proton.me
Proton Drive is an end-to-end encrypted cloud storage service from Switzerland. It lets users back up files, access them across Windows, macOS, Android, iOS, and web apps, and share files with password protection and expiry dates. It also includes photos and albums with automatic mobile backups and collaborative albums, plus desktop file syncing. Proton Docs and Proton Sheets are described as online document and spreadsheet editors.