Allmydata.com – Unlimited storage and automated backup for $4.99 a month.
Angelbackup.com – Prices as low as $1.95 for 2GB of automated backup.
BlogBackupOnline.com – Automatically backs up your blog for you with up to 50MB of storage.
Carbonite.com – Backup your entire hard drive automatically, no free version.
CrashPlan.com – Automated backup plans as low as a one-time $20 fee, unlimited space.
Datapreserve.com – Automated, managed off-site remote backups, focusing on businesses.
Egnyte.com – Backup your files, store them securely, export them back to your computer in a crash. Share with co-workers for collaborative work.
ElephantDrive.com – 1GB of free storage, automated backups; up to 1TB in subscription form.
File123.com – 1GB of space for free, up to 10GB of backup for as low as $4.95 a month.
gDisk – Turn your Gmail account in to an online storage space for free.
GoDaddy.com – All paid plans, as low as $5.99 a year for 50MB, sync between multiple computers.
IBackup – Anywhere from 5GB to 300GB of storage, no free services.
iOmega iStorage – Automated backups for personal or business users, file sharing available.
Ironmountain.com – Focusing on professional backup solutions from small business up to government agencies.
MediaMaster.com – Unlimited storage of your music collection.
Mozy.com – Automated online backup of your selected files with versioning.
Mp3Tunes.com – Unlimited free storage of your music collection, streaming play of the songs from anywhere.
