Online Vault Backup - Online Vault Backup is a cloud storage service that allows you backup your data while having unlimited storage.
Retrospect - Retrospect Backup: Data Protection for Small Businesses. Windows, Mac, Linux, VMware, Hyper-V, Exchange, SQL, and Email. Servers and endpoints. Try for free for 45 days.
WholesaleBackup - WholesaleBackup is an online data backup service provider that turns your system into a backup server, allowing you to host the backup data on your own Windows Server environment.
Bacula Enterprise - A physical, virtual and cloud data center backup software for data centers. Bacula Enterprise Edition is the best open source backup software.
Rebel Backup - Rebel Backup lets you make encrypted backups of your important files to Dropbox or Google Drive.
Duplicati - Free backup software to store backups online with strong encryption. Works with FTP, SSH, WebDAV, OneDrive, Amazon S3, Google Drive and many others.