Carbonite - Unlimited online backup for one flat fee. Free trial, no credit card required.
Duplicati - Free backup software to store backups online with strong encryption. Works with FTP, SSH, WebDAV, OneDrive, Amazon S3, Google Drive and many others.
Backblaze - Backblaze's remote backup automatically backs up your data to our secure datacenter.
Online Vault Backup - Online Vault Backup is a cloud storage service that allows you backup your data while having unlimited storage.
Code42 - Code42 is a SaaS solution for enterprises that secures all user data on one secure platform, leaving you and your business secure in the knowledge that both your employee's and customer's data is protected. Read more about Code42.
Rebel Backup - Rebel Backup lets you make encrypted backups of your important files to Dropbox or Google Drive.