OwnBackup - OwnBackup provides automated backups of SaaS and PaaS data and restore tools for disaster recovery.
imapsync - Console-based utility for migrating IMAP mailboxes.
SolarWinds Backup - Modern server backup software
OfflineIMAP - OfflineImap synchronizes email between an IMAP server and a MailDir or between two IMAP servers.
Spanning Backup for Salesforce - Spanning Backup for Salesforce is the backup and restore solution delivered directly within the Salesforce interface.
iSync - iSync is a software application published by Apple Inc.