Tresorit

Tresorit is the cloud storage platform you choose when privacy and compliance are non-negotiable requirements rather than marketing checkboxes. After testing it alongside mainstream alternatives, the difference in security architecture is fundamental: while Dropbox and Google Drive encrypt your files on their servers (meaning they hold the keys and can access your data), Tresorit uses true end-to-end encryption where only you possess the decryption keys. Not even Tresorit employees can read your files.

This zero-knowledge architecture makes Tresorit the clear choice for regulated industries. Law firms handling privileged client communications, healthcare organizations subject to HIPAA, financial services firms with compliance obligations, and any business processing sensitive personal data under GDPR get genuine data sovereignty, not just a compliance checkbox. The Swiss incorporation adds legal protection through some of the world's strongest privacy laws, and the audit logs and access controls provide the documentation that compliance audits require.

The secure file sharing features go beyond what mainstream platforms offer. You can set expiration dates on shared links, limit download counts, add watermarks to shared documents (tracking who leaks what), restrict access by email domain, and remotely wipe shared content. These granular controls are essential for businesses that share sensitive documents externally with clients, partners, or opposing counsel.

The trade-offs for this security level are real. Pricing starts at around $14/user/month for business plans, which is 3-4x the cost of standard cloud storage. Collaboration features are functional but basic compared to Google Workspace's real-time co-editing. Sync performance is noticeably slower due to the encryption overhead, particularly for large files. And the storage limits on entry-level plans feel restrictive compared to what Dropbox or OneDrive offer.

The desktop and mobile apps are well-designed and integrate with Windows Explorer and macOS Finder for familiar file management. The Outlook integration enables encrypted email attachments, which is valuable for businesses that frequently share sensitive documents via email.

The bottom line: Tresorit is the best choice for businesses where data privacy is a legal or ethical requirement. The premium pricing is justified if you handle sensitive client data, operate in regulated industries, or need GDPR-grade data protection. For general business file storage without strict compliance needs, mainstream alternatives offer better value and collaboration features.