Online Vault Backup - Online Vault Backup is a cloud storage service that allows you backup your data while having unlimited storage.

Restic - Easy: Doing backups should be a frictionless process, otherwise you are tempted to skip it.

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.

myDataSync - MyDataSync provides enterprise data backup and recovery solutions, is powered by Asigra , which is a global leader in backup technology.

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.