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.

Duplicati - Free backup software to store backups online with strong encryption. Works with FTP, SSH, WebDAV, OneDrive, Amazon S3, Google Drive and many others.

Rebel Backup - Rebel Backup lets you make encrypted backups of your important files to Dropbox or Google Drive.

rsync - rsync is a file transfer program for Unix systems. rsync uses the "rsync algorithm" which provides a very fast method for bringing remote files into sync.

Data Deposit Box - Backup all of your PCs, Macs and Mobile devices into ONE account.

GoodSync - GoodSync provides highly reliable file backup and synchronization for both individuals and businesses.