Download Syncthing – Free Private Peer-to-Peer File Synchronization

Syncthing is a free, open-source continuous file synchronization program that syncs files between two or more devices directly, without any central cloud server. Your data stays on your own devices — it is never uploaded to a third-party service — and all transfers are encrypted end-to-end using TLS, ensuring complete privacy and security.

Syncthing works on Windows, macOS, Linux, Android, and other platforms. It uses a web-based interface for configuration and monitoring, making it accessible from any browser. You simply share folders between your trusted devices using Device IDs, and Syncthing handles the rest — detecting changes, syncing files, and resolving conflicts automatically.

Syncthing is the ideal replacement for cloud sync services like Dropbox or Google Drive for users who want full control over their data and infrastructure. It is decentralized, requires no accounts or subscriptions, and scales from two devices to dozens without any central server.

Key Features

• Direct peer-to-peer file sync with no cloud server — your files never leave your devices
• End-to-end TLS encryption for all transfers between trusted devices
• Cross-platform — Windows, macOS, Linux, Android, and more
• Web-based management UI accessible from any browser on the local network
• Versioning support to keep previous file versions for conflict recovery
• Selective sync — choose which folders to share with which devices
• No accounts, subscriptions, or registration required — completely free and open-source

How to Install

1. Click the download button below to get Syncthing for your operating system.
2. Extract the archive and run the syncthing executable — the web UI opens in your browser automatically.
3. On Windows, consider using SyncTrayzor for a more convenient system tray experience.
4. Add a remote device by exchanging Device IDs and sharing a folder between your machines.
5. Accept the share request on the other device and syncing begins immediately.