From Conformal Systems:
Cyphertite (32-bit) is your encrypted cloud backup partner, from the individual user to enterprise level companies. It offers 3 types of data plans. A Free Basic account that allows 8 GB of free high security online storage, a Personal account where you pay $10.00 per month for unlimited storage and a Premium account that offers Pay-by-Usage pricing at the rate of $0.10 per GB every month and is ideal for business users. Cyphertite's core code is openly available online, meaning its actions can be independently verified and improved by other participating developers. Open source code allows others to actually verify we encrypt your data as claimed.