9 of the 10 cloud storage providers we track offer zero-knowledge encryption on at least one plan: Filen, Icedrive, Internxt, MEGA, NordLocker, Proton Drive, Sync, Tresorit, pCloud. Providers where we have not verified zero-knowledge encryption: Wasabi. Zero-knowledge means the provider never holds your decryption keys and cannot read your files. Data verified .
| Provider | Plan | Price /mo | Storage | End-to-end encryption | Two-factor auth | Open source | Verified |
|---|---|---|---|---|---|---|---|
| Filen | Free | Free | 10 GB | Yes | — | Yes | |
| Filen | Pro I | $1.00 | 200 GiB | Yes | — | — | |
| Filen | Starter | $1.12 | 200 GiB | Yes | — | — | |
| Filen | Pro II | $3.99 | 500 GiB | Yes | — | Yes | |
| Filen | Pro III | $8.00 | 2 TiB | Yes | — | — | |
| Filen | Pro X | $39.99 | 10 TiB | Yes | — | — | |
| Icedrive | Pro | $3.00 | 2 TB | — | Yes | — | |
| Icedrive | Pro Max | $8.00 | 6 TB | — | Yes | — | |
| Icedrive | Pro Plus | $15.00 | 5 TB | Yes | Yes | — | |
| Internxt | Free | Free | 1 GB | Yes | Yes | Yes | |
| Internxt | Essential | $33.00 | 1TB encrypted storage | Yes | Yes | Yes | |
| Internxt | Premium | $50.00 | 3TB encrypted storage | Yes | Yes | Yes | |
| Internxt | Ultimate | $66.00 | 5TB encrypted storage | Yes | Yes | Yes | |
| MEGA | Free | Free | 20 GB | Yes | Yes | — | |
| MEGA | Pro I | $9.00 | 3 TB | Yes | Yes | — | |
| MEGA | Pro Flexi | $17.00 | 3 TB | Yes | Yes | — | |
| MEGA | Pro II | $19.00 | 10 TB | Yes | Yes | — | |
| MEGA | Pro III | $29.00 | 20 TB | Yes | Yes | — | |
| NordLocker | Free | Free | 3 GB | Yes | — | — | |
| NordLocker | Personal Plus | $6.00 | 2 TB | Yes | Yes | — | |
| NordLocker | Custom | $29.99 | n/a | Yes | Yes | — | |
| NordLocker | Business Plus | $29.99 | — | Yes | Yes | — | |
| NordLocker | Personal | — | 500 GB | Yes | — | — | |
| pCloud | Premium | $4.17 | 500 GB | Yes | Yes | — | |
| Proton Drive | Free | Free | 5 GB | Yes | Yes | Yes | |
| Proton Drive | Drive Plus | $3.99 | 200 GB | Yes | Yes | Yes | |
| Proton Drive | Drive Professional | $7.99 | 1 TB per user | Yes | Yes | — | |
| Proton Drive | Proton Unlimited | $9.99 | 500 GB | Yes | — | Yes | |
| Proton Drive | Proton Duo | $14.99 | 2 TB | Yes | Yes | — | |
| Proton Drive | Proton Family | $23.99 | 3 TB | Yes | Yes | — | |
| Sync | Teams Standard | $3.00 | 1 TB | Yes | Yes | — | |
| Sync | Solo Basic | $8.00 | 2 TB | Yes | Yes | — | |
| Sync | Solo Pro | $14.00 | 5 TB | — | — | — | |
| Tresorit | Basic | Free | 3 GB encrypted storage | Yes | — | — | |
| Tresorit | Personal Lite | $4.75 | 50 GB | Yes | Yes | — | |
| Tresorit | Personal Essential | $11.99 | 1 TB encrypted storage | Yes | Yes | — | |
| Tresorit | Business Standard | $15.20 | From 6 TB encrypted sto… | Yes | Yes | — | |
| Tresorit | Personal Pro | $27.49 | 4 TB | Yes | Yes | — | |
| Tresorit | Enterprise | — | n/a (customizable) | Yes | Yes | — | |
| Tresorit | Business Plus | — | — | Yes | Yes | — |
Facts on this page come from our provider database: 52 plans across 10 providers, collected from providers' own pages with a source URL recorded per field and re-verified on a rolling schedule (every plan within ~30 days). Per-field sources are disclosed on each provider page and in the compare tool. A dash means "not yet verified", never "no".
Cite as: Secure Cloud Storage, "Zero-knowledge cloud storage", securecloudstorage.com,
data verified Sep 30, 2026.
AI agents can query this database directly over MCP at
https://securecloudstorage.com/mcp — tools and details in llms.txt.