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 | — | Yes | — | Yes | |
| Filen | Pro I | $1.99 | 200 GiB | Yes | — | — | |
| Filen | Starter | $1.99 | 200 GiB | Yes | — | — | |
| Filen | Pro II | $3.99 | 500 GiB | Yes | — | — | |
| Filen | Pro III | $8.99 | 2 TiB | Yes | — | — | |
| Filen | Pro X | $39.99 | 10 TiB | Yes | — | — | |
| Icedrive | Pro Plus | $7.00 | 5 TB | Yes | Yes | — | |
| Icedrive | Pro | $59.00 | 2 TB | Yes | Yes | — | |
| Icedrive | Pro Max | $149.00 | 6 TB | Yes | Yes | — | |
| Internxt | Free | Free | 1 GB | Yes | Yes | Yes | |
| Internxt | Essential | $24.92 | 1TB encrypted storage | Yes | Yes | Yes | |
| Internxt | Premium | $49.92 | 2TB encrypted storage | Yes | Yes | Yes | |
| Internxt | Ultimate | $66.58 | 5TB encrypted storage | Yes | Yes | Yes | |
| MEGA | Free | Free | 20 GB | Yes | Yes | Yes | |
| MEGA | Pro I | $9.33 | 3 TB | Yes | Yes | Yes | |
| MEGA | Pro Flexi | $16.89 | 3 TB | Yes | Yes | — | |
| MEGA | Pro II | $18.73 | 10 TB | Yes | Yes | — | |
| MEGA | Pro III | $28.00 | 20 TB | Yes | Yes | — | |
| NordLocker | Free | Free | 3 GB | Yes | — | — | |
| NordLocker | Personal Plus | $6.99 | 2 TB | Yes | Yes | — | |
| NordLocker | Custom | $29.99 | — | Yes | Yes | — | |
| NordLocker | Business Plus | $29.99 | — | Yes | Yes | — | |
| NordLocker | Personal | — | 500 GB | Yes | — | — | |
| pCloud | Free | Free | Up to 10 GB | Yes | — | — | |
| pCloud | Premium Plus | $8.33 | 2TB | — | Yes | — | |
| pCloud | Ultra | $62.46 | 10 TB | Yes | — | — | |
| Proton Drive | Free | Free | 5 GB | Yes | — | Yes | |
| Proton Drive | Drive Plus | $3.99 | 200 GB | Yes | 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 | Yes | |
| Sync | Free | Free | 5 GB | Yes | Yes | — | |
| Sync | Teams Standard | $6.00 | 1 TB | Yes | — | — | |
| Sync | Solo Basic | $8.00 | 2TB | — | — | — | |
| Sync | Solo Pro | $20.00 | 6TB total zero-knowledg… | — | — | — | |
| Sync | Enterprise | — | n/a (custom requirement… | Yes | Yes | — | |
| Tresorit | Basic | Free | 3 GB | Yes | Yes | — | |
| Tresorit | Personal Lite | $4.75 | 50 GB | Yes | Yes | — | |
| Tresorit | Personal Essential | $11.99 | 1 TB | Yes | Yes | — | |
| Tresorit | Business Standard | $19.00 | 6 TB | Yes | Yes | — | |
| Tresorit | Personal Pro | $21.99 | 4 TB | Yes | Yes | — | |
| Tresorit | Business Plus | $24.00 | From 15 TB | Yes | Yes | — | |
| Tresorit | Enterprise | — | Custom amount | 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 Oct 21, 2026.
AI agents can query this database directly over MCP at
https://securecloudstorage.com/mcp — tools and details in llms.txt.