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Seafile vs Möbius Sync: catalog facts
Seafile	Möbius Sync
Freemium The community edition is free and open source. The Professional edition is paid.	Freemium Distributed through the App Store; check the store listing for current pricing.
Windows, macOS, Linux, Android, iOS, Self-hosted	iOS
Block-level sync and deduplication make it fast with large libraries Per-library client-side encryption, and a drive client that streams on demand	Brings Syncthing sync to iPhone and iPad Works with Syncthing on Windows, macOS, Linux and Android
Some features are reserved for the paid Professional edition Self-hosting requires a database and careful upgrade handling	iOS only Third-party app, not part of the official Syncthing project
Self-hosted, Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 23, 2026

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