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Centreon vs Nagios XI vs OP5 Monitor 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:
 

Mindshare comparison

As of May 2025, in the Network Monitoring Software category, the mindshare of Centreon is 2.5%, down from 3.1% compared to the previous year. The mindshare of Nagios XI is 3.2%, down from 4.1% compared to the previous year. The mindshare of OP5 Monitor is 0.7%, down from 0.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software
 

Featured Reviews

Caulson Chua - PeerSpot reviewer
With fewer staff resources, we can identify and address issues before the system goes down
Centreon's most valuable features are preventative maintenance and cost-efficiency. Everything is monitored, and we get a log before the system fails. We have an opportunity to fix the issue and avoid downtime. The dashboard is user-friendly, and the solution provides good reporting and visibility. The layout is straightforward. You can click on the drop-down list to select the server you want. The anomaly detection feature helped us reduce our average resolution time by 30 minutes to an hour.
Amir  Said - PeerSpot reviewer
Effective alerting enhances network monitoring experience with an easy setup
We love Nagios XI due to the fact that JPS Web is very useful. JPS monitors the modem and performs switching, monitoring the computer, and performing switching. We implement some applications and traffic monitoring. The alerting system is very effective. For instance, if we have an alarm on some RAM storage if the traffic is cut or dropped.
Harish Venkateshappa - PeerSpot reviewer
Useful online resources, customizable, and highly effective monitoring
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. If there are corrupt files the data can be extracted from them. Anyone who wants to see the performance of memory usage, such as whether it's at 80 to 90 percent, can use this tool. However, other tools can provide this information in two minutes, this tool is more time-consuming and the report it provides is not very effective for practical use. When it comes to reports, the tool falls short. During a recent call, it was noted that while the company has distributed servers across the globe, only the master server can accommodate the reports and events, causing delays. If other servers experience issues, the team cannot view the reporting or tag things, such as for troubleshooting purposes. If this aspect was improved it would be an excellent tool.

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 most of its plug-ins are free."
"I really like the filtering capabilities of it. You can easily tell what's critical next to what's okay, the state of the services. It's very easy to get the whole picture quickly."
"For servers and for applications, it was very, very efficient."
"The customizable reports and dashboards are really flexible. We started this partnership with Centreon, when we were looking for a solution, because of the flexibility of the reporting. That's what we found to be most attractive in the solution. You can display the data as you want."
"Centreon's real-time monitoring, despite having some manual aspects, supports us in managing our operations effectively."
"We have all our tickets inside Centreon in real-time and can monitor a lot of ELP and CLN in real-time for application purposes."
"What I like most about Centreon is that it is very flexible and customizable, based on the user and/or business needs. Centreon is very flexible when it comes to monitoring parameters. We can use scripts found on the internet or scripts created by our infra/apps team. Also, the data visualization features are very simple and straightforward, yet very informative."
"The most valuable feature is the monitoring of servers and networks, because we have a lot of them and need to maintain control."
"I can monitor a software made in-house to software of bigger companies."
"Though I downplayed the administrative NCC GUI, this is by far the strongest aspect of the Nagios XI product."
"The most valuable feature is the dashboard, where I can have a single screen that provides a summary for hundreds of servers."
"This is a very good solution and it is simple to use, for any company."
"The solution has a lot of plugins and scripts integrated with it."
"You want to monitor a specific metric that nobody else has? You can do it even with the most basic of scripting skills, and you can always share it with the vast community of Nagios Exchange."
"The Script Module in Nagios is really easy to use and is really cost efficient."
"It is an open-source platform with valuable features for performance and stability."
"We can also observe whatever we want, and there are no limitations."
"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 API makes it pretty easy to integrate with any system."
"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 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."
 

Cons

"Improvements I would like to see include a discovery solution, better reports, and end-to-end monitoring."
"The Home view could be improved by adding customization functions that allow users to change the size of the widgets for a more uniform layout."
"Response times can be slow, often leaving us to resolve basic issues in-house."
"Sometimes, when the GUI and some of the search fields are being reset, and I return to the page, then I have to set them again. Therefore, some improvement on the UI and the filtering is needed."
"Centreon needs to improve the granularity of the data as well as the graphical data. It would also be better to if there was improvement to the filtering/grouping system as well as the creation of views."
"The problem with the reporting is you have to configure the report, and after that, you will have the same report every month, every week, every day. You have to sync it in order to have a great report."
"The most important issue is the capability to interconnect with other systems. It already exists for some of them. For example, the Stream Connector is something we use to populate data in another system. This kind of facility for connecting should exist for all products that it makes sense to have connected to a monitoring solution."
"Sometimes, Centreon does not show the status of services as updated, which should be addressed."
"The product could be optimized to improve the administrative user experience via the Nagios Core Configuration (NCC) GUI module."
"It can be quite difficult to know which drivers and agents to use when setting up."
"I would like to see support for notification via SMS."
"There's room for improvement in the visibility, and in the ability to extract information. Stuff like this should be more simple."
"We often need to develop custom plugins to get Nagios to work the way we want it to work because the features we need are not always available in Nagios."
"We'd like to see more integration capabilities."
"The product does not have SAP monitoring."
"The tool's AI model needs to be fixed."
"They need to improve the dashboard interface."
"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."
"We do not get performance reports properly."
"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."
"The user interface is not what we are used to these days, and should be improved."
 

Pricing and Cost Advice

"The solution has a free part and after that threshold, you will need to pay. For example, if you believe you can create an interesting map, most of the time, you will have to pay 10,000 Euros per year for having access to these components."
"In terms of licensing, you have to think through if the components that need licensing are really needed. For example, the Map module: If you don't need a map to be shown, I don't see a point in paying for those licenses, if you just use it a couple of times a month or a couple of times a week... You can use the Centreon free version and get the main features. The licensing part is, I would say, only for bigger customers who have the option to pay more and who really need those kinds of modules, fancy reports, etc."
"Open-source solutions like this can be very cost effective for an organization looking for a product that they can quickly implement, as there is no initial cost and there are no license renewal fees. However, it is important to take into consideration some of the related costs that may come along as needed, such as training, support, and product enhancements."
"They only sell four hour slots for support, so if you have just one question, then you need to pay for four hours. Or, you need to wait until you have enough questions to fill those four hours. They are not flexible in this."
"The solution is very effective, despite the low price."
"Centreon is always available to develop new plugins when needed. The most important thing is that their maintenance account yearly subscription fee includes the fact that they will maintain the new plugins that you requested them to deliver."
"The price is not too high. Licensing is driven by how many hosts you monitor, but because you can run the agentless version, you don't have to declare every host to Centreon, one at a time. That means you can drive your infrastructure supervision with a very low number of declared hosts."
"Their licensing model is really easy. You have one license and you have access to all the features, compared to other tools where you have to purchase add-ons."
"For our country in North Africa, it's expensive and we could purchase another solution for that price. But it's a reasonable price if we're speaking in international terms."
"Nagios XI is an expensive solution."
"This solution is very expensive, at approximately $5,000 USD when I purchased it, which is why I haven't upgraded my version in several years."
"The pricing is high with separate licensing for the product and support."
"Licensing costs are reasonable."
"The pricing is really cost efficient. The licensing is perpetual and can be renewed very easily."
"Nagios XI is open source."
"We are using the free version of this solution."
"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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Comparison Review

it_user174738 - PeerSpot reviewer
May 31, 2015
Nagios vs. Zabbix vs. PRTG vs. Spiceworks vs. Solarwinds Network Performance Monitor
I have researched a quite a few network monitoring tools which can be used for various monitoring purposes of not only the servers, but the intermediate routers as well. There are majorly three types of these softwares. Ones which are completely open-source, you can do almost anything you want…
 

Top Industries

By visitors reading reviews
Computer Software Company
19%
Financial Services Firm
11%
Government
10%
Comms Service Provider
7%
Educational Organization
47%
Computer Software Company
8%
Financial Services Firm
6%
Manufacturing Company
5%
Government
16%
Computer Software Company
13%
Financial Services Firm
10%
Aerospace/Defense Firm
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

Questions from the Community

What do you like most about Centreon?
Centreon's most valuable features are preventative maintenance and cost-efficiency. Everything is monitored, and we g...
What needs improvement with Centreon?
I have certain concerns with Centreon, such as being unable to set downtime for multiple devices at once due to the l...
What do you like most about Nagios XI?
It is an open-source platform with valuable features for performance and stability.
What is your experience regarding pricing and costs for Nagios XI?
The pricing for the Nagios XI product is good and better than other solutions. I would give it a four or five.
What needs improvement with Nagios XI?
The user interface needs improvement. Many tools have poor user interfaces, making them hard to manage and navigate.
Ask a question
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Comparisons

 

Overview

 

Sample Customers

Airbus, Bollore, BT, Canal Plus, Kuehne Nagel, Limagrain, LVMH, Oberthur Technologies, Orange, Darty, Addax Petroleum, Plastic Omnium, Auchan, Valeo, Saint Gobin, Clarins, Hugo Boss, JC Decaux, French Government (Defense, Justice, Environment, Agriculture), OptiComm, Thales, Zeiss.
Nagios has over one million users globally, including AOL, DHL, McAfee, MCI, MTV, Yahoo!, Universal, Toshiba, Sony, Siemens, and JPMorgan Chase.
Svenska Spel, Carus, VGL, Tele2, Viking Line, Clas Ohlson, Vanderlande, Försäkringskassan
Find out what your peers are saying about Zabbix, Auvik, Datadog and others in Network Monitoring Software. Updated: April 2025.
852,649 professionals have used our research since 2012.