Syncthing 2.1.3
Syncthing is an open-source, peer-to-peer file synchronization tool that syncs folders directly between your own devices over an encrypted connection, without routing data through a third-party cloud service.
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Syncthing replaces cloud sync services like Dropbox or Google Drive’s file-sync feature with a direct, encrypted device-to-device model: files move straight between your own machines (or self-hosted always-on nodes) rather than sitting on a third party’s servers. Each synced folder is identified by a shared ID, and devices must explicitly trust each other before any data moves.
How It Works
Syncthing runs as a background service with a local web-based configuration UI (by default at localhost:8384). Devices discover each other on the local network automatically, or over the internet via Syncthing’s relay/discovery infrastructure when they’re not on the same LAN, with all transferred data encrypted end-to-end using TLS.
Installing on Linux
tar xzf syncthing-linux-amd64-v2.1.3.tar.gz
cd syncthing-linux-amd64-v2.1.3
./syncthingMost distributions also carry a native package (sudo apt install syncthing on Debian/Ubuntu), which is generally preferable since it registers a proper systemd user service for automatic startup.
What’s New in the 2.1.x Series
The 2.1 branch modernized Syncthing’s internal database and sync protocol implementation, improving performance on large folder sets and many-device setups compared to the long-running 1.x series.
Verify Your Download
SHA256 checksums are published alongside each release on GitHub.