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Nmap vs OpenNMS comparison

 

Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Nmap
Ranking in Network Monitoring Software
27th
Average Rating
8.6
Reviews Sentiment
7.5
Number of Reviews
23
Ranking in other categories
No ranking in other categories
OpenNMS
Ranking in Network Monitoring Software
53rd
Average Rating
0.0
Number of Reviews
0
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 2026, in the Network Monitoring Software category, the mindshare of Nmap is 1.1%, up from 0.5% compared to the previous year. The mindshare of OpenNMS is 1.0%, down from 1.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software Mindshare Distribution
ProductMindshare (%)
Nmap1.1%
OpenNMS1.0%
Other97.9%
Network Monitoring Software
 

Featured Reviews

Sai Aditya Panda - PeerSpot reviewer
Student at a consultancy with 11-50 employees
Penetration testing has become efficient as I identify open ports and security risks with confidence
Nmap could potentially become a GUI and provide automatic reports with one-click downloads. For example, the report could show all the open ports for an IP address with a professionally formatted report. This is a far-fetched suggestion and not really required, but it could make the work a little better. On a scale of one to ten, I give Nmap a solid nine. I mean, how can you fix something that is not broken? Nmap is already the best, and I do not think there are any other features that can be added. Its job is reconnaissance, so I do not think there is more to add to it. However, if I get any ideas, I will let them know about this.
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Top Industries

By visitors reading reviews
Manufacturing Company
10%
Construction Company
9%
Government
9%
University
9%
Government
22%
Manufacturing Company
10%
Comms Service Provider
9%
Construction Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise1
Large Enterprise14
No data available
 

Questions from the Community

What is your primary use case for Nmap?
My main use case for Nmap is reconnaissance, so identifying open ports or running services and ultimately finding the security risks or vulnerabilities in a system. OS detection is the most importa...
What advice do you have for others considering Nmap?
I think I should be learning more about the commands and how Nmap works so that it will be better for my career. I will do that. There is nothing else to add to it, except a huge thank you to the p...
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Comparisons

 

Overview

 

Sample Customers

Lockheed Martin, Eastern Bank Boston, Perspecta, Harris Corporation, Discovery Communication
OpenNMS users include five of the top twenty companies on the Fortune 100, as well as multiple large and multi-state health providers and one of the largest electronic medical record providers in the United States.
Find out what your peers are saying about Zabbix, SolarWinds, Auvik and others in Network Monitoring Software. Updated: May 2026.
900,644 professionals have used our research since 2012.