Filen is an end-to-end encrypted cloud storage service for individuals, with web, desktop and mobile apps and a command-line client. It offers a network drive with Smart Sync, several sync modes, encrypted notes and end-to-end encrypted chats. For developers there are SDKs, and WebDAV and S3 access through a self-hosted CLI server. According to Filen, files are encrypted on the client with AES-256 and neither Filen nor any other party has access to them.
Filen is operated by Filen Cloud Dienste UG (haftungsbeschränkt) in Recklinghausen, Germany. According to its privacy policy, data is stored on servers hosted in Germany, and its analytics and feedback tools are self-hosted there too. Some payment and error-reporting processors, such as PayPal, Stripe, Sentry and Cloudflare Turnstile, process data in the United States or other third countries. The source code of its apps, such as the desktop client and the web app, is public on GitHub under the AGPL-3.0 licence.