The best Box alternative for secure cloud storage
Proton Drive is a more secure and private Box alternative. While Box can access your sensitive business data, Proton is end-to-end encrypted, so your files and docs are private to you and always under your control.
Proton Drive vs. Box: At a glance
 Proton Drive |  | |
|---|---|---|
Data privacy with end-to-end encryption | Yes | No |
Publicly audited to confirm security | Yes | No |
Provider cannot access your files | Yes | No |
No file size limits | Yes | No |
Part of an encrypted suite | Yes | No |
Centralized admin controls | Yes | Yes |
Web, desktop, and mobile apps | Yes | Yes |
Password-protected and expiring share links | Yes | Yes |
A privacy-first Box alternative for business
Businesses need confidence that sensitive business data actually remains private. Proton Drive gives you that confidence with the technical guarantee that your files, docs, sheets, and images are secured with end-to-end encryption, so no one else can access them. Here’s what that means for you:
Keep your files truly private
Box encrypts data at rest and in transit, but it still has the technical ability to see your files, meaning your business data is not 100% private. By contrast, Proton Drive encrypts your files on your device before transmitting data to the cloud, so only your team and the people you share with can access your data — not Proton or anyone else.
Stay protected from breaches
Because Box doesn’t use end-to-end encryption, a data breach or insider threat can expose your files. If that ever happens to Proton Drive, the only thing that would leak are encrypted files that can't be decrypted. Drive also applies end-to-end encryption to metadata like file names.
Share securely internally and externally
Share sensitive documents with clients and colleagues without worrying about loose ends. Set passwords and expiration dates on shared links, track who accessed them, and revoke access instantly if your team changes or when a project wraps up.
Store and send large files of any type
For many organizations, Box’s per-file limits can become a bottleneck for video, creative assets, engineering files, and backups. Proton Drive does not impose a fixed per-file size limit; you can upload and share large files and videos without zipping, splitting, or compressing.
Trust in verifiable security
Box is closed-source, meaning it’s not possible to verify the security of their code. All Proton apps, including Drive, are open source and independently audited, so anyone can confirm and trust that our apps do what we claim. And because Proton is headquartered in Switzerland, your data is protected by some of the world's strongest privacy laws.
Sync across your devices
Proton Drive offers apps for Windows, Mac, Android, and iOS, so your teams can securely store, retrieve, and share files from anywhere while you retain centralized control over access and policies.
Beyond cloud storage, a complete encrypted suite
Proton Drive is part of Proton Workspace, a productivity-focused ecosystem that enables you to safely collaborate seamlessly with employees, contractors, and clients.
You can collaborate using our encrypted document editor for teams and spreadsheet editor for business, send encrypted emails in Proton Mail, protect your credentials in Proton Pass, lock down your business network with Proton VPN, and have secure video conferences with Proton Meet.
Proton Drive is also integrated with our AI assistant, Lumo, so you can work directly with your files in the cloud without exposing them to Big Tech or AI model training.
Secure your team’s sensitive work
Over 100,000 organizations trust Proton to protect their most sensitive data.
For law firms
Safeguard privileged client information, draft contracts, and share critical documents while maintaining attorney-client confidentiality using cloud storage for law firms.
For healthcare
Protect patient data and simplify HIPAA compliance with cloud storage that provides end-to-end encryption, access controls, and data accountability.
For financial services
Securely collaborate on and share investment portfolios, risk assessments, and budget reports while meeting regulatory requirements with a document management system for financial services.
For consultancies
Use cloud storage for professional services to securely share client deliverables and project files, with access controls that protect sensitive data even after it's shared externally.
Take full control of your business files
Switch to Proton Drive for cloud storage that values your business privacy as much as you.
Built for how your team works
Restore and recover easily
Accidentally overwrite a contract or delete a project file? Proton Drive keeps version history for up to 10 years, so you can recover previous versions and keep projects on track.
Get files from anyone
Need documents from a client or partner? Send them a secure upload link — no account required on their end, and everything they send is encrypted the moment it is uploaded.
Work together in real time
Edit proposals, reports, and spreadsheets with your team in Proton Docs and Sheets. Every keystroke is end-to-end encrypted, so sensitive work stays confidential.
Trusted by 100,000+ organizations for secure collaboration
Hear from the teams that trust Proton Drive to protect their most critical information.
“My 2026 goal: cut the digital noise and take back control of my data. My toolkit? Proton Mail and Proton Drive — my secure vault. In 2026, confidentiality isn’t optional, it’s the baseline. Time to move beyond the mainstream office ecosystem.”
Nicholas Schneider
Founder & Strategic Advisor in HealthTech at JuliaShift
“I use Proton for my email, calendar, drive, and VPN. The platform is end-to-end and zero-access encrypted. Unlike mainstream platforms that build advertising profiles from user activity, Proton keeps mine private. It's affordable, robust, sleek, and constantly improving. I like that they're building out an ecosystem of productivity tools, so it feels like I'm getting in early on something that will continue improving.”
Stephen M.
Manager, Operations & Systems at Community Foundations of Canada
“I'm still in the process of switching away from big US tech to European alternatives. Switching email has been so much easier than I feared. Proton Drive & Proton Docs seem like a perfectly fine replacement for Google Drive & Google Docs - I don't feel like I'm missing out.”
Gustav W.
Software Engineer at Climatic
Frequently asked questions
- What is the best alternative to Box cloud storage?
- Do I need a remote cloud backup solution for my business?
- Is Proton Drive safer than Box?
- What else do I get with a Proton for Business account?