GoodSync - GoodSync provides highly reliable file backup and synchronization for both individuals and businesses.
Acronis Cyber Protect Home Office - (Formerly Acronis True Image) Complete protection for your digital life
FreeFileSync - FreeFileSync is a free open source data backup software that helps you synchronize files and folders on Windows, Linux and macOS.
Duplicati - Free backup software to store backups online with strong encryption. Works with FTP, SSH, WebDAV, OneDrive, Amazon S3, Google Drive and many others.
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.
Clonezilla - Clonezilla is a suite of software that's designed to allow you to back-up and image new hard drives with your data.