About Syncthing
Syncthing is a continuous file synchronization program. It keeps files in real time across multiple computers, designed for individuals and teams who want private, direct control over where their data lives and how it’s transmitted.
Key Features
When you’re syncing sensitive data without a central host, these capabilities matter because you get direct device-to-device control, strong security, and transparent development:
Private Data on Devices
Your data never leaves your machines; there’s no central server, and all traffic is protected with TLS plus perfect forward secrecy; devices authenticate with cryptographic certificates.
Open Protocol & Open Source
The protocol (BEP-v1) is documented, and the full source is on GitHub; you can review specs and track issues in public.
No Central Server, Peer-to-Peer Sync
Files move directly between devices over LAN or the Internet; no cloud is involved, and you connect using device IDs with optional UPnP to avoid port forwarding.
Cross-Platform Web UI
Manage syncing via a browser-based interface that works on macOS, Windows, Linux, FreeBSD, OpenBSD, Solaris, and more.
Summary
Best for small teams, developers, and IT ops teams who need private, device-to-device file sync across laptops, desktops, and servers without a cloud dependency.
