Nagios is a powerful monitoring system licensed under Nagios Enterprises that helps organizations identify and resolve IT infrastructure issues.



Xymon is described as 'Tool for monitoring servers, applications and networks. It collects information about the health of your computers, the applications running on them, and the network connectivity between them' and is a Network Monitor in the network & admin category. There are more than 10 alternatives to Xymon for a variety of platforms, including Linux, Web-based, Windows, Mac and Android apps. The best Xymon alternative is Nagios, which is both free and Open Source. Other great apps like Xymon are Datadog, NetXMS, Munin and OpenNMS Horizon.
Nagios is a powerful monitoring system licensed under Nagios Enterprises that helps organizations identify and resolve IT infrastructure issues.



Monitor and visualize your IT and DevOps environments seamlessly with over 120 integrations, enabling real-time insight across on-premise and cloud deployments. Utilize robust analytics, graphing, and correlation tools for error logging and network monitoring. Improve collaboration and proactive IT management.




NetXMS is an enterprise grade multi-platform open source network management and monitoring system. It provides comprehensive event management, performance monitoring, alerting, reporting and graphing for all layers of IT infrastructure — from network devices to business...




Munin is a networked resource monitoring tool that can help analyze resource trends and "what just happened to kill our performance?" problems. It is designed to be very plug and play. A default installation provides a lot of graphs with almost no work.


OpenNMS is an open-source network monitoring platform that helps you visualize and monitor everything on your local and distributed networks.




Open source observability platform. SigNoz helps developers find issues in their deployed applications & solve them quickly.




The automated IT performance monitoring platform that enables companies to easily and cost-effectively monitor their entire IT infrastructure stack.
Trafikito is free Linux servers monitoring solution which by default checks RAM, disk space, CPU and sends you an email if something is wrong.




Our open and flexible server and network monitoring solution delivers a unified view of your entire IT environment. Monitor up to 100,000 devices from a single server, with distributed and redundant solutions for nearly infinite scalability.




Monitor applications, infrastructure, and servers in one platform. Out-of-the-box dashboards. Metrics. Analytics. Starting at $7.50/month. Free 14-day trial.
CloudMonix provides advanced cloud monitoring and automation for applications and services deployed on the Microsoft Azure and AWS platforms and built with MSPs, CSPs and DevOps in mind.
