imapsync - Console-based utility for migrating IMAP mailboxes.
IMAP Upload - IMAP Upload is a tool for uploading a local mbox file to IMAP4 server.
MailStore - MailStore Home - A 100% free single-private-user desktop solution
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.
Fetchmail - The Fetchmail Project
MigrationWiz - MigrationWiz provides on-demand mailbox migration services through a fully automated cloud-based...