Network_Monitoring https://www.opennms.org/en https://www.nagios.org/ https://www.zenoss.com/ https://www.zabbix.com/ https://prometheus.io/ http://pandorafms.org/ https://icinga.com/ http://www.observium.org/ https://www.spiceworks.com/ https://mmonit.com/monit/ https://www.librenms.org/ https://www.cacti.net/index.php Reference https://en.wikipedia.org/wiki/Network_monitoring