Apsona for Salesforce - Apsona for Salesforce is an add-on application for Salesforce to manage the data.
SysTools Office 365 Backup - Instantly backup your Office 365 Mailbox to PST / EML format with SysTools Office 365 Backup & Restore software for MAC and Win.
Regain Office 365 to PST - Export or migrate Office 365 Mailbox to PST, EML, EMLX, MBOX, MSG and vCard format.
Softaken Office 365 Backup - Softaken Office 365 Backup to export Office 365 files to PC
Cloudpond - Cloudpond is an AWS S3 storage connector utility for Salesforce.
imapsync - Console-based utility for migrating IMAP mailboxes.