imapsync - Console-based utility for migrating IMAP mailboxes.
Demografy - Demografy is a SaaS platform that uses AI to predict customer demographics from names. It provides full coverage, accuracy estimate before purchase and work with even masked names enabling privacy and GDPR-compliance.
MailStore - MailStore Home - A 100% free single-private-user desktop solution
Pipl - The most comprehensive people search. Pipl is the place to find the person behind the email address, social username or phone number.
Fetchmail - The Fetchmail Project
DeviceAtlas - DeviceAtlas offers device detection for mobile and connected devices.