Open source peer-to-peer file sync between your own devices
Syncthing continuously synchronizes folders directly between your computers and servers, without storing anything on a third-party cloud. Connections are encrypted and authenticated, devices find each other on the local network or through relays, and per-folder versioning keeps old copies of changed files. It is free, open source and configured through a local web interface.
- features
- 3
- alternatives
- 8
- platforms
- 4
- Updated
- Oct 12, 2026
Features
Our take
Pros
- Syncs directly between your devices with no third-party cloud
- Free and open source, with encrypted connections
- Per-folder versioning keeps copies of changed files
Cons
- Configuration through a web interface is less approachable for non-technical users
- Devices must be online at the same time to sync
- No official mobile apps
Editorial assessment by the Alternatives.tools team, based on what the product is known for. Not a user review.
Best Syncthing alternatives
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OneDriveFreemiumMicrosoft's cloud storage, built into Windows and Microsoft 365
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KoofrFreemiumEuropean cloud storage that also connects your other clouds
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