The 7 tools reviewed
Geneva, Switzerland
Founded 2014
Free 5GB / Drive Plus 200GB at €4.99/month or €47.88/year
Free 5GB tier; 30-day money-back guarantee on paid plans
Best for: Encrypted storage with published apps and a public audit
Proton Drive is end-to-end encrypted storage from Proton AG in Geneva, and it encrypts file names as well as the files themselves. The apps for iOS, Android, Windows and macOS are published under GPL-3.0, and Securitum audited them with the report made public. Of the seven services here, it is the one where the encryption claim rests most on material you can open yourself.
Proton owns the server hardware and network in Switzerland and Germany, so no hyperscaler sits underneath. A free 5GB tier exists, and Drive Plus costs €4.99 a month or €47.88 a year for 200GB, with a 30-day money-back guarantee. Docs and Sheets are included, which goes further towards a workspace than most storage with this level of encryption. Switzerland is outside the EEA and relies on an adequacy decision.
What Proton Drive does well
- File names encrypted as well as contents
- GPL-3.0 apps with a public Securitum audit
- Docs and Sheets included
Where Proton Drive falls short
- Switzerland is outside the EEA
- No server-side search across file contents
Standout feature. Encrypted file names on servers Proton owns, with audited open apps.
Zurich, Switzerland
Founded 2011
From about €10.42/month (Personal)
14-day trial, no free tier
Best for: Business sharing where metadata must stay encrypted too
Tresorit encrypts files on the user's device before upload and, according to its tool page, also encrypts file names, folder structures and metadata. Each file gets its own key, and those keys are protected by a master key derived from the password. Tresorit AG is a Swiss Post subsidiary based in Zurich, founded in Budapest in 2011.
The sharing controls are the reason to choose it for a company: link passwords, expiry dates, download limits and shared folders with read-only, editor and manager roles, with encryption kept intact for outside recipients. Admin features include SSO through SAML 2.0, device management and audit logs. The client code is closed, and the page names ISO 27001 and independent audits without a public report.
What Tresorit does well
- File names, folders and metadata encrypted
- Granular link and folder permissions
- SSO via SAML 2.0 and audit logs for admins
Where Tresorit falls short
- No free tier, only a 14-day trial
- Closed source, so the code cannot be read
Standout feature. Encryption that covers metadata, combined with business-grade sharing controls.
Germany
Founded 2020
Free 10GB / from about €1.99/month
Free 10GB tier
Best for: Everyday encrypted storage where every file is covered
Filen, from Filen Cloud Dienste UG in Germany, encrypts every uploaded file on the device with AES-256, and the tool page stresses that encryption is not optional or limited to certain folders. Keys derive from your password and never leave the device. The desktop and mobile clients are open source, which lets researchers check the claim that files are encrypted before upload.
The 10GB free plan has all security features, Pro I costs €1.99 a month for 100GB, and lifetime plans exist. Version history, encrypted notes and contacts sync, and search over encrypted metadata run on the device. There is no real-time co-editing or comment system, and the page does not mention an independent audit, so open clients are the verification route.
What Filen does well
- Every file encrypted, not just a folder
- Open source clients
- 10GB free plan with full security features
Where Filen falls short
- No real-time co-editing or comments
- No independent audit mentioned on the tool page
Standout feature. Whole-account encryption with search and versioning kept on the device.
Hamburg, Germany
Founded 2008
€76/year for 1 user with 10GB (Professional Starter, excl. VAT)
30-day trial
Best for: Encrypted team folders with keys held by the users
TeamDrive Systems GmbH in Hamburg, founded in 2008, encrypts on the client with AES-256 and leaves the keys with the users, so TeamDrive stores only ciphertext wherever the data ends up. The hosted service runs in IONOS SE data centres in Frankfurt, and the same encrypted folders can also run hybrid, on your own servers, or on Azure or OneDrive storage you choose.
Outside verification is stronger here than for most: ISO 27001:2022 from TÜV Nord and the EuroPriSe privacy seal. Guest licences are unlimited and free, which suits firms working with clients. It is closed source, and Professional Starter costs €76 a year for one user with 10GB, excluding VAT, which is business pricing rather than consumer pricing.
What TeamDrive does well
- Keys stay with users on every storage back end
- ISO 27001:2022 and EuroPriSe seal
- Unlimited free guest licences
Where TeamDrive falls short
- Closed source
- €76 a year for 10GB is expensive per gigabyte
Standout feature. The same encrypted team folder can live in Frankfurt, on your hardware or on Azure.
Valencia, Spain
Founded 2020
Free 1GB / from about €0.89/month; lifetime plans available
Free tier
Best for: Zero-knowledge storage with post-quantum key exchange
Internxt, founded in 2020 in Valencia, files its encryption under zero knowledge: files are encrypted on the device with AES-256, keys derive from the password, and the company says it cannot access the content. Its distinguishing feature is Kyber 512 post-quantum cryptography for key exchange, which matters for records that must stay confidential for decades.
Client applications are open source, and the tool page lists HIPAA, ISO 27001 and SOC 2 compliance. Storage sits in European data centres. A free 1GB tier exists, paid plans start at about €0.89 a month for 20GB, and lifetime plans are available. The page admits a younger ecosystem, limited third-party integration and no password recovery.
What Internxt does well
- Kyber 512 post-quantum key exchange
- Open source clients
- HIPAA, ISO 27001 and SOC 2 listed
Where Internxt falls short
- Only 1GB on the free tier
- Limited integrations and no password recovery
Standout feature. Post-quantum key exchange at a low entry price.
Wijchen, Netherlands
Founded 2026
Starter €1.99/month (100GB, 1 user), Basic €3.99/month (200GB, 1 user), Pro €10.99/month (1TB, extra TB at €10.99 each up to 99TB); annual billing equals ten months; Teams (€54.95/month, 5TB, 2 seats) announced as coming soon; 14-day free trial, no free plan
14-day free trial, no card or iDEAL needed to start (10 GB of storage during the trial); full access straight away if you pay by card or iDEAL; no free plan
Best for: Early adopters who accept an unaudited, open source start
Beebeeb is the newest service here and says so itself. Initlabs B.V. in Wijchen, the Netherlands, encrypts files with AES-256-GCM before upload, protects the master key with a 12-word recovery phrase and states that it cannot read contents or file names. The clients and encryption core are open on GitHub.
The gap is verification and maturity. Beebeeb says no third-party audit exists yet and plans one with published findings. It was founded in 2026, the macOS and Windows desktop apps are in beta, and iOS, Android and a Linux desktop app are listed as coming soon. Pricing is plain: 1TB costs €10.99 a month, 100GB starts at €1.99, and there is a 14-day trial but no free plan. Data centres are in Germany and Finland.
What Beebeeb does well
- Open clients and encryption core
- Passkey sign-in and revocable share links
- Data centres in Germany and Finland
Where Beebeeb falls short
- No independent audit yet
- No mobile apps yet and desktop apps in beta
Standout feature. Open code and plain pricing, with an honest statement that the audit is still to come.
Wales, United Kingdom
Founded 2019
Free 10GB / from about €1.67/month
Free 10GB tier
Best for: Design-led storage with an optional encrypted folder
Icedrive, run by ID Cloud Services Ltd in Wales, uses client-side Twofish encryption for files placed in its encrypted folder. The keys stay on your device, so Icedrive cannot read what is in that folder even if compelled. The tool page is explicit that regular files get standard encryption in transit and at rest and can theoretically be accessed by Icedrive.
That scope is why it ranks last. The rest of the package is attractive: a 10GB free plan including the encrypted folder, Lite at €1.67 a month for 150GB, Pro at €4.17 for 1TB, and a virtual drive with streaming on Windows. The company is British, outside the EU, and the data sits in the UK and Germany. The service is closed source.
What Icedrive does well
- 10GB free plan includes the encrypted folder
- Virtual drive with on-demand streaming
- Low entry price
Where Icedrive falls short
- Encryption applies only to the encrypted folder
- Closed source and UK-based
Standout feature. A generous free plan that includes zero-knowledge encryption for one folder.