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Syncthing

お任せ Omakase

Syncthing continuously synchronizes folders between your own devices over the local network or the internet. Files are stored only on your devices; public discovery servers help devices find each other, and relay servers can forward encrypted traffic when no direct connection is possible. Data is transferred encrypted, and devices are paired by exchanging device IDs. It runs on Windows, macOS, Linux and other systems and is managed through a local web interface.

Code Fireworks render of the Syncthing repository, as of Nov 2026
As of Nov 2026Code Fireworks ↗

Why it fits

It is licensed under Mozilla Public License 2.0. Binaries and source are free to install for private use on your own machines.

Getting started

4 steps · clarity 3/5

Prerequisites (from the official docs):

  • At least two devices you want to keep in sync
  • Network access between them (Syncthing can relay if direct connections are blocked)

Steps:

  1. Install Syncthing on each device from the official downloads or your package manager.
  2. Open the local web interface (by default http://127.0.0.1:8384).
  3. Add the other device by its device ID on both sides.
  4. Share a folder and accept it on the other device.

Official getting started guide: https://docs.syncthing.net/intro/getting-started.html

Notes

Typed as App (P2P clients on your devices). There is no separate mandatory hosted service.

Sources

  1. syncthing.net
  2. github.com/syncthing/syncthing/blob/main/LICENSE
  3. docs.syncthing.net/intro/getting-started.html

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