This document discusses various network management system (NMS) tools. It describes Zabbix Lab as an open-source monitoring platform ideal for learning Zabbix or building simple monitoring setups due to its limited features. Nagios is described as an open-source or commercial monitoring platform suitable for small to medium businesses needing comprehensive monitoring solutions. Google Cloud Network Monitoring is presented as a cloud-based monitoring service from Google Cloud Platform for monitoring GCP resources. Terraform is characterized as an infrastructure as code tool ideal for automating infrastructure management across platforms through its declarative configuration language and multi-cloud support.