We do not reviewed this type of software here. We found that all the proprietary software and services are useful and reasonably priced, but in every case the software needs to evolve. The services we reviewed include XactLab Corp.'s Atrieva, Connected Corp.'s Connected Online Backup, and Surefind Information's Surefind. We also reviewed NetBack, which offers some unique capabilities and doesn't require proprietary software. We found that software for generic Internet backup, as a group, is more powerful and usable than proprietary software.
Internet backup remains an emerging area, so there are many differences in approach and quality.
Before you invest your time and money, make sure you pick the right combination of service and software.