OpenNMS

Enterprise Network Monitoring Evolved

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What is OpenNMS?

OpenNMS is an open-source network monitoring and management platform designed to deliver real-time visibility, automation, and analytics across complex IT environments. Built for enterprises, service providers, and MSPs, OpenNMS offers advanced fault detection, performance monitoring, and service assurance through a highly scalable and extensible architecture. With support for both on-premises and hybrid deployments, it enables IT teams to proactively manage networks, reduce downtime, and optimize performance across distributed infrastructures.

Pricing of OpenNMS

Core

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1 Meridian installation
Bug fixes
Security updates

Essential

USD 0

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Up to 2 Meridian installations
Up to 25 Minions
Installation consulting
Meridian installation
Minion
OpenNMS plugin for Grafana

Premier

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Up to 4 Meridian installations
Up to 100 Minions
Installation consulting
Everything in Essential plan
Flows / Streaming telemetry
External Time Series Storage

Premier+

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More than 4 Meridian installations
More than 100 Minions
Installation consulting
Everything in Premier plan
Sentinel
Faster SLA
Mid-year checkup

Key Features of OpenNMS

Key Features:

Alerts/Notifications
Event Logs
Dashboard
Network Resource Management
Performance Metrics
Issue Management

Key Specification

Other Categories:	Network Management Software Network Monitoring Software Free Network Monitoring Software
Deployment:	On Premise
Customer Support:	Phone,Email,Online (Ticket)
Customization:	Yes
Languages Support:	English

Who uses OpenNMS

Personal

StartUps

SMEs

Agencies

Enterprises

Company Details

Company Name:	The OpenNMS Group
Headquarter:	United States
Social Media:	Facebook Twitter LinkedIn

OpenNMS Description

Benefits of OpenNMS

Comprehensive Monitoring: Continuously monitors devices, services, and applications across the network.
Scalability: Capable of monitoring thousands of devices and nodes, ideal for large enterprises and carriers.
Event Management: Consolidates alerts, correlates events, and provides actionable insights.
Service Assurance: Tracks network and application service availability with advanced SLA monitoring.
Extensibility: Modular architecture with plugins and integrations for different use cases.
Flow & Traffic Analysis: Provides detailed flow collection and bandwidth utilization insights.
Open-Source Flexibility: Offers customization and community-driven improvements.
Integration Support: Connects with ITSM, orchestration, and automation tools.

How to Use OpenNMS?

Deploy the Solution: Install as an on-premises solution or in hybrid IT environments.
Discover Devices: Automatically scan and detect network elements, services, and applications.
Set Up Monitoring: Configure performance thresholds, service availability, and SNMP-based monitoring.
Configure Alerts: Define event policies and use correlation tools for smarter incident management.
Monitor & Analyze: Access dashboards for real-time status, performance metrics, and topology views.
Automate Operations: Use automation features to reduce manual tasks and streamline workflows.
Generate Reports: Build and export detailed reports on performance, outages, and SLAs.

Features of OpenNMS

Network Discovery & Topology Mapping
Fault & Event Management with Correlation
Performance & Availability Monitoring
Flow Data Collection (NetFlow, sFlow, JFlow)
SLA & Service Assurance Monitoring
Extensible Plugin Architecture
Multi-Tenant Support for Enterprises and MSPs
Integration with ITSM and automation platforms
Role-Based Dashboards & Reporting
Open-Source Community and Commercial Support Options

OpenNMS Demo

A demo and trial version of OpenNMS is available, allowing organizations to test its monitoring, automation, and reporting features before full deployment.

OpenNMS Pricing

Open-Source Edition: Community-supported and free to use.
Commercial Support: Available through subscription plans from The OpenNMS Group.
Flexible Licensing: Based on enterprise requirements and deployment size.
No Free Plan Limitation: The open-source version is permanently free, with enterprise options for support and scalability.

OpenNMS Reviews

Users of OpenNMS appreciate its open-source flexibility, scalability, and ability to handle enterprise-grade monitoring. IT teams value its strong event correlation, custom dashboards, and support for complex network infrastructures. Reviewers also highlight the active community and availability of commercial support for enterprises needing dedicated assistance. Some note that the learning curve and initial configuration may require technical expertise, but once set up, it provides robust monitoring capabilities and reduces downtime across large, distributed networks.