MailStore - MailStore Home - A 100% free single-private-user desktop solution
Zerto - Virtual replication & recovery solution
Gmvault - Backup the emails in your Gmail account.
Druva inSync - Your device may be lost, but your data isn’t with Druva inSync™ Integrated backup, eDiscovery and compliance monitoring.
SysTools Gmail Backup - Backup Gmail Emails, Contacts, Calendar, and Google Drive Storage File by SysTools Gmail Backup Solution
Arcserve UDP - Arcserve UDP is data backup & recovery software that deals with unified data protection solutions, making you protect your computer system by creating data stores on the recovery point server.