Cacti is a network graphing solution designed to harness the power of RRDTool's data storage and graphing functionality.

LibreNMS is an auto-discovering PHP/MySQL-based network monitoring system.

Monit is a free, open source process supervision tool for Unix and Linux.

Observium is a low-maintenance auto-discovering network monitoring platform supporting a wide range of device types, platforms and operating systems, etc.

PRTG is a network monitoring tool that helps you to ensure that your computer systems are running smoothly and that no outages occur.

Datadog is a monitoring service for cloud-scale applications, bringing together data from servers, databases, tools, and services to present a unified view of…

Mindarray is a network monitoring software which includes BSM, SLA with real time monitoring & analytics.

Nagios known as Nagios Core, is a free and open source computer-software application that monitors systems, networks and infrastructure.

Pulseway is a mobile-first IT management software.

Zabbix is enterprise open source monitoring software for networks and applications.