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Checkmk vs Nagios Core comparison

Why PeerSpot?
 

Comparison Buyer's Guide

Executive SummaryUpdated on Oct 9, 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
17th
Ranking in IT Infrastructure Monitoring
26th
Average Rating
8.4
Reviews Sentiment
7.3
Number of Reviews
9
Ranking in other categories
Server Monitoring (10th), Cloud Monitoring Software (23rd)
Nagios Core
Ranking in Network Monitoring Software
19th
Ranking in IT Infrastructure Monitoring
16th
Average Rating
8.2
Reviews Sentiment
7.3
Number of Reviews
51
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of September 2026, in the Network Monitoring Software category, the mindshare of Checkmk is 1.3%, down from 3.8% compared to the previous year. The mindshare of Nagios Core is 1.3%, down from 2.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software Mindshare Distribution
ProductMindshare (%)
Checkmk1.3%
Nagios Core1.3%
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.
HY
Senior System Administrator at Interactive Group
Monitoring solution provides comprehensive visibility across IT infrastructure
The good thing about Nagios Core is it covers everything. Everything in the IT domain, you can monitor anything. You can even monitor printers, the ports of printers, Core workstations, and storage. You can monitor the workflow Core and the utilization of computes. If you want to grasp everything of your IT equipment on a single interface, you can use Nagios. It's the best one. It provides dashboards, and you can also configure your emails and alerts with it. If something is critical, you can configure it to notify via emails. It has a very handy dashboard, providing live alerts and visibility for everything.

Quotes from Members

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

Pros

"It's versatile, scalable, and easier to use compared to other solutions like Nagios and OMD."
"The most valuable features of Checkmk are its resource monitoring, infra monitoring, and log factor configuration."
"Overall, from one to ten, I rate Checkmk a nine."
"We can monitor multiple sites using the product."
"Checkmk was built on a platform that was user-friendly, and I could build my charts easily."
"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."
"I really like the auto-discovery feature."
"The alerting system in Checkmk really works properly."
"Nagios monitors our servers, so we know if anything goes wrong and can solve the problem before it happens."
"Nagios Core is very configurable. Whatever you want, you can do it."
"Key features include the GUI interface, its notification capabilities, and the real-time reporting."
"We mostly use Nagios Core to integrate with Python and Bash Script."
"The most valuable feature is the performance parameters of the system."
"Our customers like that Nagios Core is an open source solution. It can be customized to our customers' specific needs."
"Before we implemented Nagios, we did not know which servers were up or down until a customer told us, and now I can see trends over time and it gives me perspective of what needs to be improved so we are able to work proactively as opposed to reactively."
"I like that it's very simple to install, easy to manage and deploy, and easy to use for monitoring."
 

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."
"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."
"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."
"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."
"I think that the integration and the exporting of the data collected are areas where Checkmk lacks but should try to improve the most."
"Checkmk does not allow running scripts at varying intervals."
"We're using the free version, which limits us in terms of the things that we can do."
"It is a bit slow due to latency."
"The core version is no match for the XI version."
"It would be nice if the company offered a sales or contract manager that was dedicated to our company so that we would have some sort of link to Nagios, and if we had issues or questions, we'd be able to contact them directly."
"This solution is not scalable at all. If you want to add an AI, or if you wanted to monitor different types of metrics, you won't get the most out of it."
"Some of the reporting functionality is a bit basic and configuration is a chore although by the use of NagiosQL this can be made a lot easier."
"Default interface is clunky and slow."
"This is the open source product, so it's a toolkit rather than a complete solution."
 

Pricing and Cost Advice

"The price of Checkmk is cheaper compared to other enterprise products."
"Checkmk is a fairly reasonably priced solution."
"The product is affordable."
"Nagios Core is free to use."
"Nagios Core is a cheap solution."
"It's free."
"The product is cheaply priced."
"We have saved a lot of time, money, and effort in reducing disaster times, which is owed to Nagios quick alerting."
"We are using the free version."
"Nagios Core is an open source solution, and there are no licensing fees."
"The enterprise version has technical support. The version we are using is free."
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Top Industries

By visitors reading reviews
Comms Service Provider
10%
Manufacturing Company
10%
Government
9%
Financial Services Firm
7%
Comms Service Provider
10%
Manufacturing Company
8%
Financial Services Firm
7%
Outsourcing Company
7%
 

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 Business20
Midsize Enterprise11
Large Enterprise24
 

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 experience regarding pricing and costs for Nagios Core?
Nagios Core is a free and open-source product. We don't charge for the product itself, but we charge for the man-hour costs related to installation, configuration, ongoing operation, and maintenance.
What needs improvement with Nagios Core?
The dashboard should be improved. It's very simple. I don't have a very clear or specific suggestion. You can change the skin of the dashboard, however, it's good for me.
What is your primary use case for Nagios Core?
I was a senior system administrator. I've been using Nagios Core for more than ten years now. It can be used to monitor hosts, such as machines, and monitor services of any kind. I'm using it to mo...
 

Comparisons

 

Overview

 

Sample Customers

Information Not Available
Airbnb, Cisco, PayPal, FanDuel
Find out what your peers are saying about Checkmk vs. Nagios Core and other solutions. Updated: September 2026.
913,806 professionals have used our research since 2012.