Acronis Cyber Protect Home Office - (Formerly Acronis True Image) Complete protection for your digital life
imapsync - Console-based utility for migrating IMAP mailboxes.
Duplicati - Free backup software to store backups online with strong encryption. Works with FTP, SSH, WebDAV, OneDrive, Amazon S3, Google Drive and many others.
audriga Email and Groupware migration - Easily migrate your email, contacts, calendar items and tasks to your new provider or server. No software installation is required.
Clonezilla - Clonezilla is a suite of software that's designed to allow you to back-up and image new hard drives with your data.
MailStore - MailStore Home - A 100% free single-private-user desktop solution