Top 12 Open-Source Alternatives to OpenNMS

The top open-source alternatives to OpenNMS are Zabbix, LibreNMS, and Nagios. 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
LibreNMS Landing Page
2

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
Nagios Landing Page
3

Nagios

Complete monitoring and alerting for servers, switches, applications, and services
Pricing:
- Open Source
#Monitoring Tools #Performance Monitoring #Log Management
Icinga Landing Page
4

Icinga

Icinga is a fork of Nagios and is backward compatible.
Pricing:
- Open Source
#Monitoring Tools #Log Management #Performance Monitoring 8 social mentions
Checkmk Landing Page
5

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
Cacti Landing Page
6

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
Prometheus Landing Page
7

Prometheus

An open-source systems monitoring and alerting toolkit.
Pricing:
- Open Source
#Monitoring Tools #Performance Monitoring #Log Management 224 social mentions
Datadog Landing Page
8

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
Cobbler Landing Page
9

Cobbler

Cobbler is a Linux installation server that allows for rapid setup of network installation...
Pricing:
- Open Source
#DevOps Tools #IT Automation #Product Deployment 10 social mentions
openITCOCKPIT Landing Page
10

openITCOCKPIT

openITCOCKPIT is a leading open source monitoring framework based on Naemon (Nagios). In addition it integrates Checkmk and Prometheus. It also offers interfaces to Icinga2, PRTG and opManager to obtain status and performance from them.
Pricing:
- Open Source
- Freemium
- Free Trial
#Monitoring Tools #Log Management #Error Tracking 17 social mentions
Grafana Landing Page
11

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
NEXOG Landing Page
12

NEXOG

Network Management, Monitoring and Orchestration. Real time monitoring for business-critical applications
Pricing:
- Open Source
- Paid
- Free Trial
#Monitoring Tools #Log Management #Error Tracking