Sync.com

Sync.com stands as the most compliant encrypted storage for regulated industries, with zero-knowledge encryption and HIPAA/GDPR certification. For $8 per month, you get 2TB — 20% cheaper than the runner-up in encrypted storage and half the price of Proton Drive’s per-gigabyte cost. Its secure file sharing with expiration dates and password protection outpaces #5 Proton Drive’s sharing feature set, although upload speeds trail the average competitor by 15%. An independent penetration test in 2025 confirmed zero data leaks, making it a top pick for compliance-heavy workflows.