Google Cloud Filestore - Fully-managed cloud file storage
BoxCryptor - Boxcryptor encrypts your sensitive files before uploading them to cloud storage services like Dropbox, Google Drive, Microsoft OneDrive, Box, and many others.
Azure File Storage - Try Azure File Storage for managed file shares that use standard SMB 3.0 protocol. Share data with on-premises and cloud servers, integrate with apps, and more.
Mega - Secure File Storage and collaboration
Igloo Software - Igloo is a modern intranet, it connects people with the information they need to do their best work.
Google Drive - Access and sync your files anywhere