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SyncThing

syncthing.net File Utilities Website

Syncthing continuously synchronizes files between devices, according to the project page.

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syncthing.net
SyncThing homepage screenshot

About SyncThing

Syncthing is a continuous file synchronization program that synchronizes files between two or more computers in real time over LAN and the Internet. Folders are shared by exchanging device IDs without requiring IP addresses or manual port forwarding, and multiple folders can be synced with different people or between own devices. It is configured and monitored through a browser interface and runs on macOS, Windows, Linux, FreeBSD, Solaris, OpenBSD and others. The project states that data is stored only on user computers with no central server, and that connections use TLS with device certificates.

Key features

  • Synchronizes files between two or more computers in real time
  • Syncs multiple folders with different people or own devices
  • Connects over LAN and Internet using device IDs and UPnP without manual port forwarding
  • Secures communication with TLS, forward secrecy, and device certificates
  • Configures and monitors via browser-based interface
  • Runs on macOS, Windows, Linux, FreeBSD, Solaris, OpenBSD
Best for: People who want to sync folders directly between their own computers or with selected others without a central server.
Good for
  • Project states no central server and data stays on user computers
  • Documented protocol with source code available on GitHub
  • Works over LAN and Internet without IP addresses or advanced configuration

SyncThing at a glance

Type
Website
Pricing
Not confirmed. Check the site
Platforms
Web
Open source
Not stated
Language
English
Last checked
Oct 5, 2026 · Online when checked
Listed
Oct 5, 2026
downloads

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SyncThing FAQ

How do I share a folder with another computer?
Each machine has a device ID. Give your ID to the other person, share the folder, and connect over LAN or the Internet. UPnP handles the connection without manual port forwarding.
Where is my data stored?
According to the project, data is stored only on your computers, with no central server.
Which operating systems does it run on?
macOS, Windows, Linux, FreeBSD, Solaris, OpenBSD, and many others.
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Listing maintained by Chris McClure and the WebIndexly editors · Updated Oct 10, 2026 · How we rank