Top 12 Open-Source Alternatives to Nagios

The top open-source alternatives to Nagios are Zabbix, Datadog, and Prometheus. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Zabbix Landing Page
1

Zabbix

Track, record, alert and visualize performance and availability of IT resources
Pricing:
- Open Source
- Free
#Monitoring Tools #Performance Monitoring #DevOps Tools 5 social mentions
Datadog Landing Page
2

Datadog

See metrics from all of your apps, tools & services in one place with Datadog's cloud monitoring as a service solution. Try it for free.
Pricing:
- Open Source
- Freemium
- Free Trial
- $15.0 / Monthly (per host)
#Monitoring Tools #Log Management #Error Tracking 5 social mentions
Prometheus Landing Page
3

Prometheus

An open-source systems monitoring and alerting toolkit.
Pricing:
- Open Source
#Monitoring Tools #Performance Monitoring #Log Management 224 social mentions
Grafana Landing Page
4

Grafana

Data visualization & Monitoring with support for Graphite, InfluxDB, Prometheus, Elasticsearch and many more databases
Pricing:
- Open Source
#Data Dashboard #Data Visualization #Data Analytics 197 social mentions
Icinga Landing Page
5

Icinga

Icinga is a fork of Nagios and is backward compatible.
Pricing:
- Open Source
#Monitoring Tools #Log Management #Performance Monitoring 8 social mentions
LibreNMS Landing Page
6

LibreNMS

A fully featured network monitoring system that provides a wealth of features and device support.
Pricing:
- Open Source
#Monitoring Tools #Network Monitoring #Performance Monitoring
Netdata Landing Page
7

Netdata

Monitor your servers, containers, and applications, in high-resolution and in real-time.
Pricing:
- Open Source
- Freemium
- Free Trial
- $3.0 / Monthly (Netdata Pro, $3 /Node /mo - Netdata Business, $4 /Node /mo )
#Monitoring Tools #Performance Monitoring #Incident Management 5 social mentions
Cacti Landing Page
8

Cacti

Cacti is a complete network graphing solution. It provides a fast poller, advanced graph templating, multiple data acquisition methods, and user management features.
Pricing:
- Open Source
#Monitoring Tools #Performance Monitoring #Log Management
Munin Landing Page
9

Munin

PnP networked resource monitoring tool that can help to answer the what just happened to kill our performance
Pricing:
- Open Source
#Monitoring Tools #Performance Monitoring #Log Management 17 social mentions
Checkmk Landing Page
10

Checkmk

Checkmk - the software for effective IT monitoring
Pricing:
- Open Source
- Freemium
- Free Trial
- €600.0 / Annually
#Monitoring Tools #Log Management #Incident Management 53 social mentions
Wireshark Landing Page
11

Wireshark

Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.
Pricing:
- Open Source
#Monitoring Tools #Log Management #Performance Monitoring 11 social mentions
Shinken Landing Page
12

Shinken

Nagios compatible monitoring framework, written in Python
Pricing:
- Open Source
#Monitoring Tools #Website Monitoring #Network & Admin