Compare software

DropboxProton Drive
Freemium

A small free tier is available. More storage and features require a paid plan.

 Freemium

A free account is available, with paid plans for more storage and a separate business…

Windows, macOS, Linux, Android, iOS, Web Android, iOS, Web
  • The most mature and reliable sync engine, with clients everywhere
  • Smart sync keeps large libraries usable on small disks
  • End-to-end encryption that the provider cannot read
  • Automatic photo and video backup from mobile
  • The free tier is only a few gigabytes and caps linked devices
  • Files are stored unencrypted from the provider's point of view
  • Requires a Proton account
  • Free tier storage is limited
Downloadable app, Hosted service Downloadable app, Web application, Hosted service
Closed source Closed source
License not stated License not stated
Account needed Account needed
Not stated if it works offline Not stated if it works offline

Checked September 22, 2026

Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.