MailStore - MailStore Home - A 100% free single-private-user desktop solution
ZOOK MBOX to PST Converter - ZOOK Software offers MBOX to PST converter to import MBOX data to Outlook.
MozBackup - Backup tool for Firefox and Thunderbird
ReliefJet Essentials for Outlook - A large set of useful and easy-to-use tools for every Microsoft Outlook user: Import, export and convert using EML,MSG,TXT and PST formats; remove duplicate items, process attachments and extract addresses; get reports and statistics and even more...
imapsync - Console-based utility for migrating IMAP mailboxes.
ZOOK OST to PST Converter - ZOOK offers the tool to convert OST to PST format to import OST file to Outlook.