Open-source software for syncing and backing up files across Windows, macOS, and Linux by transferring only essential data.
Cost / License
- Freemium
- Open Source
Application types
Germany
EUPlatforms
- Mac
- Windows
- Linux
- Flathub
- PortableApps.com
- Chocolatey
+7
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 Spacedrive, rsync, Koofr and Syncthing-Fork.
filter to find the best alternatives
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.
Alternatives list
113 FreeFileSync alternatives
84 Spacedrive alternativesOpen-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.
+3
136 rsync alternativesrsync 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...
200 Koofr alternativesKoofr 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.
Cost / License
- Freemium
- 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
+3
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.
+8
Lightweight, self-hosted encrypted cloud storage enabling fast uploads and downloads, easy Docker install, secure public link sharing, browser-side cryptography, searchable metadata, and low RAM footprint. Designed for privacy, performance, and file management.
Cost / License
- Free
- Open Source
Application types
Platforms
- Android
- Self-Hosted
- Docker
+7
54 Unison File Synchronizer alternativesUnison 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.
128 Fileverse alternativesTrustless collaboration platform with decentralized file-sharing, collaborative editing, cheap storage, privacy controls, onchain team and community access, website and blog publishing, open workflows, customizable spaces, and alternatives to traditional online suites.
+4
Facilitates encrypted peer-to-peer file sharing across major platforms using unique code phrases for authentication, ensuring end-to-end security, resumable transfers, direct device pairing without accounts, no external data storage, and simple installation.
243 Filestash alternativesA Dropbox-like file manager that let you manage your data anywhere it is located: FTP, SFTP, WebDAV, Git, S3, Minio, Dropbox, Google Drive.
Cost / License
- Freemium
- Open Source (AGPL-3.0)
Application types
Platforms
- Online
- Self-Hosted
- Software as a Service (SaaS)
+2
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
Secure data transfer software that allows users to transfer files between computers. It uses a Password Authenticated Key Exchange (PAKE) for end-to-end encryption and generates single-use codes for the transfer. The 'wormhole' command-line tool facilitates transfers with tab-completion for ease of use.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Mac
- Windows
- Linux
- Python
United States
Slovenia
Croatia
Singapore
France
FreeFileSync is less prone to errors. I trust it more than Syncthing.