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



The best open source alternative to Monit is Nagios. If that doesn't suit you, our users have ranked more than 25 alternatives to Monit and 15 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Monit are Monitorix, HyperDX, Cabot and DeepFlow.
Nagios is a powerful monitoring system licensed under Nagios Enterprises that helps organizations identify and resolve IT infrastructure issues.



Monitorix is a system monitoring tool designed to monitor as many services and system resources as possible. Due to its simplicity and small size it can also be used on embedded devices.




An open source observability platform: Unify session replays, logs, traces, and errors – all without the Datadog price tag.




Cabot is a free, open-source, self-hosted infrastructure monitoring platform that provides some of the best features of PagerDuty, Server Density, Pingdom and Nagios without their cost and complexity.


Unify your cloud-native monitoring with zero-code eBPF, advanced profiling, and 10x storage efficiency.




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.






Easy to use configuration web interface for nagios and neamon. openITCOCKPIT is a perfomant monitoring system with support for distributed monitoring (Satellites), REST API, nice dashboards, maps, graphs and a modular concept for easy customization.




Cacti is a complete frontend to RRDTool, it stores all of the necessary information to create graphs and populate them with data in a MySQL database. The frontend is completely PHP driven. Along with being able to maintain graphs, data sources, and Round Robin archives in a...




Checkmk is a monitoring tool of servers, applications, networks, cloud, containers, storage, databases, IoT and more. Checkmk is available as Raw Edition, which is 100% pure open source, and as Enterprise Edition with a lot of additional features.




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



