Jungle Disk is an affordable Online Backup solution, with an aggressive price point and the offer of free storage, hosted via the Amazon Cloud (US/EU) or Rackspace your clients data is encrypted with AES-256 encryption allow it to be used for corporate and government backups.
The platform allows you to hook you backup space as a local drive on your computer, it can also be used as a file storage to store and transfer files around the business.