SpiderOak alternatives

SpiderOak
Online file storage that aggressively deduplicates data, allowing to save everything you upload, including all versions. They provide nice clients for Mac, Linux, and Windows. And they’re cryptographically secure from the moment your data leaves your computer - unless you hand over your password, even the folks who work at SpiderOak can’t see your data.
SpiderOak alternatives are:
DropBox, Box, SugarSync, Mozy, Jungle Disk, Wuala