MailStore - MailStore Home - A 100% free single-private-user desktop solution
Vaultastic - Vaultastic’s on-demand SaaS platform provides Protection, Visibility & Control for your Critical Business Data with Agile Cloud Archival.
imapsync - Console-based utility for migrating IMAP mailboxes.
MailBakup - Mailbakup is an all-in-one IT solution that provides an in-demand set of e-mail backup solution to save valuable data from the web-based email account to location derive easily and quickly.
MozBackup - Backup tool for Firefox and Thunderbird
MailArchiva - MailArchiva is an email archiving, email compliance, and e-Discovery enterprise server.