imapsync - Console-based utility for migrating IMAP mailboxes.
Mover - Mover is a platform for moving files, streamlines the process of transferring users' data to the cloud.
IMAP Upload - IMAP Upload is a tool for uploading a local mbox file to IMAP4 server.
WANdisco Fusion Platform - WANdisco Fusion is a data replication product for Hadoop.
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.
ShareGate Desktop - Cloud Migration