As a Crashplan user, I see it as only slightly related. Crashplan is a backup solution, with multiple versions available for restoration. These are stored in a

As a Crashplan user, I see it as only slightly related. Crashplan is a backup solution, with multiple versions available for restoration. These are stored in a compressed and optionally encrypted blob of folders and files with restoration controlled by Crashplan's GUI. BitTorrent's Sync application appears to be a way to keep the current version of files syncronized on multiple computers without a cloud (server) intermediary and without a history of previous versions.