Free Windows, Mac and Linux Online Backup, Online Sync, Share & Storage from SpiderOak.com

SpiderOak provides an easy, secure and consolidated free online backup, sync, sharing, access & storage solution for Windows, MacOSX, and Linux (Ubuntu, Debian, Fedora & openSUSE)

Access all your data in one de-duplicated location
Configurable multi-platform synchronization
Preserve all historical versions & deleted files
Share folders instantly in web ShareRooms w / RSS
Retrieve files from any internet-connected device
Comprehensive ‘zero-knowledge’ data encryption
2 GBs Free / $10 per 100 GBs / Unlimited devices