filen.io

What It Is

Filen is an encrypted cloud storage service from Germany, aimed primarily at individual users. Its core selling points are zero-knowledge security and client-side end-to-end encryption. The company emphasizes that neither the service provider nor other organizations can access users’ files, and that all apps are open source. Filen covers Web, desktop, mobile, and CLI, making it usable both as an everyday cloud drive and for more technical scripting or headless-environment workflows.

Core Features and Security

In terms of features, Filen offers file management, folder organization, automatic sync, file sharing, network drive, Smart Sync, encrypted camera uploads on mobile, encrypted notes, encrypted chat, and collaboration. The desktop app supports Windows, macOS, and Linux; mobile apps are available via the App Store and Google Play; and the CLI can be used via npm, a curl script, or Docker. On security, the documentation explicitly mentions AES-GCM 256-bit, client-side encryption, and a zero-knowledge architecture. It also states that both the company headquarters and servers are in Germany and are subject to European and German data protection laws.

Pricing

Pricing is straightforward: Pro I with 200 GiB costs €1.99/month, Pro II with 500 GiB costs €3.99/month, Pro III with 2 TiB costs €8.99/month, and Pro X with 10 TiB costs €39.99/month. The page also notes that plans can be stacked on the same account—for example, two Pro X plans can make up 20 TiB—with no stated upper limit. The official site says users can start for free without a credit card, but it does not specify the free storage quota or limitations.

Pros and Cons

The strengths are its solid privacy-oriented design, open-source apps, complete cross-platform coverage, and practical capabilities such as network drive and CLI support. Pricing is also relatively transparent, making it suitable for long-term storage and sync. The downside is that the captured information includes very little about common enterprise SaaS capabilities, such as SSO, team permissions, audit logs, an admin console, compliance certifications, third-party integrations, or an open API. As a result, there is not enough information for a full enterprise software evaluation.

Who It’s For and Access from China

Filen is best suited to privacy-conscious individual users, freelancers, technical users, and system administrators, for use cases such as private file sync, backups, encrypted sharing, mobile photo backups, and scripted file management. The text does not mention access conditions from mainland China, nor does it state whether payments support RMB, Alipay, or WeChat Pay. Before purchasing, users should test network connectivity and payment availability. If localized speed and payment options are more important, it may be worth comparing with 坚果云, 阿里云盘, and 百度网盘; for international encrypted cloud storage, alternatives include MEGA, Tresorit, and pCloud.