I want to know about Network Monitoring tools? Which are best in Industy.?

I want to know about Network Monitoring tools? Which are best in Industry.?

SolarWind is one of the monitoring tools.

I known of PRTG, WhatsUP gold, Logic, Nagios, ManageEngine
Zabbix and Nagios are free, time consuming in configuration, and maintanence other than that they are good.

Observium is good one. If device goes down we can get telegram msg.

Thousand Eyes, Science Logic, Riverbed are best tools which i have seen so far and mostly used in Enterprise Networks.

NMS is one of the monitoring tools.