BoxCryptor - Boxcryptor encrypts your sensitive files before uploading them to cloud storage services like Dropbox, Google Drive, Microsoft OneDrive, Box, and many others.
CloudMe - Key Features: - Access to all your files and folders in CloudMe. - From 3GB (free) to 500 GB (paid) of file storage, accessible directly in your device. - View photos, videos, and documents wherever you are.
Mega - Secure File Storage and collaboration
eyeOS - eyeOS is a web desktop following the cloud computing concept that seeks to enable collaboration and communication among users.
Google Drive - Access and sync your files anywhere
Doky - Doky is the Cloud Operating System Web 3.0 based on open-source .