Free and open-source differential file synchronization software for Windows, macOS, and Linux. ByteSync securely compares and transfers only file differences — no VPN, no setup, just fast, encrypted, cross-platform sync and backup.
Syncthing AlternativesOnly apps categorised as Duplicate File Finders
The best Duplicate File Finder alternative to Syncthing is ByteSync, which is both free and Open Source. If that doesn't work for you, our users have ranked more than 100 alternatives to Syncthing, but unfortunately only one of them is a Duplicate File Finder.
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Syncthing alternatives are mainly Backup Clients, but if you're looking for Duplicate File Finders or File Sync Tools you can filter on that. Other popular filters include Open Source, iPhone, Android + Open Source and Android. These are just examples - use the filter bar below to find more specific alternatives to Syncthing.