OwnBackup - OwnBackup provides automated backups of SaaS and PaaS data and restore tools for disaster recovery.
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.
SolarWinds Backup - Modern server backup software
Softaken Office 365 Backup - Softaken Office 365 Backup to export Office 365 files to PC
Spanning Backup for Salesforce - Spanning Backup for Salesforce is the backup and restore solution delivered directly within the Salesforce interface.
Regain Office 365 to PST - Export or migrate Office 365 Mailbox to PST, EML, EMLX, MBOX, MSG and vCard format.