Bitcasa

Bitcasa is the personal app that integrates infinite storage, sync, backup, and share into your desktop and across all your devices.
Store everything you own
With Bitcasa, you can store all your data, including entire external drives, and never have to worry about storage again.
Bitcasa is safe
Bitcasa encrypts your data before storing it in cloud.

You can now safely store all your memories without ever having to worry about them getting into the wrong hands.
Access from anywhere
Once you've stored your data in Bitcasa, you can access it from any device. Your data is intelligently streamed from the cloud and does not take up any space on your device.
Bitcasa provides 5 GB free storage. Larger capacities are available, and pricing plans can be found here.