  File Sync
    5.  Real-time sync
    6.  End-to-End Encryption
    7.  Synchronization
    8.  Ad-free
    9.  Large File Transfer
    10.  Dark Mode
    11.  No registration required
    12.  Portable

    Syncthing VS FreeFileSync

     
    Comments about Syncthing as an Alternative to FreeFileSync
    Top Negative Comment
    Randir
    Jun 21, 2023
    7

    FreeFileSync is used to sync files between directories/drives, while Syncthing is used to sync files between devices.

    Most Recent Comment
    drone621
    Negative Feb 15, 2025
    0

    FreeFileSync is intended for backing up some directories to a remote drive. Syncthing is intended for keeping two directories in sync in real time.

    Guest
    Negative Feb 13, 2024
    4

    It serves different purpose

    Show more comments
    3 of 5 comments
    FreeFileSync Icon
    Syncthing icon

    • Some users think Syncthing is a great FreeFileSync alternative, some don't.

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

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

    • Syncthing is Free and Open SourceFreeFileSync is Freemium and Open Source
    • Syncthing is Decentralized and LightweightFreeFileSync is not according to our users
  2. Rclone icon

    Rclone

     164 likes
    Copy a direct link to this comment to your clipboard

    Rclone ("rsync for cloud storage") is a command-line program to sync files and directories to and from different cloud storage providers.

    90 Rclone alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • GB flagUnited Kingdom

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Solaris
    • FreeBSD
    • NetBSD
    • OpenBSD
    Rclone screenshot 1

    Properties

    1.  Lightweight

    Features

    1.  Command line interface
    2.  File Sync
    3.  Cloud Sync
    4. MEGA icon  MEGA integration
    5. Google Drive icon  Google Drive integration
    6.  Backup to Cloud Storage
    7. Nextcloud icon  Nextcloud integration
    8.  Synchronization
    9. Microsoft OneDrive icon  Onedrive integration
    10.  End-to-End Encryption
    11.  Multiple Account support
    12.  Portable

    Rclone VS FreeFileSync

     
    Comments about Rclone as an Alternative to FreeFileSync
    Most Recent Comment
    ph soft
    Positive Mar 29, 2025
    0

    Can somewhat be used for similar purpose (synchronization, sftp, network share). Rclone has more protocols but not a real graphical interface.

    Guest
    Negative Dec 5, 2024
    -1

    totally different usecases

    Guest
    Negative Sep 4, 2024
    0

    Has no watcher/deamon options like freefilesync has with the FreeFileSync RealTimeSync agent.

    FreeFileSync Icon
    Rclone icon

    • Most users think Rclone is a great FreeFileSync alternative.

    • Rclone is Free and Open SourceFreeFileSync is Freemium and Open Source
    • Rclone is LightweightFreeFileSync is not according to our users
  4. rsync icon

    rsync

     267 likes
    Copy a direct link to this comment to your clipboard

    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...

    128 rsync alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Linux
    • BSD
    • Cygwin
    • Haiku
    First of 3127 lines of Manual pages

    rsync Features

    1.  File Sync
    2.  Command line interface
    3.  Schedule Backup
    4.  Folder Sync
    5.  Cloud Sync
    6.  Encrypted Backup
    7.  File by file encryption
    8.  Delta Backup

    rsync VS FreeFileSync

     
  5. Hoodik icon

    Hoodik

     18 likes
    Copy a direct link to this comment to your clipboard

    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.

    77 Hoodik alternatives

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • International

    Platforms

    • Self-Hosted
    • Docker
    Hoodik screenshot 1

    Properties

    1.  Lightweight

    Features

    1.  End-to-End Encryption
    2.  AES-256 Encryption

    Hoodik VS FreeFileSync

     
  6. Restic icon

    Restic

     63 likes
    Copy a direct link to this comment to your clipboard

    restic is a program that does backups right. The design goals are: Easy, Fast, Verifiable, Secure, Efficient, Free.

    55 Restic alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Arch Linux
    • FreeBSD
    • OpenBSD
    Restic screenshot 1

    Properties

    1.  Lightweight

    Features

    1.  Encrypted Backup
    2.  Data deduplication
    3.  Incremental Backup
    4.  Remote backup
    5.  Command line interface
    6.  Data Compression
    7.  Schedule Backup
    8.  Works Offline
    9.  Portable
    10.  File Versioning
    11.  Ad-free

    Restic VS FreeFileSync

     
  7. Unison File Synchronizer icon

    Unison File Synchronizer

     95 likes
    Copy a direct link to this comment to your clipboard

    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.

    52 Unison File Synchronizer alternatives

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    • Flatpak
    • Snapcraft
    Unison running in KDE terminal window

    Properties

    1.  Privacy focused
    2.  Lightweight

    Features

    1.  Bidirectional sync
    2.  Synchronization
    3.  File Sync
    4.  2 way sync
    5.  Command line interface
    6.  Folder Sync
    7.  Decentralized
    8.  Support for Rsync
    9.  No registration required
    10.  Works Offline
    11.  No Tracking
    12.  Gtk

    Unison File Synchronizer VS FreeFileSync

     
    Comments about Unison File Synchronizer as an Alternative to FreeFileSync
    ddnn
    Positive Feb 14, 2024
    0

    Easy to use and understand. Does the job with good file comparisons.

    Guest
    Positive Apr 12, 2018
    0

    It simply works, no hassle, no issues during many years of use and simple interface

    FreeFileSync Icon
    Unison File Synchronizer icon

    • Some users think Unison File Synchronizer is a great FreeFileSync alternative, some don't.

    • Unison File Synchronizer is Free and Open SourceFreeFileSync is Freemium and Open Source
    • Unison File Synchronizer is Decentralized, Privacy focused and LightweightFreeFileSync is not according to our users
  9. Kopia icon

    Kopia

     33 likes
    Copy a direct link to this comment to your clipboard

    Kopia is a fast and secure open-source backup/restore tool that manages filesystem snapshots in a remote storage. It features client-side encryption, compression, backup policies. command-line interface and more.

    16 Kopia alternatives

    License model

    • Free • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    Policies screen

    Properties

    1.  Privacy focused
    2.  Lightweight

    Features

    1.  Encrypted Backup
    2.  Ad-free
    3.  End-to-End Encryption
    4.  Command line interface
    5.  Schedule Backup
    6.  Automatic Backup
    7.  Incremental Backup
    8.  Remote backup
    9.  Selective Synchronization
    10.  No registration required
    11.  AES-256 Encryption
    12.  Data deduplication

    Kopia VS FreeFileSync

     
    Comments about Kopia as an Alternative to FreeFileSync
    Randir
    Negative Aug 5, 2023
    2

    FreeFileSync is used to sync files between directories/drives, while Kopia is a backup/restore tool that manages filesystem snapshots in a remote storage.

    FreeFileSync Icon
    Kopia icon
    • Kopia is Free and Open SourceFreeFileSync is Freemium and Open Source
    • Kopia is Privacy focused and LightweightFreeFileSync is not according to our users
  10. Syncthing-Fork icon

    Syncthing-Fork

     28 likes
    Copy a direct link to this comment to your clipboard

    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.

    License model

    • Free • Open Source

    Application type

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    Syncthing-Fork screenshot 1
    Syncthing-Fork screenshot 2
    Syncthing-Fork screenshot 3

    Top Syncthing-Fork Features

    1.  Decentralized
    2.  Real-time sync
    3.  No registration required
    4.  Works Offline
    5.  Dark Mode
    6.  File Versioning
    7.  Ad-free
    8.  End-to-End Encryption
    9.  No Tracking
    10.  Selective Synchronization
    11.  Cloud Sync
    12.  Direct P2P Sync

    Syncthing-Fork VS FreeFileSync

     
  11. EasySync icon

    EasySync

     8 likes
    Copy a direct link to this comment to your clipboard

    Synchronize your android phone/tablet with your DAV server, the easy way.

    License model

    • Free • Open Source

    Application type

    Platforms

    • Android
    • F-Droid
    EasySync screenshot 1
    EasySync screenshot 2
    EasySync screenshot 3

    Properties

    1.  Lightweight
    2.  Privacy focused

    Features

    1.  No Tracking
    2.  Ad-free
    3.  WebDAV Sync
    4.  WebDAV Support
    5.  Synchronization

    EasySync VS FreeFileSync

     
  12. Round Sync icon

    Round Sync

     7 likes
    Copy a direct link to this comment to your clipboard

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

    60 Round Sync alternatives

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Android
    • F-Droid
    Round Sync screenshot 1
    Round Sync screenshot 2
    Round Sync screenshot 3

    Round Sync Features

    1.  WebDAV Support
    2.  WebDAV Sync
    3.  Material design
    4.  Support for DLNA

    Round Sync VS FreeFileSync

     
10 of 37 FreeFileSync alternatives