The best open source alternative to Zabbix is Nagios. If that doesn't suit you, our users have ranked more than 100 alternatives to Zabbix and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Zabbix are Beszel, LibreNMS, Icinga and HyperDX.
Nagios is a powerful monitoring system licensed under Nagios Enterprises that helps organizations identify and resolve IT infrastructure issues.
Most users think Nagios is a great Zabbix alternative.
Nagios is the most popular Open Source alternative to Zabbix.
Beszel is a lightweight server monitoring platform that includes Docker statistics, historical data, and alert functions.
LibreNMS is an autodiscovering PHP/MySQL based network monitoring system forked from Observium. LibreNMS aims to be easy to use, painless to deploy, and support monitoring of a wide range of devices. Observium's license changed to a modified QPL license in May 2012, and...
LibreNMS has a much better license model and does a comprehensive job of monitoring the network with little configuration.
Almost everyone thinks LibreNMS is a great Zabbix alternative.
Icinga is a fork of Nagios and is backward compatible. So, Nagios configurations, plugins and addons can all be used with Icinga. Though Icinga retains all the existing features of its predecessor, it builds on them to add many long awaited patches and features requested by the...
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.
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...
Enterprise-ready monitoring solution that provides unparalleled flexibility for IT to address both immediate and unforeseen operational issues, including infrastructure and IT processes.
More features and more scalable
The Community edition already provides official Netflow and Oracle monitoring plugins for free
Monitor your Laravel applications with precision. Enhance performance and reliability with error tracking, comprehensive logs, and deep insights tailored specifically for Laravel.
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.
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.
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You have to pay, the open source edition is really poor