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Koofr vs Filen: catalog facts
Koofr	Filen
Freemium The first 10 GB are free; larger storage plans are paid.	Freemium A free tier is available. More storage requires a paid plan or a lifetime purchase.
Windows, macOS, Linux, Android, iOS, Web, Browser extension	Windows, macOS, Linux, Android, iOS, Web
EU-based storage with a no-tracking policy Connects other cloud accounts in one view	Client applications are open source and the encryption is zero-knowledge Data stored in Germany under EU data protection rules
Free tier limited to 10 GB Requires an account on a hosted service	Smaller and newer than the established providers Some clients still carry rough edges
Downloadable app, Web application, Hosted service, Browser extension	Downloadable app, Hosted service
Closed source	Open source
License not stated	License not stated
Account needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

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