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What Is OpenNMS?

OpenNMS is a cloud-based network monitoring solution that helps businesses manage distributed networks on a centralized interface. The software enables users to monitor data points through a distributed system, as well as an extensible event-driven architecture for workflow integration. OpenNMS provides a variety of features such as inventory management, traffic monitoring, data collection, reporting, and more.

Who Uses OpenNMS?

OpenNMS is a cloud-based network monitoring solution designed for businesses in healthcare, technology, finance, government, education, retail, and other industries.

OpenNMS Software - Network Health
OpenNMS Software - Network Topology
OpenNMS Software - Traffic Analysis

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Reviews of OpenNMS

Average score

Overall
4.9
Ease of Use
3.9
Customer Service
4.4
Features
4.7
Value for Money
4.9

Reviews by company size (employees)

  • <50
  • 51-200
  • 201-1,000
  • >1,001

Find reviews by score

5
89%
4
11%
Alan
Verified LinkedIn User
Used the Software for: 1+ year
Reviewer Source
Source: GetApp

Fast, Reliable, and Free Monitoring

5.0 8 years ago

Comments: OpenNMS has had its ups and downs between versions, but has always been reliable and free monitoring. There are a lot of features that can be enabled with OpenNMS through the browser, but some will require having to open a text editor and manually creating or editing a text file. While there is a learning curve to this monitoring system if you've had experience with other monitoring systems, there is a very large support group that is always helpful.

Pros:

Easy to use after configuration. Feature-rich. Supports escalations and different contact groups.

Cons:

Not the easiest to configure for multiple groups supported.

Pablo
Lead Sr. Network Architect in US
Higher Education, 10,000+ Employees
Used the Software for: 2+ years
Reviewer Source

OpenNMS is overall a great product

5.0 8 months ago

Comments: I have been using OpenNMS for years now. The fact that it is Open Source and has a wide community support is a big plus for me. We use OpenNMS daily as a powerful tool to proactively monitor our network. It has the flexibility and it is customizable to fit our needs. I highly recommend this product for network engineers who want to closely monitor their equipment, regardless of the network vendor they use.

Pros:

OpenNMS has substantial support for traps and notifications based on those traps. We use it with great success on our network to get instant notifications on hardware failures, critical links down, etc. OpenNMS excels in providing a comprehensive collection of network graphs (including CPU, temperature, VPN active sessions, and much more) that we can display in beautiful panels using Grafana. We also use the API extensively to add/remove devices from OpenNMS without having to manually perform the task and keeping all monitored devices in sync with all our other network tools.

Cons:

I have to admin that OpenNMS has a learning curve, and it should have more configuration parameters available on the web interface.

Verified Reviewer
Verified LinkedIn User
Hospital & Health Care, 10,000+ Employees
Used the Software for: 2+ years
Reviewer Source

OpenNMS Review

4.0 7 months ago

Pros:

OpenNMS is very powerful and customizable.

Cons:

A lot of the configurations are difficult and need to be done by editing XML files.

David
Research and Development Manager in US
Information Technology & Services, 1,001–5,000 Employees
Used the Software for: 2+ years
Reviewer Source

Great monitoring platform for any size network

5.0 8 months ago

Comments: Used as the core software to provide network, server, and application monitoring as an MSP.

Pros:

The out of the box experience covers many scenarios and all the right integration and customization layers are well thought out.

Cons:

It would be nice if it scaled horizontally a bit better especially in the areas of polling and gathering of performance monitoring data. Multi-tenancy is not strong.

Udo
IT Adminstration in Germany
Health, Wellness & Fitness, 501–1,000 Employees
Used the Software for: 2+ years
Reviewer Source

Reliable with good performance

5.0 7 months ago

Pros:

I like event-translator and provisioning because i can fit opennms to our needs in communcation to our other tools

Cons:

Difficult file-based configuration of some features Upgrade to new versions needs configuration by hand of files