CrashPlan - CrashPlan for Small Business backup software offers the best way to back up and store business & enterprise data securely - offsite, onsite & online in the Cloud.
Backblaze - Backblaze's remote backup automatically backs up your data to our secure datacenter.
SpiderOak - SpiderOak makes it possible for you to privately store, sync, share & access your data from everywhere.
Duplicati - Free backup software to store backups online with strong encryption. Works with FTP, SSH, WebDAV, OneDrive, Amazon S3, Google Drive and many others.
Sync.com - Sync. com offers a backup tool and a file sharing service, rolled into one.
SugarSync - SugarSync is a cloud file sharing, file sync and online backup service that is simple, powerful and easy to use. Get a 30 day free trial!