Tresorit vs Proton Drive

Tresorit and Proton Drive are both Swiss, end-to-end encrypted cloud storage services. Tresorit has no free plan and its pages are aimed at business teams, with data rooms, single sign-on and a choice of data centres. Proton Drive has a free 5 GB tier and open-source apps, and sits inside the wider Proton account.

Editor Sebastiaan Smits

Published Last reviewed How we review

Choose Tresorit if

you run a team that needs data rooms, single sign-on, audit features or a chosen data-centre region, and accept paying from the first day after a trial.

Read the Tresorit review

Choose Proton Drive if

you want to start on a free 5 GB tier, use one account across Proton's other services, or prefer apps whose code is public and audited.

Read the Proton Drive review

Tresorit and Proton Drive side by side

 TresoritProton Drive
Company Tresorit AG (Swiss Post subsidiary) Proton AG
Headquarters Zurich, Switzerland Geneva, Switzerland
Founded 2011 2014
Jurisdiction Switzerland (adequacy decision, outside the EEA) Switzerland (adequacy decision, outside the EEA)
Where the data sits Switzerland, Ireland, Netherlands Switzerland and Germany, on server hardware and network Proton owns
Pricing From about €10.42/month (Personal) Free 5GB / Drive Plus 200GB at €4.99/month or €47.88/year
Entry-level list price (vendor site, checked 20 October 2026) Plan prices did not render in the page text; Personal Lite 50 GB, Essential 1 TB, Pro 4 TB, 14-day free trial, no free tier Free 5 GB; Drive Plus 200 GB at 4.99 a month (shown in USD on a US-localised fetch, the site records EUR 4.99); Drive Professional 1 TB per user
Free tier or trial 14-day trial, no free tier Free 5GB tier; 30-day money-back guarantee on paid plans
Certifications and checks Independently audited, zero-knowledge ISO 27001 (stated for Proton for Business); Drive apps audited by Securitum, report published
Source code Closed source Open source
Usually replaces Dropbox, Google Drive, OneDrive Google Drive, Dropbox, OneDrive, iCloud Drive
Position in our Cloud Storage guide #1 of 11 #9 of 11

Both are listed in our European Cloud Storage guide. The table is built from the same directory data as those entries, except the list price, which is quoted from each vendor's own pricing page (see Sources below); how we check it is described in the editorial process.

Where Tresorit and Proton Drive differ

Across the five points below, Tresorit has the edge on 2 points, Proton Drive on 2 points and one is a tie. A count like that is a summary, not a verdict: the point that matters to you may be the one the other product wins.

Starting for free

Proton Drive's pricing page offers a Free plan with 5 GB and a 30-day money-back guarantee on paid plans. Tresorit has no free tier: its pricing pages push a free trial, then paid plans, with Personal Lite at 50 GB. If you only need to try encrypted storage, Proton Drive costs nothing to keep.

Edge: Proton Drive

Personal storage plans

Tresorit's personal plans run Lite (50 GB, 2 GB file limit), Essential (1 TB, 10 GB limit) and Pro (4 TB). Proton Drive's page shows Drive Plus at 200 GB for 4.99 a month, Unlimited at 500 GB with VPN, Duo at 2 TB. Tresorit's price numbers did not render in the page text, so cost cannot be compared directly.

No clear winner on this point.

Business collaboration features

Tresorit's business page lists Professional (4 TB, 1 user), Business (from 3 users) and Business Pro (from 5 users), with data rooms, single sign-on, custom admin policies and dynamic watermarks on the higher tiers. Proton Drive's business offer is Drive Professional at 1 TB per user. Tresorit lists the deeper admin and sharing controls.

Edge: Tresorit

Where data is stored

Tresorit says Business customers can pick a data centre, from Switzerland, Germany, France, Ireland, the Netherlands and others, and that accounts without the option go to Ireland. Proton's terms describe the service as run by Proton AG in Geneva, and the site states storage in Switzerland and Germany. Only Tresorit lets an admin choose the region.

Edge: Tresorit

Ownership and openness

Proton AG says it is supervised by the non-profit Proton Foundation, and the site records open-source apps with a published Securitum audit. Tresorit AG in Zurich lists ISO 27001, GDPR, TISAX and FINRA, but its code is not open source. Proton's public code gives outsiders more to check.

Edge: Proton Drive

When neither Tresorit nor Proton Drive fits

If you want self-hosting or a provider inside the EU, look at Nextcloud (self-hostable) or Internxt (Spain). kDrive is another option, though it is Swiss like these two. All three are on the site.

Tresorit vs Proton Drive: questions

Yes. Tresorit's privacy policy names Tresorit AG at Pfingstweidstrasse 60b in Zurich. Proton's terms name Proton AG at Plan-les-Ouates near Geneva. Both are outside the EU, under a Swiss adequacy decision.

Its pricing pages offer a free trial but no free tier. Proton Drive has a free 5 GB plan.

On Tresorit, Business customers can pick a data centre, and accounts without the option are placed in Ireland, per its data residency page. Proton Drive's site gives no such choice, only that storage is in Switzerland and Germany.

Tresorit lists single sign-on, custom admin policies and Active Directory features on its Business tiers. Proton Drive has a Drive Professional plan at 1 TB per user, with user access management.

Sources

Facts, prices and plan details on this page were checked on the vendors' own websites on . Prices and plans change; the vendor's current page is authoritative.

More head-to-head comparisons

Against the US incumbents