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Checkmk vs Nmap comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Oct 10, 2024

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

Checkmk
Ranking in Network Monitoring Software
15th
Average Rating
8.4
Reviews Sentiment
7.3
Number of Reviews
9
Ranking in other categories
Server Monitoring (10th), IT Infrastructure Monitoring (27th), Cloud Monitoring Software (17th)
Nmap
Ranking in Network Monitoring Software
30th
Average Rating
8.6
Reviews Sentiment
7.5
Number of Reviews
23
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of May 2026, in the Network Monitoring Software category, the mindshare of Checkmk is 1.7%, down from 3.8% compared to the previous year. The mindshare of Nmap is 0.9%, up from 0.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software Mindshare Distribution
ProductMindshare (%)
Checkmk1.7%
Nmap0.9%
Other97.4%
Network Monitoring Software
 

Featured Reviews

reviewer1704309 - PeerSpot reviewer
IT Administrator at a construction company with 201-500 employees
Utilizing data monitoring capabilities and scripting potential to optimize system management
I frequently program functions with PowerShell, and although Bash could be used, my specialization is in PowerShell. Two of us focus on programming in PowerShell for infrastructure optimization. I set up a dedicated server to run scripts every hour, generating files for Checkmk output. However, Checkmk does not allow running scripts at varying intervals. I am working on this in the raw version of Checkmk.
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.

Quotes from Members

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

Pros

"The most valuable feature of the solution is that it has a lot of different pieces, and they all work together...It is a very scalable solution. Scalability-wise, I rate the solution a ten out of ten."
"The most valuable features of Checkmk are its resource monitoring, infra monitoring, and log factor configuration."
"I really like the auto-discovery feature."
"Checkmk was built on a platform that was user-friendly, and I could build my charts easily."
"It's versatile, scalable, and easier to use compared to other solutions like Nagios and OMD."
"Checkmk helps me compare data and foresee issues."
"We can monitor multiple sites using the product."
"Overall, from one to ten, I rate Checkmk a nine."
"The solution really is not comparable to other products because of its many features."
"Nmap is free and should stay this way."
"The most important function, according to me, is the capability to use some arguments in the scanning. The solution's capability to go figure and do a deep dive, discovering information on specific aspects."
"Nmap is mostly helpful during compliance checks. We run the scanner to see how many devices are on our network and find vulnerabilities in those that aren't compliant. We also use it monthly to scan our network and identify devices that aren't connected properly. This helps us detect any issues related to the operating systems of these devices."
"The scanning procedure includes UDP ports which sets it apart from competitors."
"This was my first project, and Nmap was the best tool that I have used to date, and I recommend it to everyone."
"The initial setup was simple."
"The solution detects the operating systems, which makes testing the software much easier before making the payload."
 

Cons

"Checkmk does not work too easily with the PowerStore. I use a PowerShell script as Checkmk runs on Linux and a Windows system, connecting with the Checkmk agent."
"I think that the integration and the exporting of the data collected are areas where Checkmk lacks but should try to improve the most."
"The main challenge for us is that we're moving from Nagios to Checkmk, and we're still getting used to the new way of working."
"The initial setup is a bit complex."
"In Checkmk, the documentation can probably be improved a bit more."
"Checkmk does not allow running scripts at varying intervals."
"It is easy for tech-savvy people, but newcomers might find it intimidating."
"Sometimes we receive alerts, and it can become annoying when you acknowledge an alert. It is very clunky when you acknowledge the alert. The process is not very intuitive, and there are instances where it feels a bit cumbersome to acknowledge an alert."
"Nmap needs to improve its scanning speed."
"Customization is not very user-friendly in Nmap."
"I would like something more user-friendly to use and export data to various software."
"The solution's initial setup could be better."
"Nmap major operates through the CLI; there's no GUI component, and that's where the challenge is."
"The solution is not that easy for a beginner to learn."
"The solution should increase the number of features under a free license."
"The challenge often lies in finding suitable courses and professional resources."
 

Pricing and Cost Advice

"The product is affordable."
"The price of Checkmk is cheaper compared to other enterprise products."
"Checkmk is a fairly reasonably priced solution."
"The solution is free of cost."
"It's an open-source product, and I haven't seen any premiums. Options are available for those who purchase, but for my use case, everything I need is available in the community and forums."
"I am using the standard free version of Nmap."
"I am using the free version of Nmap."
"It's an open-source solution. Commerically, only the support service is available."
"The solution is free of cost, but there are specific services that we have to buy."
"Nmap is an open-source product. You don't need a license to install it."
"Nmap is open source software, which suits us well because we are a manufacturing company and not an IT company, for example. If we were an IT company, we would probably need to pay for extra support or instead go for another software solution. But as it is, we don't have any need for high-end troubleshooting tools."
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Top Industries

By visitors reading reviews
Manufacturing Company
9%
Government
9%
Computer Software Company
9%
Comms Service Provider
8%
Construction Company
10%
Manufacturing Company
10%
Government
9%
University
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business4
Midsize Enterprise3
Large Enterprise2
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise1
Large Enterprise14
 

Questions from the Community

What needs improvement with Checkmk?
I will get more information about Checkmk when the proof of concept is done. It's going to be before the summer. There will be a report about the tool and a recommendation to use it. So far, it loo...
What is your primary use case for Checkmk?
Checkmk ( /products/checkmk-reviews ) is a monitoring tool, so that's what I will use it for. Right now, it's not in production, but it's in a proof of concept phase. It looks good, so probably, du...
What advice do you have for others considering Checkmk?
I would rate Checkmk an eight out of ten, not knowing the final report.
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...
 

Comparisons

 

Overview

 

Sample Customers

Information Not Available
Lockheed Martin, Eastern Bank Boston, Perspecta, Harris Corporation, Discovery Communication
Find out what your peers are saying about Checkmk vs. Nmap and other solutions. Updated: April 2026.
894,738 professionals have used our research since 2012.