Cloud Storage

Best Apps Like Proton Drive: Top Encrypted Cloud Storage Alternatives in 2026

Proton Drive is open-source, independently audited, and backed by Swiss privacy law, integrating seamlessly with ProtonMail, Proton VPN, and Proton Calendar.

Why People Look for Proton Drive Alternatives

Google Drive and Dropbox are not zero-knowledge; Proton Drive encrypts everything client-side before upload.
iCloud is not open-source or independently audited; Proton Drive publishes its code on GitHub.
MEGA is not directly integrated with an encrypted email or VPN ecosystem.
Tresorit is more expensive for equivalent storage and is not open-source.

6 Best Alternatives to Proton Drive

Each app below addresses a specific gap in Proton Drive's offering. We picked them based on real user review patterns and feature differentiation.

MEGA

Encrypted cloud storage with 20 GB free and encrypted chat.

MEGA provides end-to-end encryption by default with 20 GB free storage — significantly more than Proton Drive's 1 GB free tier. It includes MEGA Chat for encrypted messaging and has desktop and mobile clients for all major platforms.

Users who want a large free encrypted storage tier without needing the full Proton suite. Free 20 GB; Pro Lite from $4.99/mo.
Explore MEGA data →

Sync.com

Zero-knowledge cloud storage based in Canada.

Sync.com includes zero-knowledge encryption on all plans with 5 GB free. It is a dedicated storage product without the multi-app ecosystem of Proton, but offers competitive pricing and Canadian data residency.

Users who want zero-knowledge encrypted storage as a standalone product. Free 5 GB; Personal Pro from $8/mo for 2 TB.
Explore Sync.com data →

Tresorit

Enterprise-grade end-to-end encrypted cloud storage.

Tresorit offers zero-knowledge encryption with GDPR, HIPAA, and ISO 27001 compliance. Owned by Swiss Post, it is a strong option for regulated industries. Higher pricing reflects its enterprise compliance feature set.

Regulated businesses needing compliance certifications with encrypted storage. Personal from $12.50/mo for 500 GB.
Explore Tresorit data →

Filen

Open-source zero-knowledge cloud storage from Germany.

Filen is open-source and audited with 10 GB free and competitive pricing. It is a newer service built specifically for privacy, with a clean interface and end-to-end encryption on all plans. Less mature ecosystem than Proton.

Privacy users who want open-source encrypted storage at competitive pricing. Free 10 GB; 100 GB from $2.99/mo.
Explore Filen data →

pCloud

Cloud storage with lifetime plans and optional zero-knowledge encryption.

pCloud offers 10 GB free, lifetime payment options, and optional zero-knowledge encryption via its Crypto add-on. It has fast CDN-powered transfers and a virtual drive that mounts without syncing all files.

Users who want a lifetime payment option and fast performance. Free 10 GB; Premium from $4.99/mo or lifetime from $199.
Explore pCloud data →

Google Drive

Cloud storage deeply integrated with Google Workspace.

Google Drive offers 15 GB free, real-time document collaboration, and AI-powered features. It is not zero-knowledge and Google can read your files, but offers unmatched integration with Gmail, Calendar, and Docs.

Users who prioritize productivity and collaboration over privacy. 15 GB free; Google One from $1.99/mo for 100 GB.
Explore Google Drive data →
How we found these alternatives

Proton Drive is based in Geneva, Switzerland, and is subject to some of the strongest privacy laws in the world. All apps are open-source on GitHub.

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