Gmvault - Backup the emails in your Gmail account.
MailStore - MailStore Home - A 100% free single-private-user desktop solution
Datto Backupify - Protect your business with backup.
PST to Office 365 Wizard - Outlook PST to Office 365 files converter tool supports multiple formats conversion.
Conholdate.Total for .NET - Conholdate.Total for .NET is a powerful suite of .NET APIs that gives software developers the ability to create, manipulate, convert, compare & view Word, Excel, PowerPoint, Outlook, Photoshop, AutoCAD, OpenOffice & more than 100 file formats.
Beyond Inbox - Beyond Inbox, backup tool to backup, copy, move and restore email messages of your IMAP account...