Dropbox - Online Sync and File Sharing
N2WS Cloud Protection Manager - N2WS is the leading Enterprise-class disaster recovery, and backup solution specifically made for Amazon EC2 servers.
Google Drive - Access and sync your files anywhere
Bacula Enterprise - A physical, virtual and cloud data center backup software for data centers. Bacula Enterprise Edition is the best open source backup software.
Mega - Secure File Storage and collaboration
Nuabee DRaaS - Nuabee DRaaS is an online file backup software that helps your IT business protect your important files and documents across all data centers.