MailStore - MailStore Home - A 100% free single-private-user desktop solution
Acronis Cyber Protect Home Office - (Formerly Acronis True Image) Complete protection for your digital life
Gmvault - Backup the emails in your Gmail account.
HDclone - HDClone by Miray Software is the universal tool for cloning disks and other mass storage media fast and easily. To be used for backups, data recovery, system migration and professional duplication of several disks at a time.
Mail Backup X - Your one stop mail backup and archiving tool for Mac.
Clonezilla - Clonezilla is a suite of software that's designed to allow you to back-up and image new hard drives with your data.