--- title: OpenNMS Platform Reviews meta_title: 'OpenNMS Platform Reviews 2026: Details, Pricing, & Features | G2' meta_description: Filter 11 reviews by the users' company size, role or industry to find out how OpenNMS Platform works for a business like yours. aggregate_rating: rating_value: 4.1 review_count: 11 scale: '5' date_modified: '2026-09-28' parent_category: name: Monitoring url: https://www.g2.com/categories/monitoring ---

OpenNMS Platform Reviews & Product Details

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Pricing

Pricing provided by OpenNMS Platform.

Essential

$42,000.00
Per Year

Premier

$56,700.00
Per Year

User Insights

Average based on 11 real user reviews.

Typical contract price

$0k - $0k

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Per Year

Talha K.
TK
Talha K.
Associate Manager Global Solutions
Small-Business (50 or fewer emp.)
"I used Open NMS in my previous organization"
3/5
What do you like best about OpenNMS Platform?

Open NMS is highly recommended because of its adaptation phase, we can generate many useful reports on it without deep knowledge. Review collected by and hosted on G2.com.

What do you dislike about OpenNMS Platform?

Sometimes it is quite difficult to manage many nodes and its working in Open NMS. Review collected by and hosted on G2.com.

Bhaskar T.
BT
Bhaskar T.
Freelancer & Trainer
Small-Business (50 or fewer emp.)
"Great platform for network monitoring."
4.5/5
What do you like best about OpenNMS Platform?

It has a very good UI.

With what I worked, alarms, polling were very well implemented.

It has very vast functionality. Review collected by and hosted on G2.com.

What do you dislike about OpenNMS Platform?

Eclipse integration wasn't made easy.

Without IDE, it's very tough to navigate through code base.

However, I tried to import it in Eclipse, but failed with so many errors in hand.

And I had to use it without IDE. Review collected by and hosted on G2.com.

Verified User in Electrical/Electronic Manufacturing
UE
Verified User in Electrical/Electronic Manufacturing
Small-Business (50 or fewer emp.)
"Used Opennms during HA testing of critical resources"
4/5
What do you like best about OpenNMS Platform?

There is a lot of helpful documentation. So, it's most likely to find answers to the questions we have during the customization of the OpenNMS system for the first time. Review collected by and hosted on G2.com.

What do you dislike about OpenNMS Platform?

There is a steep learning curve to use opennms. At times, we get overwhelmed with all the features. The XML configuration files are a bit too much at times. Review collected by and hosted on G2.com.

Gimmy J.
GJ
Gimmy J.
Information Communication Technology Engineer
Small-Business (50 or fewer emp.)
Business partner of the seller or seller's competitor, not included in G2 scores.
"Best and easily configurable tool"
4.5/5
What do you like best about OpenNMS Platform?

It's very easy to configure. Onboarding a server is pretty much easy. Just give IP address/Hostname and provision. That's it. Review collected by and hosted on G2.com.

What do you dislike about OpenNMS Platform?

UI can be more realistic and colorful like Ops-Genie. Review collected by and hosted on G2.com.

Verified User in Hospital & Health Care
AH
Verified User in Hospital & Health Care
Enterprise (> 1000 emp.)
"OpenNMS Solution Teview"
5/5
What do you like best about OpenNMS Platform?

It supports all the device models unlike cisco products Review collected by and hosted on G2.com.

What do you dislike about OpenNMS Platform?

We need to compile and set everything manually ... nothing comes as predefined Review collected by and hosted on G2.com.

Verified User in Computer & Network Security
UC
Verified User in Computer & Network Security
Mid-Market (51-1000 emp.)
Business partner of the seller or seller's competitor, not included in G2 scores.
"Professional platform"
4.5/5
What do you like best about OpenNMS Platform?

It is open source resources, that easily permit to resolve all the appeared issues by yourself. Review collected by and hosted on G2.com.

What do you dislike about OpenNMS Platform?

Sometimes is difficult to acquire a full coverage of desired infra. Review collected by and hosted on G2.com.

Verified User in Semiconductors
AS
Verified User in Semiconductors
Enterprise (> 1000 emp.)
"So strong, so simply"
4.5/5
What do you like best about OpenNMS Platform?

The usage of powerful SNMP protocol, often not so appreciated, gives an amazing way to monitor and collect data and alerts from different kinds of devices. ONMS helps enterprise architecture to have all in control. Review collected by and hosted on G2.com.

What do you dislike about OpenNMS Platform?

Some configurations can be a bit hard and not intuitive for those new to ONMS usage. The UI can be rearranged in a more modern way. Review collected by and hosted on G2.com.

Verified User in Computer Networking
UC
Verified User in Computer Networking
Mid-Market (51-1000 emp.)
"Used it for network monitoring in a VRRP setup"
4/5
What do you like best about OpenNMS Platform?

It allows you to add numerous devices, wide range of monitoring services and date analytics features. Review collected by and hosted on G2.com.

What do you dislike about OpenNMS Platform?

Delayed alerts, not so gOod UI & limited development community. Review collected by and hosted on G2.com.

Verified User in Information Technology and Services
CI
Verified User in Information Technology and Services
Enterprise (> 1000 emp.)
"User friendly and lots of features to use"
4/5
What do you like best about OpenNMS Platform?

Lot of features like performance management, path outage, discovery, dashboards Review collected by and hosted on G2.com.

What do you dislike about OpenNMS Platform?

Delay in alerting system, interface limitation, limited resources for development, here Nagios will come in rescue Review collected by and hosted on G2.com.

Verified User in Telecommunications
UT
Verified User in Telecommunications
Mid-Market (51-1000 emp.)
"It's a nice product to monitor networking products."
4.5/5
What do you like best about OpenNMS Platform?

Monitoring platform to monitor networking products Review collected by and hosted on G2.com.

What do you dislike about OpenNMS Platform?

Nothing to be honest..all good ..its worth product Review collected by and hosted on G2.com.

Pricing Options

Pricing provided by OpenNMS Platform.

Essential

$42,000.00
Per Year

Premier

$56,700.00
Per Year
OpenNMS Platform Comparisons