A OneDrive alternative that doesn’t look at your team’s data

Protect your files, projects, and client data with end-to-end encryption. Proton Drive gives your team a secure workspace to store, share, and collaborate without Big Tech access, AI training, or hidden tracking.

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Proton Drive vs OneDrive

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Private, end-to-end encrypted cloud storage
No sharing of your data
Open source and audited
No file size limits		Up to 250 GB per file
Explicitly rules out using your data for ads or AI		Partly
Jurisdiction and data protection	Switzerland — strong privacy laws protect your data	United States — your data may be accessed under US surveillance laws without a warrant
Free and paid plans
Easy sharing and collaboration
No compression
Web, desktop, and mobile apps

The OneDrive alternative that protects you with end-to-end encryption

At Proton, your privacy and security come first. Proton Drive uses end-to-end encryption to give you stronger protection than OneDrive and other cloud services.

Control who can see your data

OneDrive encrypts your files in transit and at rest, but Microsoft still has access to their content. With Proton Drive, only you and the people you share with can see your files. Even your metadata is encrypted, so we can't access file names, folder organization, or image previews.

Protect from breaches and leaks

Microsoft's cloud services — like SharePoint — have been breached in the past. If that ever happened to Proton, your data would remain unreadable. You're safe from cyberattacks, insider threats, and data leaks.

Work without being tracked

Store, back up, and work on your files knowing your privacy is protected. Big Tech, advertisers, data brokers, and surveillance systems aren't looking over your shoulder, profiling you, or selling your data.

Protect your data from AI use

Although Microsoft explicitly rules out using your file content (for business plans only), it may use your personal data and Copilot interactions for AI training. Proton Drive never scans or uses the contents of your files (including any customer or business data) for AI or any other purpose.

Keep out third-party access

Microsoft may share your personal data with affiliates, vendors, and partners. Proton never shares your data with anyone — your information and file content stay fully private, always under your control.

Stay compliant and build trust

Earn the trust of your clients and partners by showing your commitment to protecting sensitive information. Proton Drive is built to meet the toughest privacy standards, including GDPR and HIPAA. It's also ISO 27001-certified and SOC 2 Type II-verified.

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Store, share, and collaborate securely

Set up your own private workspace to store, back up, and share everything securely, from work documents to photo albums and video collections. Plus, you can use our online document editor and spreadsheet app to collaborate in real time with your team and share what you want — securely and on your terms.

Small businesses

Can manage files, invoices, and client documents securely, with full control over who sees what.

Professors and educators

Can store research, share lecture materials, and collaborate with students while keeping academic data confidential.

Agencies and marketing teams

Can upload campaign assets, share drafts with clients, and protect sensitive briefs from leaks or unauthorized access.

Creative professionals

Can organize and share large design files or media projects without worrying about compression, tracking, or privacy loss.

Ready to leave Microsoft behind?

Move your files from OneDrive in minutes, and work knowing your data will never be shared, sold, or used for ads or AI training. Proton Drive lets your team store and collaborate securely.

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Take full control of your files

Control who sees what

Share files the way you want through a secure link or a private invite. Choose who can view or edit, add password protection, and set expiration dates so links automatically stop working when you decide.

Revoke access after sharing

Stay in control after you share. You can adjust permissions, remove collaborators, or disable a link instantly, no matter where it’s been sent.

Restore and recover easily

Accidentally overwrote a document or deleted something too soon? With version history and a recoverable trash folder, you can restore previous versions or bring files back in seconds.

Collect files securely

Need input from clients, students, or collaborators? Let others upload files directly to a shared folder using a secure upload link. All they need is a free Proton Account.

Collaborate in real time

With Proton Docs and Proton Sheets, built into Proton Drive, you can add comments, use suggestion mode to review edits, and get updates when someone makes changes. It’s your team workspace, only it’s end-to-end encrypted.

Work across devices

Access your Proton Drive anywhere — on desktop, browser, or mobile. Your files stay synced and encrypted across every device, so you can pick up your work securely from any platform.

Proton Drive vs. OneDrive: frequently asked questions

How is Proton Drive different from OneDrive when it comes to control over my data?: Microsoft is increasingly pushing your work into the cloud by default. For example, new Word documents are now automatically saved to OneDrive, giving Microsoft — not you — control over where your files live and how they’re used.
Proton Drive takes the opposite approach: You decide what to upload, how to share it, and who can access it. And we never share your personal data or files with advertisers, partners, AI systems, or anyone else.
Can I work offline in Proton Drive?: Yes. With the Proton Drive desktop app, you can access and edit your files even when you’re offline. Any changes you make will sync automatically once you’re reconnected to the internet.
Can I migrate my files from OneDrive to Proton Drive?: Yes, you can easily move your documents from OneDrive to Proton Drive in just a few steps:
Download your files from OneDrive.
Upload them to Proton Drive using the web, desktop, or mobile app.
You can preview DOCX files in Proton Drive and open them in Proton Docs, which automatically converts them for secure, real-time editing and collaboration. The same goes for XLSX files into Proton Sheets.
What else do I get with a Proton for Business account?: Proton for Business gives you full access to our encrypted ecosystem, designed to help teams work productively and privately. Your account includes:
Proton Mail for secure business email communications and domain management
Proton Calendar for secure team scheduling
Proton Drive for private business cloud storage and collaboration
Proton Docs, the first-ever end-to-end encrypted online document editor
Proton Sheets, the online spreadsheet app that keep your business data secure
Proton VPN for encrypted connections and remote work
Proton Pass for secure password and credential management
Every product is protected with end-to-end encryption and hosted in Switzerland, under strong privacy laws that prevent unauthorized access and foreign surveillance.