4 Best European Box Alternatives in 2026

Tresorit is a Swiss end-to-end encrypted cloud storage and file collaboration platform with a zero-knowledge architecture: files are encrypted on your device before upload, and only you and explicitly authorised recipients can ever decrypt them. It holds the broadest compliance portfolio of any EU cloud storage solution: GDPR, HIPAA, ISO 27001, SOC 2, TISAX, ITAR, NIS2, and DORA.

Teams share files through encrypted tresor folders with granular access controls, watermarking, and the ability to revoke shared links instantly. Tresorit Engage provides secure data rooms for client and partner collaboration, while an eDiscovery module helps legal and compliance teams locate and export documents for regulatory requests.

Key benefits:

• Zero-knowledge E2E encryption means even Tresorit cannot access your files
• Encrypted team folders with granular permissions and instant access revocation
• Secure external sharing with password-protected, time-limited links
• HIPAA, TISAX, ITAR, and DORA compliance for heavily regulated industries
• eDiscovery module for locating files in response to legal and compliance requests
• Tresorit Engage with secure data rooms for client and partner document exchange
• Watermarking to trace leaked documents back to the source
• Available on Windows, macOS, iOS, Android, and web

Tresorit is headquartered in Zug, Switzerland, with operations in Budapest, Hungary. All data is stored on EU and Swiss infrastructure with customer-selectable data residency. Swiss law and GDPR govern all data handling, and the platform undergoes regular independent security audits with no U.S. entities involved in storage or processing.

Trusted by law firms, financial institutions, healthcare providers, and automotive manufacturers across Europe for provably secure file storage and external collaboration.

Proton Drive is the end-to-end encrypted cloud storage service from Proton, the Swiss privacy company behind ProtonMail. Every file is encrypted on your device before upload (not even Proton can access your data), and shared links can be password-protected with expiry dates. It includes Proton Docs and Sheets for encrypted real-time document and spreadsheet collaboration.

Available on web, Windows, macOS, iOS, and Android, Proton Drive syncs files automatically via a desktop folder. 5 GB of free storage is included with every Proton account, with upgrades that bundle Mail, Calendar, VPN, and Pass. An open-source codebase allows independent cryptographic verification by any researcher.

Key benefits:

• Client-side E2E encryption that encrypts files before they leave your device
• 5 GB free storage with every Proton account, no credit card required
• Password-protected sharing with configurable expiry on shared links
• Automatic mobile photo backups with encrypted collaborative album sharing
• Proton Docs and Sheets for encrypted real-time collaborative document editing
• Desktop sync folder on Windows and macOS for automatic file synchronisation
• Open-source code for independent cryptographic audit by the community

Proton AG is headquartered in Geneva, Switzerland, which operates under some of the world's strictest privacy laws, outside U.S. and UK jurisdiction. The service is GDPR-compliant, holds ISO 27001 certification, and is audited by independent security researchers. Switzerland's constitutional privacy protections and absence of mandatory data retention laws provide a legal framework stronger than most EU alternatives.

Part of the Proton ecosystem trusted by over 100 million users worldwide, from journalists and activists to enterprises requiring sovereign data storage.

vBoxx gives businesses a European home for their files, email and servers, run from ISO 27001 certified datacentres in the Netherlands and Germany. Its new vBoxxCloud workspace brings storage, sync, sharing and document collaboration together in one place, aimed squarely at teams leaving Dropbox, Google Drive or OneDrive.

vBoxxCloud stores files in encrypted vaults with versioning and team folders, syncs them across devices and lets colleagues co-edit with comments, versions and approvals. Around that core, vBoxx sells vBoxxFiles for secure file sharing, the vBoxxVault password manager, hosted email, Microsoft 365 and Google Workspace backup, cloud VPS and managed Nextcloud, ownCloud and OpenCloud hosting.

Key benefits:

• Team storage and sync with versioning, team folders and selective sync
• Live co-editing with comments, version history and approvals
• Secure file sharing through vBoxxFiles, separate from the team workspace
• Password vault for storing and sharing company credentials
• Encryption with AES-256 at rest, TLS 1.3 in transit and per-tenant keys
• Backups for Microsoft 365, Google Workspace and company devices
• Hosting options from cloud VPS to managed Nextcloud and ownCloud

vBoxx B.V. is headquartered in The Hague, Netherlands, and has operated since 2012. The company is ISO 27001 certified by TUV NORD. vBoxxCloud runs primarily from Maincubes Amsterdam and Greenhouse Datacenters in Naaldwijk, with disaster recovery in Frankfurt, and vBoxx states that every subprocessor is EU-located and GDPR-bound.

vBoxxCloud is currently in an invite-only beta, adding e-signing, chat, video meetings and an AI assistant to the workspace. Ideal for Dutch and European SMEs that want their documents out of US clouds without giving up everyday collaboration.