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SeafileSyncthing
Freemium

The community edition is free and open source. The Professional edition is paid.

 Free

Free software; the Syncthing Foundation is funded by donations. There is no storage cost…

Windows, macOS, Linux, Android, iOS, Self-hosted Windows, macOS, Linux, Command line, Self-hosted
  • Block-level sync and deduplication make it fast with large libraries
  • Per-library client-side encryption, and a drive client that streams on demand
  • No central server: none of your data is stored anywhere except on your own computers
  • All traffic is TLS encrypted with perfect forward secrecy, and every device is authenticated by certificate
  • Some features are reserved for the paid Professional edition
  • Self-hosting requires a database and careful upgrade handling
  • The official Android app was archived in December 2024; Android users rely on a community fork
  • Both devices must be online at the same time for changes to move
Self-hosted, Downloadable app Downloadable app, Self-hosted
Open source Open source
License not stated License: MPL-2.0
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 22, 2026

Checked September 20, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.