imapsync - Console-based utility for migrating IMAP mailboxes.
Eligible - Payment Infrastructure for Healthcare. Eligible is a software suite that increases yield while decreasing cost to collect.
MailStore - MailStore Home - A 100% free single-private-user desktop solution
DigitalDataManager - DigitalDataManager enables users to collect customer data and behavioral events with an API.
Fetchmail - The Fetchmail Project
Peekdata - Peekdata is a Schema-less, Rest based Data API Gateway to get Data from Multiple Data Sources