Online Vault Backup - Online Vault Backup is a cloud storage service that allows you backup your data while having unlimited storage.
Yandex.Disk - Files on Yandex.Disk won't get lost if your phone or computer breaks.
Rebel Backup - Rebel Backup lets you make encrypted backups of your important files to Dropbox or Google Drive.
CloudBerry Box - CloudBerry Box provides bi-directional synchronization of data across remote computers.
Duplicati - Free backup software to store backups online with strong encryption. Works with FTP, SSH, WebDAV, OneDrive, Amazon S3, Google Drive and many others.
Cloudu - Secure German online storage and file sync service. Apps for all major platforms.