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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
14th
Average Rating
8.4
Reviews Sentiment
7.3
Number of Reviews
9
Ranking in other categories
Server Monitoring (11th), IT Infrastructure Monitoring (26th), Cloud Monitoring Software (19th)
Nmap
Ranking in Network Monitoring Software
9th
Average Rating
8.6
Reviews Sentiment
7.7
Number of Reviews
22
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of January 2026, in the Network Monitoring Software category, the mindshare of Checkmk is 2.6%, down from 2.9% compared to the previous year. The mindshare of Nmap is 0.7%, up from 0.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software Market Share Distribution
ProductMarket Share (%)
Nmap0.7%
Checkmk2.6%
Other96.7%
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.
MR
CEO at a tech services company with 11-50 employees
Improves network monitoring and offers insights into traffic, including VPNs
The real-time reporting feature of Nmap is particularly valuable. It generates detailed reports on the source and destination IP addresses, the protocols used, and the types of traffic. This feature is crucial for law enforcement agencies to monitor and analyze network connectivity effectively. It also has traffic analysis. For example, assessing bandwidth usage and configuring the tool to track specific types of traffic is crucial. Unlike SolarWinds, which requires configuration for this, Nmap has built-in functionality that allows it to check all 4,000 computer ports. It identifies the type of traffic each port is using and can easily generate reports on network communications between computers, whether there are 100 or 1000 in the network.

Quotes from Members

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

Pros

"Checkmk was built on a platform that was user-friendly, and I could build my charts easily."
"The alerting system in Checkmk really works properly."
"The most valuable features of Checkmk are its resource monitoring, infra monitoring, and log factor configuration."
"It's versatile, scalable, and easier to use compared to other solutions like Nagios and OMD."
"Checkmk helps me compare data and foresee issues."
"I really like the auto-discovery feature."
"We can monitor multiple sites using the product."
"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 real-time reporting feature of Nmap is particularly valuable. It generates detailed reports on the source and destination IP addresses, the protocols used, and the types of traffic."
"Nmap has a powerful command line tool and a set of diagnostic features."
"Nmap is easy to use. It's a command-line interface, and the output is quite good."
"It helps us secure the network infrastructure."
"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."
"The solution detects the operating systems, which makes testing the software much easier before making the payload."
"The best feature of Nmap is that it lets me see useful information about each endpoint in my entire network environment. For example, I can see every single connection of the network as well as each and every port."
"Nmap's performance is great, and I've never noticed any issues in this respect. It really doesn't put a heavy load on the machine when using it."
 

Cons

"Checkmk does not allow running scripts at varying intervals."
"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."
"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."
"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."
"It is easy for tech-savvy people, but newcomers might find it intimidating."
"If an alert is generated for a specific pattern in the log, and if Checkmk catches that log, it will stay there even after the alert is resolved."
"The initial setup is a bit complex."
"Nmap needs to improve its scanning speed."
"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."
"There is room for improvement in the design, the GUI. It looks a bit odd. Maybe Nmap should improve it or add more widgets to make it more attractive, but the basic functionality is good and provides what we need."
"It takes a bit of time to get familiar with the solution and its options."
"One of the drawbacks of the standard Nmap utility is that it does not come with a graphical user interface, unlike a number of other open-source alternatives such as Zenmap."
"They should deliver Playtech's username and password."
"Customization is not very user-friendly in Nmap."
 

Pricing and Cost Advice

"Checkmk is a fairly reasonably priced solution."
"The price of Checkmk is cheaper compared to other enterprise products."
"The product is affordable."
"I am using the free version of Nmap."
"It's an open-source solution. Commerically, only the support service is available."
"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."
"Nmap is an open-source and free product."
"The solution is free of cost."
"Nmap is an open-source product. You don't need a license to install it."
"The solution is free of cost, but there are specific services that we have to buy."
"The solution is open source so it is free."
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Top Industries

By visitors reading reviews
Computer Software Company
9%
Government
9%
Manufacturing Company
9%
Financial Services Firm
7%
Manufacturing Company
14%
Government
9%
University
9%
Retailer
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 Business9
Midsize Enterprise1
Large Enterprise11
 

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 do you like most about Nmap?
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 sca...
What is your primary use case for Nmap?
Nmap is used for network scanning to map the network, identify devices, and assess their status. It helps determine open ports and services running on a particular endpoint or server within an ente...
 

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: December 2025.
881,176 professionals have used our research since 2012.