Proton Drive
Encrypted Cloud StorageUpdated: 2026-10-18•SecureTools Research Desk
Proton Drive alternative to Tresorit: Swiss-based, open-source end-to-end encrypted cloud storage.
Proton Drive brings end-to-end encryption to cloud storage, file sync, and document editing. Every file, folder name, file size, and upload timestamp is cryptographically secured with user-derived keys before leaving the client application. Operating under Swiss jurisdiction outside of US and EU surveillance treaties, Proton Drive guarantees that even Proton engineers cannot view stored documents or decrypt file metadata.
Key Features & Capabilities
5 Verified FeaturesFull metadata encryption (file names, sizes, extensions, and directory paths encrypted)
Password-protected and expiring download links for non-Proton recipients
End-to-end encrypted collaborative document editor (Proton Docs)
Open-source clients with publicly released independent security audits
Selective desktop file synchronization with smart on-demand local caching
Top Alternatives
4 listedSupported Integrations
3 platformsPricing Plans & Tier Comparison
Verified monthly & annual subscription plans, quotas, and feature allowances.
| Plan Tier | Monthly | Annual Billing | Included Features & Quotas |
|---|---|---|---|
Free Plan | $4.99/mo | - | 5GB storage | Drive Plus: $4.99/mo 200GB | Proton Unlimited: $9.99/mo 500GB + VPN/Mail. |
Technical Architecture & Security Specifications
| Supported Platforms | Web, Windows, macOS, iOS, Android |
| Deployment Model | Cloud SaaS |
| Encryption at Rest | AES-256-GCM / OpenPGP |
| Encryption in Transit | TLS 1.3 / End-to-End Encrypted |
| Zero-Knowledge Architecture | Yes (Client-side keys) |
| Certifications & Compliance | ISO 27001GDPR CompliantSwiss Federal Act on Data Protection (FADP) |
Pros & Cons Analysis
Key Strengths
- •Comprehensive metadata encryption protects file names and directory trees from discovery
- •Transparent open-source cryptographic codebase subjected to public audits
- •Generous 5 GB permanently free starter plan with no advertising
- •Native collaborative encrypted document editor built directly into the web interface
Considerations
- •No native Linux desktop sync GUI client currently available
- •Lacks advanced enterprise features such as SIEM logging, SAML SSO, or custom domain branding
- •Sharing large folders with non-Proton users requires link recipients to download ZIP packages
Frequently Asked Questions
Does Proton Drive encrypt file names?
Yes. Unlike many standard cloud providers, Proton Drive encrypts all file metadata, including file names, file sizes, creation dates, and folder hierarchies.
Is the Proton Drive client code open source?
Yes, Proton maintains open-source repositories for web, desktop, and mobile applications with audited cryptographic protocols.
Verified User Reviews & Ratings
Authentic community ratings calculated dynamically across security, workflow, and pricing.
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