Tresorit vs Proton Drive: Privacy Ecosystem for Individuals vs Zero-Knowledge Business Collaboration

End-to-end encrypted cloud storage used to be a niche concern. Now it’s table stakes for anyone serious about data privacy. Both Tresorit and Proton Drive are genuinely zero-knowledge encrypted from the ground up, but they’ve built around that foundation for very different audiences.

Proton Drive emerges from the Proton ecosystem, the same Swiss company behind ProtonMail and Proton VPN, and is designed to give privacy-conscious individuals an encrypted alternative to Google Drive. If you already use ProtonMail, adding Proton Drive is a natural extension of the same privacy-first philosophy: one encrypted account for email, files, calendar, and VPN.

Tresorit is also Swiss, also zero-knowledge, but built specifically for businesses and regulated industries. Where Proton Drive focuses on individual privacy, Tresorit focuses on enterprise compliance, team administration, and business-grade file sharing controls. HIPAA, GDPR, ISO 27001, DRM file protection, Azure AD integration, these are the differentiators that justify Tresorit’s higher price for organizations with regulatory obligations.

If you’re choosing between these two, the core question is: are you protecting personal privacy or managing organizational data risk? Here’s the full breakdown.

Tresorit Overview

Tresorit is a Swiss-based encrypted cloud storage platform that has been purpose-built for business teams since 2011. Its core promise, zero-knowledge end-to-end encryption with AES-256 keys that never leave your device in plaintext, is backed by a compliance stack that’s rare in any cloud storage product: HIPAA BAA availability, ISO 27001 certification, SOC 2 Type II, and GDPR-compliant Data Processing Agreements.

But Tresorit’s real value proposition isn’t just what it encrypts, it’s the enterprise controls on top of that encryption. Shared encrypted workspaces support role-based access controls, and admins can apply DRM-style restrictions to shared files: block downloads, prevent printing, restrict link forwarding, and set automatic link expiry. Full audit logs capture every access event. Microsoft 365 integration, an Outlook plugin for encrypted email attachments, and Azure Active Directory sync make Tresorit deployable in enterprise IT environments.

For businesses in healthcare, legal, finance, or any other regulated sector, Tresorit checks every compliance box while maintaining genuine zero-knowledge privacy. Explore Tresorit’s business plans to see which tier matches your team size and compliance requirements. Our guide to best secure cloud storage for business covers where Tresorit sits in the broader enterprise market.

Proton Drive Overview

Proton Drive is the cloud storage arm of the Proton ecosystem, the Swiss privacy company best known for ProtonMail (now Proton Mail), one of the world’s most widely used end-to-end encrypted email services. Proton Drive launched in 2022 and brings the same zero-knowledge encryption philosophy to file storage.

Like Tresorit, Proton Drive is genuinely zero-knowledge: files are encrypted client-side before upload, and Proton cannot read your data. But the product is designed for individuals and privacy-focused personal users, not enterprise IT teams. The big draw is the ecosystem: one Proton account gives you encrypted email, cloud drive, calendar, VPN, and password manager under a single privacy-first umbrella.

Proton Drive is more affordable than Tresorit, especially for individuals. The free plan offers 1GB of storage, and the Proton Mail Plus bundle (which includes Drive, Mail, Calendar, and VPN) starts around $4/month. Storage-only Proton Drive plans offer up to 200GB for around $4/month. Proton Drive is open-source and has been independently audited. Visit Proton Drive’s website for current plan pricing and the full ecosystem bundle options.

Pricing Compared

The pricing gap between Tresorit and Proton Drive reflects their very different target markets.

Tresorit starts at approximately $15/user/month (Business Standard, billed annually) for teams. There is no permanent free plan, only a trial. Individual plans (Tresorit Solo) are available at a lower per-user price but without the full compliance and enterprise admin features. Enterprise plans are priced via sales conversation.

Proton Drive is dramatically more affordable for individual use. The free plan offers 1GB of storage. The Proton Drive standalone plan goes up to 200GB for around $4/month. The most popular option is the Proton Mail Plus or Proton Unlimited bundle: starting at approximately $4-10/month (billed annually), this includes Proton Drive, Mail, Calendar, VPN, and Pass (password manager) together, exceptional value for privacy-conscious individuals.

For a solo user comparing costs: Proton Unlimited at roughly $10/month gives you encrypted storage plus an entire privacy suite. Tresorit Business Standard at $15/user/month gives you just the storage, but with a compliance stack, DRM controls, and enterprise admin tools that Proton Drive doesn’t have. The right comparison depends entirely on whether you need those enterprise features.

Security & Encryption Features

This is the one area where Tresorit and Proton Drive are genuinely comparable: both are zero-knowledge by design. Tresorit uses AES-256 end-to-end encryption with keys generated on your device. Proton Drive uses AES-256 and RSA encryption, also client-side, also zero-knowledge. Both have been independently audited. Proton Drive is also open-source, which allows additional community scrutiny of its encryption implementation.

Where Tresorit pulls ahead is in the compliance documentation. Tresorit holds formal HIPAA BAA availability, ISO 27001 certification, and SOC 2 Type II, the paperwork that regulated industries need to demonstrate due diligence. Proton Drive has strong privacy credentials but does not provide HIPAA BAAs, ISO 27001 certification, or formal SOC 2 documentation. This is a meaningful gap for healthcare, legal, and financial services organizations.

Tresorit also adds DRM-style controls, preventing recipients from downloading, printing, or forwarding shared files, which Proton Drive does not offer. For organizations that need to control what happens to sensitive documents after they’ve been shared, this is a critical differentiator.

Collaboration & Business Tools

Tresorit’s collaboration features are enterprise-grade. Shared Tresors (encrypted workspaces) support multiple users with role-based permissions: view, download, edit, and reshare can each be controlled independently. Admins manage users via a central dashboard, with full audit logs showing who accessed what and when. Azure Active Directory integration enables single sign-on and automated user provisioning. The Outlook plugin makes sending encrypted email attachments as simple as attaching any file.

Proton Drive’s sharing features are simpler. You can share files and folders with end-to-end encrypted share links, and Proton has been expanding its sharing capabilities since launch. However, it lacks the enterprise admin dashboard, role-based team permissions, audit logs, DRM controls, and Microsoft 365 integration that Tresorit provides. For small teams or individuals collaborating privately, Proton Drive’s sharing is functional, it’s just not built for enterprise file governance.

Teams managing sensitive workflows will find the comparison in our roundup of best encrypted file sharing tools for remote teams useful for understanding where each platform fits in a broader security-conscious toolchain.

Ease of Use & Platform Support

Proton Drive has been rapidly improving its apps since launch. Desktop clients are now available for Windows and Mac, with a Linux client in beta. Mobile apps for iOS and Android are polished and reliable. The web interface is clean and intuitive, users comfortable with Google Drive will find the layout familiar. If you already use ProtonMail, the transition to using Proton Drive feels seamless.

Tresorit’s interface is professional and clean, with desktop clients on Windows, Mac, and Linux plus mobile apps on iOS and Android. The admin console for managing team permissions requires some familiarity with enterprise security concepts. For everyday file access, Tresorit is straightforward, but the policy configuration layer is more complex than Proton Drive’s simpler approach.

Both platforms support offline access to synced files and web-based access. Proton Drive has the edge on consumer-friendliness and ecosystem cohesion; Tresorit has the edge on enterprise deployment and admin control depth.

Side-by-Side Comparison Table

Feature	Tresorit	Proton Drive
Free Plan	No (trial only)	Yes, 1GB free
End-to-End Encryption	Yes (AES-256)	Yes (AES-256 + RSA)
Zero-Knowledge	Yes	Yes
Open Source	No	Yes
HIPAA Compliance	Yes (BAA available)	No
GDPR / ISO 27001	Yes (both)	GDPR-aligned (no ISO 27001)
DRM Controls	Yes	No
Team Collaboration	Encrypted workspaces, role-based	Shared folders, basic sharing
Storage Limits	From 1TB/user (Business)	1GB free, up to 500GB paid
Mobile App	iOS & Android	iOS & Android
Ecosystem Integration	Microsoft 365, Outlook, Azure AD	Proton Mail, Calendar, VPN, Pass
Starting Price	~$15/user/mo (Business Standard)	$0 free / ~$4/mo (bundle)

Which Should You Choose?

Pick Tresorit if: You’re deploying cloud storage for a business team that operates in a regulated environment. Healthcare organizations needing HIPAA BAAs, legal firms protecting privileged communications, financial services teams with compliance audit requirements, Tresorit has the certifications and the controls. Also choose Tresorit if your team needs DRM-style file sharing controls or enterprise identity management integration.

Pick Proton Drive if: You’re an individual or privacy-conscious personal user who wants encrypted file storage as part of a broader privacy setup. The Proton Unlimited bundle (Mail + Drive + VPN + Calendar + Pass) is remarkable value for anyone who wants to de-Google their digital life. Proton Drive’s open-source credentials and independent audits give it strong credibility for individual privacy needs.

FAQs

Is Proton Drive really zero-knowledge?

Yes. Proton Drive uses client-side encryption before upload, your files are encrypted on your device before they reach Proton’s servers. Proton cannot read your files. This has been independently audited, and the client code is open-source for additional community verification.

Is Tresorit zero-knowledge too?

Yes. Tresorit has been zero-knowledge by design since its founding in 2011. Encryption keys are generated on your device and never transmitted in plaintext. Tresorit’s servers store only encrypted ciphertext. This architecture has been independently audited.

Can Proton Drive sign a HIPAA BAA?

No. Proton Drive does not currently offer HIPAA Business Associate Agreements. Organizations handling Protected Health Information under HIPAA should use Tresorit, which does provide BAAs on qualifying business plans.

Does Proton Drive integrate with Microsoft 365?

No. Proton Drive integrates with the Proton ecosystem (Proton Mail, Calendar, VPN, Pass) but does not have native Microsoft 365, Outlook, or Azure AD integration. Tresorit offers all of these integrations, making it more compatible with enterprise Microsoft environments.

What is Proton’s open-source advantage?

Proton has published the client-side code for Proton Drive (and Proton Mail) on GitHub, allowing independent security researchers and the community to audit the encryption implementation. This is a meaningful transparency advantage over closed-source competitors, including Tresorit. However, open source doesn’t compensate for the lack of enterprise compliance certifications.

Is Tresorit better than Proton Drive for teams?

Yes, for business teams with compliance or governance requirements. Tresorit’s encrypted workspaces, role-based permissions, admin dashboard, audit logs, DRM controls, and Microsoft 365 integration are purpose-built for enterprise deployments. Proton Drive’s sharing features are improving but remain oriented toward individual and small-team use.

Can I use Proton Drive without ProtonMail?

Yes. Proton Drive is available as a standalone product with its own storage plans. However, the best value comes from the Proton Unlimited bundle, which combines Drive, Mail, Calendar, VPN, and Pass under a single subscription at a price lower than many competing storage-only services.

Does Tresorit work on Linux?

Yes. Tresorit provides a Linux desktop client alongside its Windows, Mac, iOS, and Android apps. This makes it usable across the full range of enterprise and developer environments. Proton Drive also has a Linux client (in beta), giving privacy-focused Linux users options on both platforms.

Which has stronger encryption, Tresorit or Proton Drive?

Both use strong, industry-standard encryption, AES-256 for symmetric encryption and RSA/ECC for key exchange. Proton Drive uses a combination of AES-256 and RSA-2048 or ECC, which is considered robust. Tresorit uses AES-256. In practical terms, both are far beyond any realistic brute-force attack. The difference in their security postures lies in compliance certification and enterprise controls, not raw encryption strength.

Is Proton Drive good for businesses?

Proton Drive works for small businesses and freelancers who want encrypted storage within the Proton ecosystem. It’s not designed for enterprises needing formal compliance certifications, audit logs, DRM file controls, or enterprise identity management. As Proton’s business feature set matures, this may change, but currently Tresorit is the stronger enterprise choice.

Does Tresorit have a free plan?

Tresorit does not offer a permanent free plan for business or personal use, only a time-limited trial. Proton Drive’s free tier (1GB) is limited but genuine, and the paid plans are significantly more affordable for individual users than Tresorit’s business pricing.

Can Tresorit prevent file downloads after sharing?

Yes. Tresorit’s DRM controls allow admins to share files with view-only restrictions, preventing recipients from downloading the original file. You can also block printing, restrict link forwarding, and set automatic expiry on shared links, giving organizations control over sensitive documents even after they’ve been shared externally. Proton Drive does not currently offer comparable DRM controls.

Final Word

Tresorit and Proton Drive share the same foundational commitment to zero-knowledge encryption, but they’ve built very different products on top of that foundation. Proton Drive is the privacy ecosystem play for individuals who want encrypted everything under one Swiss roof, at prices that make it accessible to anyone. Tresorit is the enterprise security tool for organizations that need compliance documentation, team administration, and DRM controls that go well beyond what any consumer-facing product delivers.

Choose based on your actual situation. If you’re a solo professional or privacy enthusiast, Proton Drive’s bundle value is hard to beat. If you’re making a purchasing decision for a regulated business, healthcare, legal, finance, or enterprise IT, Tresorit is the only option in this comparison that can check every required box.

For more context on encrypted storage and business file sharing options, see our roundup of best secure cloud storage for business, best encrypted file sharing tools for remote teams, and our list of top Dropbox alternatives. If Tresorit’s compliance credentials match your business requirements, start a Tresorit trial, the DRM controls and admin dashboard are worth exploring before you commit.