Private cloud storage
Private cloud storage keeps your files away from advertising, and the best services encrypt them with keys only you hold. For storage you run yourself, see file sync and backup.
1. iCloud Drive Grade B
Apple's cloud storage for files across Apple devices, Windows and the web. Files are end-to-end encrypted only with the optional Advanced Data Protection setting, which is off by default.
Based in the United States (Five Eyes). Score 75/100.
2. Peergos Grade B
Peer-to-peer, end-to-end encrypted file storage and sharing platform with fine-grained access control. Use the hosted peergos.net service or self-host the open source server.
Based in the United Kingdom (Five Eyes). Score 75/100.
3. Proton Drive Grade B
End-to-end encrypted cloud storage from Swiss company Proton, with open-source apps for web, desktop and mobile.
Based in Switzerland. Score 75/100.
4. Filen Grade C
End-to-end encrypted cloud storage from Germany, with open source web, desktop, mobile and CLI clients. Offers a free tier and paid plans.
Based in Germany (Fourteen Eyes). Score 63/100.
5. Dropbox Grade D
Cloud storage and file sync service with desktop, mobile and web apps. Files are encrypted at rest with keys Dropbox holds, not end-to-end.
Based in the United States (Five Eyes). Score 53/100.
6. Koofr Grade D
Cloud storage from Slovenia with web, desktop, mobile, WebDAV and rclone access. Offers optional open source client-side encryption through Koofr Vault and can connect other cloud accounts.
Based in Slovenia. Score 47/100.
7. Google Drive Grade D
Cloud storage and file sharing from Google, integrated with Docs, Sheets and other Google services. Files are encrypted at rest with keys Google holds, not end-to-end.
Based in the United States (Five Eyes). Score 44/100.
8. Microsoft OneDrive Grade D
Cloud storage from Microsoft, built into Windows and Microsoft 365, with desktop, mobile and web apps. Files are encrypted at rest with keys Microsoft holds, not end-to-end.
Based in the United States (Five Eyes). Score 44/100.
9. Tresorit Grade D
End-to-end encrypted cloud storage, file sync and sharing service based in Switzerland, with desktop, mobile and web apps aimed mainly at businesses.
Based in Switzerland. Score 44/100.
10. Infomaniak kDrive Grade D
Cloud storage from Swiss company Infomaniak, hosted in its own data centers in Switzerland, with open-source desktop and mobile apps.
Based in Switzerland. Score 41/100.
11. Internxt Grade D
End-to-end encrypted cloud storage from Spain, with open source web, desktop and mobile clients. Offers a free tier and paid plans.
Based in Spain (Fourteen Eyes). Score 41/100.
12. MEGA Grade F
End-to-end encrypted cloud storage and file sharing service with desktop, mobile and web apps and source-available clients.
Based in Hungary. Score 38/100.
13. Sync.com Grade F
End-to-end encrypted cloud storage and file sharing from Canada, with desktop, mobile and web apps.
Based in Canada (Five Eyes). Score 38/100.
14. Box Grade F
Cloud content management and file sharing service for businesses and individuals, with desktop, mobile and web apps. Files are encrypted at rest with keys Box holds, not end-to-end.
Based in the United States (Five Eyes). Score 34/100.
15. pCloud Grade F
Cloud storage from Switzerland with desktop, mobile and web apps. Client-side encryption covers only a separate encrypted folder that needs the paid pCloud Encryption add-on.
Based in Switzerland. Score 25/100.
16. Icedrive Grade F
Cloud storage service with desktop, mobile and web apps, a free tier, and optional client-side encryption of a private folder on paid plans.
Based in Gibraltar. Score 19/100.
How this list is made
Entries are ranked with our picks first, then by score against public criteria. Every answer links to evidence, and hosted services are tested automatically. The list updates when ratings change.
Compare all: encrypted cloud storage. Criteria and scoring.
Questions
Is Google Drive private?
Google Drive does not use file contents for ads, but files are not end-to-end encrypted by default and Google can access them. See Google Drive alternatives.