End-to-end encrypted cloud storage. Swiss-based with zero-knowledge architecture.
Quick facts
Headquarters Zurich, Switzerland
CompanyTresorit AG
Founded2011
OwnershipAcquired
Hosting🇨🇭 Switzerland, 🇳🇱 Netherlands, 🇩🇪 Germany
InfrastructureMixed infrastructure
Data jurisdictionEEA
Open sourceNo
GDPRCompliant
PricingFreemium · from €10/mo
Free tierYes
PlatformsWeb, iOS, Android, Desktop
Languages
ENDEFRHUES
What people like
Zero-knowledge encryption is on by default for every file, not a paid add-on, and folder-level sharing controls are more granular than most encrypted storage competitors.
Worth knowing
Pricing runs noticeably higher than mainstream cloud storage for comparable space, and the free tier is quite limited before you have to upgrade.
Incorporated in Zurich, Switzerland – an EFTA country rather than a full EU member state.
25/30
Ownership & control
Acquired/corporate, EU/EFTA parent
Why this score?
Acquired by Swiss Post in 2021, which keeps ownership inside Switzerland but means Tresorit answers to a corporate parent rather than standing independently.
10/25
Data sovereignty
Mixed infra, all EU/EFTA-hosted
Why this score?
Runs on a mix of infrastructure across Switzerland, the Netherlands and Germany rather than infrastructure it owns outright everywhere.
18/30
Accountability & trust
GDPR compliant
Why this score?
GDPR-compliant, but the platform isn't open source and there's no independently published audit specific to Tresorit on record.
Spanish zero-knowledge cloud storage founded in Valencia in 2020. Open-source, end-to-end encrypted, ISO 27001:2022 certified. Audited by Securitum in 2025. 1M+ users, EU data centres via OVHcloud, post-quantum encryption. Also offers VPN and antivirus.
French company offering /e/OS, a de-Googled Android operating system, and Murena Cloud, a privacy-respecting alternative to Google Workspace. Founded by Gaël Duval, creator of Mandrake Linux. Phones shipped with zero Google services. EU-hosted cloud.
End-to-end encrypted cloud storage from a small German team, with all servers in Germany. Zero-knowledge AES-256 encryption, open-source apps, and one of the most generous free tiers in the category at 10GB - a genuinely private alternative to Dropbox and Google Drive.
End-to-end encrypted cloud storage from Proton AG in Geneva. Zero-knowledge architecture means even Proton cannot access your files. Own servers in Switzerland and Germany, ISO 27001 certified. Part of the Proton ecosystem alongside Mail, VPN, and Pass.
Zero-knowledge encrypted cloud storage built by a Welsh team. Client-side Twofish encryption, a slick drive-style interface, and a generous 10GB free tier - a British alternative to Dropbox and Google Drive that can't read your files.