iCloud - iCloud is cloud service done right. It stores your music, photos, apps, calendars, documents, and more. And wirelessly pushes them to all your devices.

Sync.com - Sync. com offers a backup tool and a file sharing service, rolled into one.

Tutanota - Get your encrypted mailbox for free.

Zoho WorkDrive - File storage & content collaboration tool for modern teams

Google Drive - Access and sync your files anywhere

Yandex.Disk - Files on Yandex.Disk won't get lost if your phone or computer breaks.