Open Source Nagios AlternativesTop Network Monitors and other similar apps like Nagios

The best open source alternative to Nagios is Zabbix. If that doesn't suit you, our users have ranked more than 100 alternatives to Nagios and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Nagios are Icinga, Cockpit Project, HyperDX and LibreNMS.

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

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Nagios alternatives page was last updated Jun 17, 2025
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  1. Zabbix icon

    Zabbix

     198 likes
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    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.

    110 Zabbix alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • LV flagLatvia
    • European Union flagEU

    Platforms

    • Linux
    • Self-Hosted
    • FreeBSD
    • OpenBSD
    Zabbix screenshot 1

    Properties

    1.  Privacy focused

    Features

    1.  Server Monitoring
    2.  Custom Dashboard
    3.  Hardware Monitoring
    4.  No registration required
    5.  Ad-free
    6.  Portable
    7. Microsoft Azure icon  Azure integration

    Zabbix VS Nagios

     
    Comments about Zabbix as an Alternative to Nagios
    Guest
    Positive May 26, 2018
    -1

    Innovative UI and complex functions.

    Nagios Icon
    Zabbix icon

    • Almost everyone thinks Zabbix is a great Nagios alternative.

    • Zabbix is the most popular Linux & Self-Hosted alternative to Nagios.

    • Zabbix is the most popular Open Source & free alternative to Nagios.

    • Zabbix is Free and Open SourceNagios is Freemium and Open Source
    • Zabbix is Privacy focusedNagios is not according to our users
  2. Icinga icon

    Icinga

     36 likes
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    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...

    57 Icinga alternatives

    License model

    • Freemium • Open Source

    Application type

    Platforms

    • Mac
    • Linux
    Icinga screenshot 1

    Icinga Features

    1.  Hardware Monitoring

    Icinga VS Nagios

     
  4. Cockpit Project icon

    Cockpit Project

     35 likes
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    Makes it easy to administer Linux servers via a web browser. It allows you to easily perform simple tasks like storage administration, inspecting journals, starting & stopping services, monitoring & administering several servers at once.

    27 Cockpit Project alternatives

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Linux
    • Flathub
    Cockpit Project screenshot 1

    Properties

    1.  Lightweight

    Features

    1.  Ad-free
    2.  No registration required
    3.  Server Monitoring
    4.  Configuration
    5.  Extensible by Plugins/Extensions
    6.  Command line interface
    7.  Dark Mode
    8.  Debugging

    Cockpit Project VS Nagios

     
    Comments about Cockpit Project as an Alternative to Nagios
    Guest
    Negative Jul 20, 2024
    0

    Cockpit is great for what it does, but if a host is offline, all information about it is inaccessible.

    Nagios Icon
    Cockpit Project icon
    • Cockpit Project is Free and Open SourceNagios is Freemium and Open Source
    • Cockpit Project is LightweightNagios is not according to our users
  5. HyperDX icon

    HyperDX

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

    66 HyperDX alternatives

    License model

    • Freemium • Open Source

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Software as a Service (SaaS)
    • Self-Hosted
    • Docker
    HyperDX screenshot 1

    HyperDX Features

    1.  Application Monitoring
    2.  Metrics

    HyperDX VS Nagios

     
  6. LibreNMS icon

    LibreNMS

     37 likes
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    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...

    32 LibreNMS alternatives

    License model

    • Free • Open Source

    Application type

    Platforms

    • Linux
    • BSD
    • MySQL Community Edition
    • Apache HTTP Server
    • JavaScript
    • PHP
    LibreNMS screenshot 1

    LibreNMS Features

    1.  Network Discovery
    2.  SNMP Trap Support
    3.  IT Asset Management

    LibreNMS VS Nagios

     
    Comments about LibreNMS as an Alternative to Nagios
    Guest
    Positive Apr 1, 2019
    0

    Best open source tool that I've tried! Easy to install, manage and low support.

    Teke2
    Positive Mar 9, 2018
    0

    So easy to setup, very powerful, and can use the Nagios plugins.

    Nagios Icon
    LibreNMS icon

    • Almost everyone thinks LibreNMS is a great Nagios alternative.

    • LibreNMS is Free and Open SourceNagios is Freemium and Open Source
  7. Monitorix icon

    Monitorix

     9 likes
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    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.

    21 Monitorix alternatives

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • ES flagSpain
    • European Union flagEU

    Platforms

    • Linux
    Monitorix screenshot 1

    Properties

    1.  Lightweight

    Features

    1.  No Tracking
    2.  Ad-free
    3.  Dark Mode
    4.  No registration required
    5.  Hardware Monitoring
    6.  Application Monitoring

    Monitorix VS Nagios

     
  9. Laravel Nightwatch icon

    Laravel Nightwatch

     3 likes
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    Monitor your Laravel applications with precision. Enhance performance and reliability with error tracking, comprehensive logs, and deep insights tailored specifically for Laravel.

    51 Laravel Nightwatch alternatives

    License model

    • Freemium • Open Source

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Online
    • Laravel
    • Software as a Service (SaaS)
    Laravel Nightwatch screenshot 1

    Laravel Nightwatch Features

    1.  Ad-free
    2.  Dark Mode
    3.  Dashboard
    4.  Based on Laravel

    Laravel Nightwatch VS Nagios

     
  10. NetXMS icon

    NetXMS

     5 likes
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    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...

    43 NetXMS alternatives

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • SI flagSlovenia
    • European Union flagEU

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    NetXMS screenshot 1

    NetXMS Features

    1.  Hardware Monitoring
    2.  System management
    3.  Cloud Monitoring
    4.  Network Mapping
    5.  Traffic Monitoring
    6.  Application Monitoring

    NetXMS VS Nagios

     
  11. Pandora FMS icon

    Pandora FMS

     67 likes
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    Enterprise-ready monitoring solution that provides unparalleled flexibility for IT to address both immediate and unforeseen operational issues, including infrastructure and IT processes.

    License model

    • Freemium • Open Source

    Application types

    Country of Origin

    • ES flagSpain
    • European Union flagEU

    Platforms

    • Windows
    • Linux
    • Self-Hosted
    • FreeBSD
    • OpenBSD
    Pandora FMS visual console

    Properties

    1.  Privacy focused
    2.  Lightweight

    Features

    1.  Real time collaboration
    2.  Extensible by Plugins/Extensions
    3.  Command line interface
    4.  Auto Responder
    5.  Desktop Sharing
    6.  Ad-free
    7.  Dark Mode
    8.  Website Monitoring
    9.  Server Monitoring
    10.  Application Monitoring
    11.  Network Mapping
    12.  High Availability

    Pandora FMS VS Nagios

     
  12. Cacti icon

    Cacti

     25 likes
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    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...

    56 Cacti alternatives

    License model

    • Free • Open Source

    Application type

    Platforms

    • Windows
    • Linux
    Cacti screenshot 1

    Cacti Features

    1.  Graphs

    Cacti VS Nagios

     
10 of 36 Nagios alternatives