imapsync - Console-based utility for migrating IMAP mailboxes.
OwnBackup - OwnBackup provides automated backups of SaaS and PaaS data and restore tools for disaster recovery.
MailStore - MailStore Home - A 100% free single-private-user desktop solution
SolarWinds Backup - Modern server backup software
MigrationWiz - MigrationWiz provides on-demand mailbox migration services through a fully automated cloud-based...
Datto Backupify - Protect your business with backup.