Whether you seek a fast and intuitive plug-and-play backup solution or you want to adjust and tweak every last detail of your upload, Crashplan strikes the perfect balance between simplicity and control.
ZipCloud offers a solid cross-platform cloud backup solution with great mobile apps, but poor security and hidden paid add-ons spoil what could be a great product. Nonetheless, the service seems to be trying to push past its disreputable past.
IBackup is a utilitarian cloud backup service aimed at small businesses with top-notch security and a suite of useful add-ons. It comes with a high price tag, though. Individuals should probably take a look into its sister service, IDrive.
SugarSync might be the most polished and intuitive backup and sync service out there for individuals, but it comes with a high price tag. All other online backup providers aspire to look this good. It lacks the security necessary for business purposes, however.