Softaken Yahoo Backup - Softaken Yahoo Backup Tool to export emails of Yahoo Mail to PST, EML, & MBOX
imapsync - Console-based utility for migrating IMAP mailboxes.
MigrateCloudData Yahoo Backup Tool - Yahoo Backup Tool allow users to backup and download Yahoo emails to hard drive into various file formats and popular email clients along with attachments.
MailStore - MailStore Home - A 100% free single-private-user desktop solution
ShDataRescue Hotmail backup Tool - Smart Hotmail Backup utility to save & download Hotmail mailbox emails to desktop. Hotmail email backup tool allows you to backup Hotmail items to PST, MBOX, Gmail, PDF, Yahoo, etc.
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.