Cryptomator
Open-source client-side encryption for cloud storage files.
Alternatives · 2026
Alternatives to Proton Drive
End-to-end encrypted cloud storage from the Proton team.
10 hand-curated alternatives from MintedSaaS's directory. See the Proton Drive listing →
Proton Drive is an end-to-end encrypted cloud storage service built by the Proton team, best known for ProtonMail. Files are encrypted on your device before leaving it, meaning Proton can't read your data even if served with a legal request. It integrates with the broader Proton ecosystem—Proton VPN, ProtonMail, and Proton Calendar all share the same account—making it one piece of a privacy-focused productivity suite. The service is popular with privacy-conscious individuals, journalists, activists, and organizations working with sensitive documents in jurisdictions with restrictive data laws.
Users typically adopt Proton Drive for file backup and sharing workflows where encryption is non-negotiable. A lawyer might use it to store client confidentials; a remote team might share encrypted project files; a researcher might archive sensitive interviews. The product appeals to buyers who've already invested in other Proton services and want unified privacy rather than piecing together tools from different vendors. It's less about replacing general-purpose cloud storage and more about replacing it with a version your ISP, cloud provider, or government can't snoop on.
What we offer that competes
Filen
End-to-end encrypted cloud storage and file sharing from Germany.
Tresorit
Zero-knowledge encrypted file sharing for businesses.
Internxt
Open-source-friendly end-to-end encrypted cloud storage.
pCloud
Swiss cloud storage with optional zero-knowledge encryption add-on.
Sync.com
Zero-knowledge cloud storage and file sharing from Canada.
MEGA
End-to-end encrypted cloud storage with a generous free tier.
Box
Enterprise cloud content management with strong governance.
Dropbox
Cloud file storage and sync across devices and teams.
Google Drive
Cloud storage and file collaboration inside Google Workspace.
What to look for
- Whether encryption keys are stored on your device or the provider's servers, affecting whether they can decrypt your files.
- Whether the product publishes independent security audits or penetration test results from third-party firms.
- Whether you can set expiration dates and access-control rules on shared file links without involving the recipient.
- Whether the product supports real-time collaboration inside encrypted vaults or stores only static encrypted files.
- Whether you can point the storage backend to your own S3 bucket, Backblaze B2, or other third-party infrastructure.
- Whether the product integrates with existing tools like Microsoft Office, Google Workspace, or Slack without decrypting files server-side.
FAQ
What are the best alternatives to Proton Drive?
Cryptomator, Filen, Tresorit, and Internxt all offer end-to-end encryption without requiring you to trust the provider with your data. Cryptomator is open-source and self-hostable; Filen and Internxt are privacy-first startups with affordable plans; Tresorit is enterprise-grade but pricier. Sync.com and pCloud also encrypt data client-side, though their business model is more traditional SaaS than privacy startup.
Are there free alternatives to Proton Drive?
Cryptomator is free and open-source, though it requires you to provide your own storage (Google Drive, Dropbox, OneDrive, or self-hosted). Filen offers 10 GB free, Tresorit offers 3 GB, and pCloud offers 10 GB. MEGA historically offered 50 GB free but now offers 20 GB; encryption is built-in but MEGA's privacy track record is disputed.
How do I choose end-to-end encrypted cloud storage for my business?
Prioritize whether you need client-side encryption (where your provider can't access your data) or server-side encryption (industry-standard but the provider holds the keys). Then check for audit trails, multi-user access controls, and whether the provider publishes security audits. Box and Dropbox support business workflows but don't encrypt end-to-end by default; Tresorit and Internxt do.
What platforms do Proton Drive alternatives support?
Most encrypted alternatives—Cryptomator, Filen, Tresorit, Internxt, Sync.com, and pCloud—offer iOS and Android apps plus web and desktop clients. MEGA and Box have similar coverage. Google Drive and Dropbox are available on every platform. Check your specific OS before committing if you're on niche hardware.
Can I share files securely with someone outside my organization?
Yes, but implementation varies. Proton Drive, Tresorit, Internxt, and Sync.com let you share encrypted links with password protection and expiration dates. Cryptomator requires the recipient to decrypt manually unless you use a compatible vault manager. MEGA, Box, and Dropbox allow sharing but use weaker encryption models.
What's the difference between zero-knowledge and encrypted cloud storage?
Zero-knowledge means the provider has no ability to read your data because you hold all encryption keys. End-to-end encrypted storage is the same thing. Traditional encrypted storage (used by Dropbox and Google Drive) means the provider encrypts your data at rest but controls the keys, so they can decrypt and read it if needed.
Do encrypted storage alternatives work with version control and office tools?
Some do, some don't. Tresorit and pCloud integrate with Microsoft Office and Google Workspace for real-time collaboration inside encrypted vaults. Cryptomator works with most desktop apps but doesn't support live online editing. Proton Drive has limited third-party integration; Filen and Internxt focus on storage, not productivity apps.
How much does end-to-end encrypted storage typically cost?
Filen and Internxt start around $2–4 per month for 100 GB. Tresorit is $5–7 per month per user for 200–500 GB. Sync.com is $8 per month for 2 TB. pCloud is $4.99 per month for 500 GB or $9.99 per month for 2 TB. Proton Drive starts at $4.99 per month for 200 GB. MEGA and Google Drive undercut pricing but trade encryption for convenience.