Backblaze is an online backup tool that allows Windows and Mac OS X users to back up their data to an offsite data center.

Backup Bouncer" - and it's free, of course - "is here to help keep the ugly backup tools out of the club.

Jungle Disk is an online backup tool that stores its data in Amazon S3 or Rackspace Cloud Files.

Backup schedules are usually supported to reduce maintenance of the backup tool and increase the reliability of the backups.

Accordingly, there has been advocacy for a reliable, combined, tool technique such as a cordless screwdriver with backup cutting tool.

SpiderOak is an online backup tool to back up, share, sync, access and store data using an off-site server.

No backup tool, she thought.

ElephantDrive is a storage virtualization service used primarily as an online backup tool, but also as a remote access service/collaboration tool.

Zmanda also sells a closed source backup product - Zmanda Cloud Backup which is an online backup tool.