Duplicati - Free backup software to store backups online with strong encryption. Works with FTP, SSH, WebDAV, OneDrive, Amazon S3, Google Drive and many others.
Acronis Cyber Protect Home Office - (Formerly Acronis True Image) Complete protection for your digital life
Restic - Easy: Doing backups should be a frictionless process, otherwise you are tempted to skip it.
Arcserve UDP - Arcserve UDP is data backup & recovery software that deals with unified data protection solutions, making you protect your computer system by creating data stores on the recovery point server.
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.
SolarWinds Backup - Modern server backup software