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Checkmk vs OP5 Monitor comparison

 

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
8th
Ranking in IT Infrastructure Monitoring
13th
Average Rating
8.4
Reviews Sentiment
7.3
Number of Reviews
9
Ranking in other categories
Server Monitoring (6th), Cloud Monitoring Software (12th)
OP5 Monitor
Ranking in Network Monitoring Software
72nd
Ranking in IT Infrastructure Monitoring
53rd
Average Rating
8.6
Reviews Sentiment
4.4
Number of Reviews
7
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of July 2025, in the Network Monitoring Software category, the mindshare of Checkmk is 3.9%, up from 2.2% compared to the previous year. The mindshare of OP5 Monitor is 0.7%, down from 0.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software
 

Featured Reviews

Paolo Sala - PeerSpot reviewer
A reasonably priced tool for system and application monitoring
The main room for improvement is in the solution's presentation and the integration area. In our company, we use the integration capabilities from ServiceNow. We also have another big monitoring solution in place in our company, which is Dynatrace. At the moment, there doesn't exist an out-of-the-box integration for Dynatrace. 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 only implementation of Checkmk that allows high availability is the virtual appliance that has the option for the availability of a different box. Otherwise, you have to find a way to implement it manually with some custom solution, which could be an improvement.
Sumanth Arshanapally - PeerSpot reviewer
Monitoring ease and cost-saving benefits enhance operational efficiency
The monitoring in OP5 Monitor is very easy because we can directly use custom plugins. We can write custom scripts and use those scripts directly. It's very low cost, open, and the dashboards are easy to see. We can extract the reports easily, and this is very easy to compare. Real-time monitoring in OP5 Monitor provides data every one minute or every five minutes, enabling us to get live data from the last one minute or last five minutes. OP5 Monitor gave us proper server availability, so we can always check whether a server goes down or the server CPU and memory decreases. Before reaching a particular bottleneck situation, we identified and fixed the issue, which helped us from a cost-saving business perspective. It helped us avoid application downtime.

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."
"Overall, from one to ten, I rate Checkmk a nine."
"The most valuable features of Checkmk are its resource monitoring, infra monitoring, and log factor configuration."
"The initial setup of Checkmk was easy...It is a very stable solution."
"I really like the auto-discovery feature."
"Checkmk helps me compare data and foresee issues."
"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."
"It monitors and continuously tests everything that is of importance to you and your users. It could be everything from monitoring disk space to CPU usage to memory. It could include determining if the response time in your e-commerce platform is quick enough, or whether you have too many bounces from some of the pages on your website. You want to monitor anything that could cost you money or time or resources. You can do that with this system. It's very flexible."
"OP5 Monitor is a great choice due to its being built on an open-source monitoring tool and provides ample opportunity for customization based on specific support requirements. It is also user-friendly and easy to manage with a wide range of plugins available for use. In comparison to other enterprise tools, such as Micro Focus, OP5 Monitor stands out for its features and cost-effectiveness, making it the best tool in the market. Customization is one of the key strengths of the tool and provides a lot of capabilities. Additionally, it is easy to find support and plugins for the tool through online resources."
"The API makes it pretty easy to integrate with any system."
"With limited hardware or a virtual machine, you can address a huge network, hundreds of thousands of elements that need to be monitored. Other commercial software is not on that level."
"The best feature is that it is very relatable, stable, and scalable. The logger is a part of the software, but it's not the most important point of it."
"We can also observe whatever we want, and there are no limitations."
 

Cons

"In Checkmk, the documentation can probably be improved a bit more."
"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."
"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 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."
"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."
"It is easy for tech-savvy people, but newcomers might find it intimidating."
"IT environments today are in constant flux. This is driven by the newer cloud technologies such as Kubernetes and Docker, etc. The whole Nagios-based monitoring system that OP5 is created on top of, is based on a host-service model. There is a need for a strategy on what to do with more dynamic environments. There is some cool stuff going on in that direction."
"The solution is useful for tweaking. However, there have been some negative experiences, such as limited report capabilities. The only report available is in PDF format, making it difficult for teams managing multiple servers to extract data in Excel format. The speaker recommends that the team improve the report capabilities to better serve users."
"We do not get performance reports properly."
"OP5 Monitor could include application monitoring in addition to infrastructure monitoring. If application business transactions were monitored, it would be helpful."
"They need to improve the dashboard interface."
"The user interface is not what we are used to these days, and should be improved."
"OP5 lacks some visualization, a feature that makes some other products nice. Op5 is built for purpose, which is fine, but if you compare it with some new products, the visualization is not so appealing, especially for management... If you don't need fancy visualizations, OP5 is fine."
 

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."
"OP5 has a very low price as a solution, compared to many other solutions out there."
"It was not expensive. And because it's less demanding in terms of hardware, you don't have to pay for another SQL or other database license, and you can have a huge installation on one machine..."
"The cost of the license and support are separate. If you want platinum call support, it will cost more than a regular call. I did not opt for it, as it is an additional cost."
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Top Industries

By visitors reading reviews
Computer Software Company
13%
Government
9%
Manufacturing Company
9%
Financial Services Firm
8%
Government
19%
Manufacturing Company
11%
Financial Services Firm
9%
Computer Software Company
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What do you like most about Checkmk?
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.
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...
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Comparisons

 

Overview

 

Sample Customers

Information Not Available
Svenska Spel, Carus, VGL, Tele2, Viking Line, Clas Ohlson, Vanderlande, Försäkringskassan
Find out what your peers are saying about Checkmk vs. OP5 Monitor and other solutions. Updated: July 2025.
863,641 professionals have used our research since 2012.