> Are there any free software packages that
> provide functionality like DropBox or GoogleDrive?
> Are there any companies that sell the utility
> service of hosting that software, with
> freedom-respecting terms of service and security
> features such as optional encryption of stored
> data?
I know some people at MIT were working on such a thing, based on SUNDR (paper attached), but I'm far enough out of touch that I couldn't tell you if it was going to go anywhere. That group is pro-free-software, but when I last heard, they were primarily concerned with the (frankly terrible) security implications of DropBox, Box.net, MS SkyDrive, et al.