Nagios XI vs OpenNMS

Datadog

PRTG

Zabbix

Grafana

ManageEngine OpManager Plus

AppNeta

Compare Nagios XI and OpenNMS based on features, pricing, verified reviews, integrations & more on GetApp. Find out which software is best for your business in 2026.

ManageEngine Applications Manager

Applications Manager is an application performance monitoring and observability solution that is designed to empower businesses with deep insights into the performance, health, and availability of their critical applications and infrastructure components.

Site24x7

Site24x7 is a monitoring solution for DevOps and IT operations for troubleshooting applications, servers and network infrastructure

ManageEngine OpManager

OpManager is an easy-to-use network management product that offers a single console solution to manage the complete IT network of any organization.

Monitor your IT infrastructure, spot problems before they occur, know immediately when problems arise, share availability data with stakeholders, detect security breaches, plan & budget for IT upgrades, reduce downtime & business losses

Access Controls/Permissions

Activity Dashboard

Alerts/Escalation

Alerts/Notifications

Anomaly Detection

Application-Level Analysis

Audit Management

Audit Trail

Automated Discovery

Automated Scheduling

Bandwidth Monitoring

Baseline Manager

Capacity Management

Capacity Planning

Compliance Management

Container Monitoring

Customizable Dashboard

Customizable Reports

Dashboard

Dashboard Creation

Database Monitoring

Data Storage Management

Data Visualization

Dependency Tracking

Diagnostic Tools

Email Alerts

Email Monitoring

Event Logs

Event Tracking

Incident Management

IP Address Monitoring

Issue Auditing

Maintenance Scheduling

Monitoring

Multitenancy

Network Analysis

Network Monitoring

Network Resource Management

Performance Metrics

Performance Monitoring

Predictive Analytics

Real-Time Data

Real-Time Monitoring

Real-Time Notifications

Real-Time Reporting

Remote Access/Control

Remote Monitoring & Management

Reporting/Analytics

Reporting & Statistics

Role-Based Permissions

Secure Data Storage

Server Monitoring

Service Level Agreement (SLA) Management

Single Sign On

SSL Security

Status Tracking

Summary Reports

Third-Party Integrations

Threshold Alerts

Transaction Monitoring

Trend Analysis

Troubleshooting

Uptime Reporting

User Management

Virtualization

Virtual Machine Monitoring

Visual Analytics

Web Traffic Reporting

Open Source

Nagios XI

Web-based

Windows

Linux

Free Edition

Standard Edition

Enterprise Edition

Sitewide

Engineer

Nagios XI can be quite complex to set up the first time you use it.

DevOps

The GUI doesn't seem to be most updated and some of the features are hard to find (UX issue)

Nagios XI was easy to setup (from the tools we tested), although it has many plugins you can always and easily create your own plugin (anything that is measurable), it has good alerting system when it comes to emails, seems like the GUI/UX could have been more modern but overall experience is very good.

Certain features doesn't help you get down to the root-cause of the issues and investigation has to be done outside the tool.

User Interface

Ease of Use

Pricing

Freelancers

Small Business

Large Enterprises

Mid-size Business

Nagios Enterprises

PagerDuty

PagerDuty is a cloud software that connects people, systems & data into a single view - creating visibility & actionable intelligence across their operations.

Pulseway

Pulseway is a remote monitoring and management software designed for managing workstations, servers, and network devices across Windows, Mac, and Linux environments. The platform includes real-time monitoring with actionable alerts, remote control capabilities with unlimited sessions, automated patch management for operating systems and third-party applications, and scripting tools with auto-remediation features.

OpenNMS is an award winning network management application platform with a long track record of providing solutions for enterprises and carriers.

Nagios XI vs OpenNMS Comparison (2026)

Nagios XI

OpenNMS

Overview

Video & Screenshots

Pricing

User reviews

Key features

Integrations

Alternatives