Open Source Nagios Alternatives

Nagios is a monitoring system that helps organizations identify and resolve IT infrastructure issues. If you need to monitor a complex web of services internally, this is a hugely helpful tool that can save a huge amount of time in identifying and resolving potential problems.

Nagios is free and available on Linux, but it is not open source. This is especially important to consider when dealing with highly confidential and sensitive infrastructure. In this case, the added transparency and potential for modularity that open source Nagios alternatives can provide could very well be preferred.

The list of alternatives was last updated: 6/3/2020 8:51:00 AM

Alternatives to Nagios for all platforms with Open Source License

  • Zabbix

    An uncompromising mature enterprise-level platform designed for real-time monitoring of millions of metrics collected from tens of thousands of servers, virtual machines and network devices, effortlessly scaling to even larger environments. Gather and analyze accurate statistics and performance metrics, visualize it, get notified about current and potential issues without delay, and take advantage of our time-tested professional development and support.

    • Innovative UI and complex functions. Guest • May 2018 • 1 agrees and 2 disagrees Disagree   Agree

    Free Open Source Linux Self-Hosted FreeBSD OpenBSD

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  • Netdata

    Netdata democratizes monitoring, empowering IT teams to know more about their infrastructure, enabling them to quickly identify and troubleshoot issues, collaborate to solve problems and make data-driven decisions to move business forward.

    • Super fast monitoring of the system, and also of the monitors the kernel of the system. Guest • Mar 2017 • 2 agrees and 1 disagrees Disagree   Agree

    Free Open Source Mac Linux Web BSD Self-Hosted ... C (programming language) Python JavaScript Node.JS Bash

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  • Icinga

    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 user community.

    Freemium Open Source Mac Linux

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  • LibreNMS

    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 recently was split into free and commercial versions. Our aim with LibreNMS is to continue to create a usable NMS, but with a community focus and GPL licensing.

    • Best open source tool that I've tried! Easy to install, manage and low support. Guest • Apr 2019 Disagree   Agree
    • So easy to setup, very powerful, and can use the Nagios plugins. Teke2Mar 2018 Disagree   Agree

    Free Open Source Linux BSD MySQL Community Edition Apache HTTP Server JavaScript ... PHP

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  • Cockpit Project

    Cockpit makes it easy to administer your GNU/Linux servers via a web browser. Easy to use Cockpit is perfect for new sysadmins, allowing them to easily perform simple tasks such as storage administration, inspecting journals and starting and stopping services. No interference Jumping between the terminal and the web tool is no problem. A service started via Cockpit can be stopped via the terminal.

    Free Open Source Linux

    Cockpit Project icon
  • Cacti

    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 database, cacti handles the data gathering. There is also SNMP support for those used to creating traffic graphs with MRTG.

    Free Open Source Windows Linux

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  • Munin

    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. In Norse mythology Hugin and Munin are the ravens of the god king Odin. They flew all over Midgard for him, seeing and remembering, and later telling him. "Munin" means "memory".

    Free Open Source Linux

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  • PHP Server Monitor

    PHP Server Monitor is a script that checks whether your websites and servers are up and running. It comes with a web based user interface where you can manage your services and websites, and you can manage users for each server with a mobile number and email address. * Monitor services and websites (see below). * Email, SMS and Pushover.net notifications. * View history graphs of uptime and latency. * User authentication with 2 levels (administrator and regular user).

    Free Open Source Windows Linux BSD Self-Hosted PHP

    PHP Server Monitor icon
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  • Cabot

    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.

    Free Open Source Self-Hosted

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