Amazon S3 - Amazon S3 is an object storage where users can store data from their business on a safe, cloud-based platform. Amazon S3 operates in 54 availability zones within 18 graphic regions and 1 local region.
ExaVault - ExaVault is your Secure Cloud FTP platform -- trusted by over 5,000 companies from Adobe to Zillow. Instant setup for manual and automated transfers with a full web interface and direct FTP, FTPS and SFTP support.
Google Cloud Storage - Google Cloud Storage offers developers and IT organizations durable and highly available object storage.
SmartFile - Secure file sharing & FTP hosting for the enterprise.
Wasabi - Storage made simple. Faster than Amazon's S3. Less expensive than Glacier.
FTP Today - FTP Today offers private and secure file transfer/sharing via a hosted Software-as-a-Service model.