Standard cloud storage providers (Google Drive, Dropbox, OneDrive) can technically access your files. Their employees, law enforcement with a warrant, or a breach of their systems exposes your data. For developers handling proprietary code, client contracts, API key backups, and training datasets, this risk is unacceptable.
End-to-end encrypted (E2E) storage solves this: files are encrypted on your device before upload. The server never sees plaintext data. Even if the provider is breached, attackers get encrypted blobs — useless without your key.
Tresorit and Proton Drive are the two leading E2E encrypted storage providers. Both deliver zero-knowledge encryption, but they target different audiences. This comparison helps you pick the right one for your developer workflow.
Quick Comparison
| Feature | Tresorit | Proton Drive |
|---|---|---|
| Headquarters | Switzerland | Switzerland |
| Encryption | AES-256 + RSA-4096 (E2E) | AES-256 + Curve25519 (E2E) |
| Zero-knowledge | ✅ | ✅ |
| SOC 2 Type II | ✅ | ❌ |
| HIPAA compliant | ✅ (with BAA) | ❌ |
| GDPR compliant | ✅ | ✅ |
| Desktop sync client | ✅ (Windows, macOS, Linux) | ✅ (Windows, macOS) — Linux beta |
| Mobile apps | ✅ (iOS, Android) | ✅ (iOS, Android) |
| File versioning | ✅ (10 versions, up to unlimited) | ✅ (limited) |
| Secure link sharing | ✅ (password, expiry, download limit) | ✅ (password, expiry) |
| Team management | ✅ (full admin console) | ✅ (basic) |
| Storage (personal) | 1TB ($10/mo) | 200GB (free) / 500GB ($4/mo) |
| Storage (business) | 1TB/user ($14/user/mo) | 500GB/user ($8/user/mo) |
| Bundle options | Storage only | Proton Mail + VPN + Calendar + Drive |
Encryption: Both Excellent, Slightly Different
Tresorit’s Encryption
- Client-side encryption: Files encrypted with AES-256 before leaving your device
- Key exchange: RSA-4096 for sharing encryption keys between users
- Zero-knowledge: Tresorit cannot decrypt your files. Period.
- Encrypted metadata: File names and folder structure are also encrypted
- Link encryption: Shared links are encrypted; the decryption key is in the URL fragment (never sent to server)
Proton Drive’s Encryption
- Client-side encryption: Files encrypted with AES-256 before upload
- Key exchange: Curve25519 (elliptic curve cryptography) — smaller keys, equivalent security
- Zero-knowledge: Proton cannot access your file contents
- Encrypted metadata: File names encrypted; folder structure partially encrypted
- Integration with Proton ecosystem: Uses the same PGP-based key infrastructure as Proton Mail
Bottom line: Both provide genuine zero-knowledge encryption. The implementation details (RSA vs Curve25519) don’t matter for practical security. Your files are private on both platforms.
Compliance: Tresorit Wins Decisively
If your work involves regulated data, Tresorit is the only serious option between these two:
Tresorit certifications:
- SOC 2 Type II (independently audited controls)
- HIPAA compliant (Business Associate Agreement available)
- GDPR compliant (Swiss + EU data processing)
- ISO 27001 compliant
- TISAX (automotive industry security)
Proton Drive certifications:
- GDPR compliant
- Swiss privacy laws apply
- No SOC 2, HIPAA, or ISO 27001 (as of 2026)
When compliance matters for developers:
- Storing healthcare client data → Need HIPAA → Tresorit
- Enterprise client requiring SOC 2 from vendors → Tresorit
- Handling EU personal data → Both work (GDPR)
- Personal use, no regulatory requirements → Both work
For developer teams serving enterprise clients, SOC 2 compliance is increasingly a sales requirement. If prospects ask “where do you store sensitive files?” and you answer “Tresorit with SOC 2 Type II compliance,” that’s a conversation-ender. Proton Drive raises follow-up questions.
Team Features: Tresorit for Teams, Proton for Individuals
Tresorit Team Features
Tresorit was built for team collaboration:
- Admin console: Full visibility into team usage, device management
- Granular permissions: View-only, edit, download-restricted, or full access per folder
- Remote wipe: Remove access on lost/stolen devices
- DLP policies: Prevent screenshots, restrict copy/paste, watermark documents
- Audit logs: Complete trail of who accessed what and when
- Integration APIs: Connect Tresorit to existing workflow tools
Proton Drive Team Features
Proton Drive’s collaboration is more basic:
- Shared folders: Share folders with other Proton users
- Link sharing: Password-protected links with expiry dates
- Basic admin: Manage team members, assign storage
- Family plan: Share storage across up to 6 users
Proton Drive is evolving rapidly, but its team features are currently several years behind Tresorit’s. The focus has been on the individual privacy experience rather than enterprise collaboration.
Developer-Specific Use Cases
Storing Sensitive Project Files
Tresorit approach:
- Create a “Credentials Backup” tresor (encrypted folder)
- Store:
.envfiles, SSH key backups, SSL certificates, service account JSON files - Set: no download permission for shared members (view-only in browser)
- Enable: file versioning to track changes over time
Proton Drive approach:
- Create a folder for sensitive files
- Upload encrypted files
- Share via link with password protection
- Less granular control over what recipients can do
Sharing Files with Clients
Tresorit: Create a branded, password-protected link with:
- Expiry date (auto-revoke after project ends)
- Download limit (prevent mass distribution)
- View-only mode (files viewable but not downloadable)
- Watermarking (identify leak source)
- Custom branding on the download page
Proton Drive: Create a password-protected link with:
- Expiry date
- Password protection
- That’s about it
For freelance developers sharing deliverables with clients, Tresorit’s link features are significantly more professional and secure.
Syncing Across Development Machines
Tresorit sync:
- Selective sync (choose which folders sync to which devices)
- Smart sync (files appear in filesystem but download on demand)
- Conflict resolution for simultaneous edits
- Linux support (full desktop client)
Proton Drive sync:
- Full folder sync on Windows and macOS
- Linux support in beta (limited functionality)
- Basic conflict handling
- Simpler sync (fewer options, fewer problems)
Pricing: Proton is Cheaper, Tresorit is More Feature-Rich
| Plan | Tresorit | Proton Drive |
|---|---|---|
| Free | ❌ (14-day trial) | 5GB |
| Individual (basic) | $10/mo (1TB) | $4/mo (200GB) |
| Individual (plus) | $16/mo (4TB) | $10/mo (500GB, Proton Unlimited bundle) |
| Business | $14/user/mo (1TB/user) | $8/user/mo (500GB/user) |
| Enterprise | Custom pricing | Custom pricing |
Proton’s bundle advantage: The Proton Unlimited plan ($10/mo) includes Drive (500GB), Mail, VPN, Calendar, and Pass. If you’d use multiple Proton services, the bundle is excellent value.
Tresorit’s value proposition: You’re paying more ($10-14/mo), but you get compliance certifications, enterprise team features, advanced sharing controls, and dedicated business support. The premium is justified for professional use.
The Proton Ecosystem Advantage
Proton’s strongest argument isn’t Drive alone — it’s the ecosystem:
- Proton Mail: E2E encrypted email
- Proton VPN: No-logs VPN service
- Proton Calendar: Encrypted calendar
- Proton Pass: Password manager
- Proton Drive: Encrypted storage
All on one subscription, all under Swiss jurisdiction, all zero-knowledge encrypted. For developers who want a single privacy-focused ecosystem, Proton is compelling.
Tresorit’s counterpoint: It does one thing — encrypted file storage — and does it better than Proton Drive. If you need the best encrypted storage specifically (not an ecosystem), Tresorit wins.
My Recommendation
Choose Tresorit if:
- You work with enterprise clients who require SOC 2/HIPAA compliance
- You need advanced team features (granular permissions, audit logs, DLP)
- You share sensitive files with clients and want professional link controls
- You need reliable Linux desktop sync
- File storage quality matters more than ecosystem breadth
- Budget isn’t the primary concern
Choose Proton Drive if:
- You’re an individual developer or very small team
- You want the Proton ecosystem (Mail + VPN + Calendar + Drive)
- Budget is important and $4-10/mo is your range
- You don’t have enterprise compliance requirements
- You primarily need personal encrypted backup
- You’re already a Proton Mail user
For more encrypted storage options, check our encrypted cloud storage roundup for developers. Privacy tools work best as a complete stack — see our developer privacy checklist for the full setup. For compliance specifically around AI and personal data, our AI GDPR guide for developers covers the regulatory landscape.
FAQ
Can Tresorit or Proton Drive replace Google Drive for collaboration?
For real-time collaboration (simultaneous editing, comments, suggestions), neither matches Google Drive. Both are encrypted storage with sharing capabilities, not collaboration suites. Use them for storing and sharing sensitive files, not for live document editing. For collaboration, use Google Docs/Notion for non-sensitive work and Tresorit/Proton for sensitive file storage.
Is the free Proton Drive tier actually useful?
The free 5GB tier is fine for storing critical files (credential backups, SSH keys, certificates) that don’t take much space. It’s not enough for project files, datasets, or media. Think of it as an encrypted safe deposit box rather than a file sync solution. If you need more space, the $4/mo tier (200GB) covers most individual developer needs.
Does encryption slow down file sync noticeably?
Modern devices handle AES-256 encryption without noticeable performance impact. Both Tresorit and Proton Drive encrypt/decrypt at speeds limited by your internet connection, not the encryption algorithm. You won’t notice a difference compared to Dropbox or Google Drive in daily use. Large files (multi-GB datasets) take the same time as they would on any cloud storage.
Can I use Tresorit for backing up my entire development environment?
You can, but it’s expensive. A full dev environment (Docker images, node_modules, dependencies) could easily exceed 1TB. Use Tresorit for sensitive files specifically (credentials, proprietary code, client data). Use standard backup tools (Time Machine, restic to S3) for full system backups where zero-knowledge encryption isn’t required.
Which is better for sharing encrypted files with non-technical clients?
Tresorit. Their shared link experience is cleaner: clients click a link, optionally enter a password, and see a branded download page. No Proton account required. Proton Drive links work similarly but lack branding, download limits, and view-only modes. For professional client interactions, Tresorit’s link features make a better impression.