Free Nagios AlternativesTop Network Monitors and other similar apps like Nagios

The best free alternative to Nagios is Zabbix, which is also Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Nagios and loads of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Nagios are Netdata, Cockpit Project, Spiceworks and LibreNMS.

Nagios alternatives are mainly Network Monitors but may also be Uptime Monitor Services or Web Log Analyzers. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Nagios.

Nagios

Freemium • Open Source
Network Monitor

Nagios is a powerful monitoring system that enables organizations to identify and resolve IT infrastructure problems before...

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Zabbix
Is this is a good alternative?
Yes
No
Free • Open Source
Network Monitor
Uptime Monitor Service
Linux
Self-Hosted
FreeBSD
OpenBSD
109 Zabbix alternatives
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.
- - Zabbix is the most popular Linux & Self-Hosted alternative to Nagios.
- - Zabbix is the most popular Open Source & free alternative to Nagios.
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Zabbix Features
1. No registration requiredYou can use most of the features in Zabbix without registration.
2. Ad-freeZabbix doesn't contain any form of external advertising.
3. Privacy focusedZabbix is considered a privacy friendly alternative.
Server Monitoring
Hardware Monitoring
Custom Dashboard
Azure integration
Comments about Zabbix as a Alternative to Nagios
Almost everyone thinks Zabbix is a great Nagios alternative.
Guest
Innovative UI and complex functions.
Positive comment •
-1
Netdata
Is this is a good alternative?
Yes
No
Freemium • Open Source
Network Monitor
Uptime Monitor Service
Error Logger
Mac
Linux
Online
BSD
Self-Hosted
C (programming language)
Python
Bash
41 Netdata alternatives
Netdata collects metrics per second and presents them in beautiful low-latency dashboards. It is designed to run on all of your physical and virtual servers, cloud deployments, Kubernetes clusters, and edge/IoT devices, to monitor your systems, containers, and applications.
- - Netdata is the most popular Web-based & Mac alternative to Nagios.
Suggest and vote on features
Netdata Features
1. Website MonitoringNetdata can detect and resolve website performance issues proactively.
2. No Coding RequiredNetdata can be used without an coding or programming skills.
3. Real time collaborationMultiple users can work together in Netdata simultaneously.
4. LightweightNetdata consumes less device resources compared to similar apps.
5. No registration requiredYou can use most of the features in Netdata without registration.
6. Dark ModeNetdata supports dark mode for comfortable usage in low light conditions.
7. Works OfflineNetdata can be used without the need to connect to the internet.
8. No TrackingNetdata will not track you or use your personal data.
9. Privacy focusedNetdata is considered a privacy friendly alternative.
Server Monitoring
Real-time Statistics
Hardware Monitoring
Cloud Monitoring
Performance Monitoring
Container monitoring
Database Monitoring
Traffic Monitoring
Data visualization
Standalone
Comments about Netdata as a Alternative to Nagios
Most users think Netdata is a great Nagios alternative.
Guest
Super fast monitoring of the system, and also of the monitors the kernel of the system.
Positive comment •
1
Cockpit Project
Is this is a good alternative?
Yes
No
Free • Open Source
Server Management Tool
Linux
14 Cockpit Project alternatives
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.
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Cockpit Project Features
1. LightweightCockpit Project consumes less device resources compared to similar apps.
2. Ad-freeCockpit Project doesn't contain any form of external advertising.
3. No registration requiredYou can use most of the features in Cockpit Project without registration.
4. Command line interfaceCockpit Project either have CLI support or is a CLI-only app.
Configuration
Server Monitoring
Debugging
Spiceworks
Is this is a good alternative?
Yes
No
Free • Proprietary
Network Monitor
Help Desk Platform
Windows
Online
Android
Android Tablet
131 Spiceworks alternatives
Join millions of IT professionals and download Spiceworks, a free network monitoring software with network management tools, help desk ticketing app, network mapper and more.
- - Spiceworks is the most popular Windows, Android & Android Tablet alternative to Nagios.
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Spiceworks Features
Knowledge base
Hardware Monitoring
Helpdesk Ticketing
IT Asset Management
Product Reviews
Network Mapping
Opinions about Spiceworks as a Alternative to Nagios
Some users think Spiceworks is a great Nagios alternative, some don't.
LibreNMS
Is this is a good alternative?
Yes
No
Free • Open Source
Network Monitor
Linux
BSD
MySQL Community Edition
Apache HTTP Server
JavaScript
PHP
29 LibreNMS alternatives
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...
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LibreNMS Features
Network Discovery
SNMP Trap Support
IT Asset Management
Comments about LibreNMS as a Alternative to Nagios
Almost everyone thinks LibreNMS is a great Nagios alternative.
Guest
Best open source tool that I've tried! Easy to install, manage and low support.
Positive comment •
0

Teke2
So easy to setup, very powerful, and can use the Nagios plugins.
Positive comment •
0
Icinga
Is this is a good alternative?
Yes
No
Freemium • Open Source
Network Monitor
Mac
Linux
57 Icinga alternatives
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...
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Icinga Features
Hardware Monitoring
Opinions about Icinga as a Alternative to Nagios
Almost everyone thinks Icinga is a great Nagios alternative.
Munin
Is this is a good alternative?
Yes
No
Free • Open Source
Network Monitor
Linux
64 Munin alternatives
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.
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Munin Features
Network Tools
Cabot
Is this is a good alternative?
Yes
No
Free • Open Source
Network Monitor
Uptime Monitor Service
Self-Hosted
111 Cabot alternatives
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.
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Cabot Features
1. Website MonitoringCabot can detect and resolve website performance issues proactively.
Lansweeper
Is this is a good alternative?
Yes
No
Freemium • Proprietary
Windows
44 Lansweeper alternatives
Lansweeper discovers Windows, Linux and Mac machines in your network. In addition, it inventories network devices such as Printers, Routers and Switches.
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Lansweeper Features
Network Discovery
IT Asset Management
Asset Management
Software Deployment
Network Tools
Cacti
Is this is a good alternative?
Yes
No
Free • Open Source
Network Monitor
Windows
Linux
53 Cacti alternatives
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...
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Cacti Features
Graphs
Opinions about Cacti as a Alternative to Nagios
Most users think Cacti is a great Nagios alternative.
PHP Server Monitor
Is this is a good alternative?
Yes
No
Free • Open Source
Uptime Monitor Service
Network Monitor
Windows
Linux
BSD
Self-Hosted
PHP
Cloudron
87 PHP Server Monitor alternatives
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.
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PHP Server Monitor Features
1. LightweightPHP Server Monitor consumes less device resources compared to similar apps.
2. Website MonitoringPHP Server Monitor can detect and resolve website performance issues proactively.
Statistics and Reports
Discontinued
The last release is from August 2020.
Checkmk
Is this is a good alternative?
Yes
No
Freemium • Open Source
Network Monitor
Uptime Monitor Service
Windows
Linux
Docker
37 Checkmk alternatives
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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Checkmk Features
Distributed Monitoring
Performance Monitoring
Server Monitoring
Storage Monitoring
Downtime Detection
Application Monitoring
Computer monitoring
Database Monitoring
Kubernetes Monitoring
NGINX Monitoring