OpenNMS

IT & cloud

Open-source softwareEditorial overview
A CLOSER LOOK

What is OpenNMS?

OpenNMS is an infrastructure monitoring platform for discovering services and collecting events and performance measurements. It includes service discovery, event management, and performance collection. It is aimed at operations teams monitoring large or varied network estates.

Service discovery

Event management

Performance collection

Is it a good fit?

Best suited to

Operations teams monitoring large or varied network estates

Before you choose

The open source deployment requires substantial configuration and infrastructure. Commercial distributions, support, and managed services are separate offerings.

Editorial assessment based on the provider’s published information. Our method

Know what you're signing up for.

The application is distributed under AGPL-3.0. The self-hosted software has no license subscription charge; servers, storage, networking, maintenance, and separately sold services remain your responsibility.

The $0 price covers the open source software license. Deployment infrastructure, operations and separately purchased services are not included.

Check current official pricing

The useful parts. The trade-offs.

Why consider it

Brings service discovery and event management into the same workflow.

Discover a controlled set of nodes, verify collected metrics and events, and define useful alarm handling before scaling to the wider environment.

What to keep in mind

The open source deployment requires substantial configuration and infrastructure.

Commercial distributions, support, and managed services are separate offerings.

How to use it well

OpenNMS fits operations teams monitoring large or varied network estates. Discover a controlled set of nodes, verify collected metrics and events, and define useful alarm handling before scaling to the wider environment.

The open source deployment requires substantial configuration and infrastructure. Commercial distributions, support, and managed services are separate offerings. Start with a small setup and verify credentials, network access, and recovery steps before expanding its role.

A few things you might be wondering.

Is OpenNMS free?

The application is distributed under AGPL-3.0. The self-hosted software has no license subscription charge; servers, storage, networking, maintenance, and separately sold services remain your responsibility.

Can I use OpenNMS for service discovery?

Yes. OpenNMS includes service discovery. Discover a controlled set of nodes, verify collected metrics and events, and define useful alarm handling before scaling to the wider environment.

Does the open source deployment require operational infrastructure?

The open source deployment requires substantial configuration and infrastructure.

Where can I check the latest prices?

Use the provider link on this page. Billing period, location, team size, promotions, taxes, and optional extras may affect the amount you pay.

How should I compare this tool with alternatives?

Choose tools for the same task, then compare their feature limits, platform support, and total cost for your team. The Compare button helps you keep a shortlist.

Are the user reviews moderated?

Yes. New reviews are submitted for moderation. We show published user reviews separately from the editorial overview and never assign a default user rating.

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