Prometheus - An open-source systems monitoring and alerting toolkit.
Acronis Backup and Recovery - Acronis Backup is a data recovery solution that offers more ways of storing and recovering drives, folders and files as compared to other similar solutions.
Nagios - Complete monitoring and alerting for servers, switches, applications, and services
SolarWinds Backup - Modern server backup software
StatsD - Simple daemon for easy stats aggregation.
MSP360 - MSP360 (CloudBerry) Backup is a platform that comes with a managed backup service and delivers data protection to users.