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
Macrium Reflect - Macrium Software - the creators of Macrium Reflect backup, imaging and cloning software.
Gmvault - Backup the emails in your Gmail account.
AOMEI Backupper - AOMEI Backupper is a software created to help a person backup, restore, clone, and sync their entire Windows system.
MailSteward - MailSteward : The Ultimate E-mail Manager for Mac OS X