What is Syncthing?
Syncthing is a continuous file synchronization program that syncs files between two or more computers in real time, safely protected from prying eyes. Your data is your data alone – none of it is ever stored anywhere else other than on your computers. There is no central server that might be compromised, legally or illegally. All communication is secured using TLS with perfect forward secrecy to prevent any eavesdropper from ever gaining access to your data. Every device is identified by a strong cryptographic certificate, and only devices you've explicitly allowed can connect. Syncthing just works, over LAN and over the Internet.
Key Features
- ✓Peer-to-peer synchronization
- ✓No central server
- ✓TLS encryption with PFS
- ✓Cryptographic device authentication
- ✓Cross-platform (Windows, macOS, Linux, BSD)
- ✓Web-based interface
- ✓UPnP automatic setup
- ✓Folder sharing with anyone
- ✓Open protocol (documented spec)
- ✓Conflict handling
- ✓Ignore patterns
- ✓Versioning support
🔒 Privacy & Data Protection
Syncthing is designed with privacy as the core principle. No central server means no single point of compromise. All data stays on your devices – nothing goes through third-party servers. TLS encryption with perfect forward secrecy ensures even past communications cannot be decrypted. The open protocol and open-source code mean complete transparency. For users wanting Dropbox-like sync without cloud storage, Syncthing provides privacy cloud services cannot match.
Best For
💰 Pricing
Syncthing is completely free and open-source under MPL 2.0. There are no paid tiers. Commercial support is available from Kastelo for enterprise needs.
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