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Dropbox vs Seafile: catalog facts
Dropbox	Seafile
Freemium A small free tier is available. More storage and features require a paid plan.	Freemium The community edition is free and open source. The Professional edition is paid.
Windows, macOS, Linux, Android, iOS, Web	Windows, macOS, Linux, Android, iOS, Self-hosted
The most mature and reliable sync engine, with clients everywhere Smart sync keeps large libraries usable on small disks	Block-level sync and deduplication make it fast with large libraries Per-library client-side encryption, and a drive client that streams on demand
The free tier is only a few gigabytes and caps linked devices Files are stored unencrypted from the provider's point of view	Some features are reserved for the paid Professional edition Self-hosting requires a database and careful upgrade handling
Downloadable app, Hosted service	Self-hosted, Downloadable app
Closed source	Open source
License not stated	License not stated
Account 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 22, 2026

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