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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 July 2025, in the Network Monitoring Software category, the mindshare of Centreon is 2.4%, down from 3.0% compared to the previous year. The mindshare of Nagios XI is 3.2%, down from 3.9% 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

Simon KONAN - PeerSpot reviewer
Plug-ins are free but it has limitations in sending out information to users
The issue my company has with the tool stems from the fact that it didn't give an on-time response to us. The product collects the information, but it fails to send them via SMS, WhatsApp or Telegram. The solution can be used if you want to get email notifications, which is not good for our company because if someone is not in front of their desktop, you can't receive information about an equipment or LAN that is down.
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 is the ability to build an abstraction of service visualization. You can add services to an entity called Business Activities and you can see the state of these activities."
"The most valuable feature of the solution is that most of its plug-ins are free."
"What we like about it is that, whereas with Nagios, by design, if you have five or six data centers, you have to open five or six web pages to see what's going on, In Centreon, this is all included in one page, a single site, one dashboard. You don't have to jump from one specific dashboard to the other."
"Centreon helps me detect where the problem is quickly. When we resolve a problem quickly, this lowers our overall costs."
"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."
"We have the business activity monitoring, the map, and the MBI modules and they are all very good."
"Valuable features include the ability to schedule downtime, intensity or depth of monitoring which it does, different plugin packs, Centreon MAP, Centreon BI."
"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."
"Nagios allows us to configure any device so that we can send pager alerts when people don't have access to emails. It also allows us to schedule downtime and maintenance."
"I can monitor a software made in-house to software of bigger companies."
"We love Nagios XI due to the fact that JPS Web is very useful."
"Nagios is a custom API manager, and we can expose custom APIs for our integration. This is a great feature."
"The technical support is good."
"I can monitor a phone on a desk to very big servers of any company."
"The most valuable feature is the monitoring of processes."
"The solution's most valuable feature is its simplicity."
"The API makes it pretty easy to integrate with any system."
"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."
"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."
"We can also observe whatever we want, and there are no limitations."
"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."
"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."
 

Cons

"I would like to see more plugins. That is something it needs. There is also room for improvement through dynamic thresholds, or self-discover thresholds. I would also like to see a discovery feature that could map the whole network environment and automatically suggest things."
"Centreon supports officially 10,000 services per poller. That is not much for larger customers, because this limit is reached very quickly. We use it with three times the limit without any problems, but Centreon says, "Okay, we are only supporting it with 10,000 services." We are aware that increasing the limit has different impacts because they need to support it. However, for most customers, it would be be very good if they could increase the limit of services."
"Release management and quality of testing need improvement, because with each major upgrade we have many issues coming in. Then, it takes several minor upgrades to get rid of them."
"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."
"Currently, we have to go through all of the different templates and take a look at how the template is configured, and how specific parameters may change across different templates with different precedents, megatons, etc. It's a lot of work and involves trial and error. I wish they could simplify the process."
"Improvements I would like to see include a discovery solution, better reports, and end-to-end monitoring."
"I would like to see a better UI, one which is more responsive."
"This solution lacks service monitoring in the cloud."
"I would like to see support for notification via SMS."
"The PNP4Nagios plugin not working easily with XI is an issue for me, because some open source monitoring plugins do not work out of the box. But in the end, you learn to live with it."
"The Configuration Wizard needs improvement, because not all vendors are present."
"The interface could be more user-friendly."
"They need more documentation for the plugins."
"I would like to be able to extend it to all of our data centers, whether they are in the cloud or not. It would be helpful if I could connect everywhere."
"The tool's AI model needs to be fixed."
"I would like to see more customization in the network map because it is a bit tricky to use it."
"We do not get performance reports properly."
"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."
"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."
"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."
"The user interface is not what we are used to these days, and should be improved."
"They need to improve the dashboard interface."
 

Pricing and Cost Advice

"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."
"Centreon is an open source product. Thus, there is no need for licensing."
"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."
"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."
"You purchase a package. You have a support contract (there is also a platinum support contract) and it is per module. That means you have to pay, e.g., for the MBI module or the BAM module. Or, if you want to save a lot of money, you can pay for IMP, which is the complete package."
"The tool is cheaply priced."
"For more complex tasks, we use prepaid support days and ask Centreon to come onsite."
"The pricing is acceptable."
"You can grow into the higher-priced scale as they learn how to utilize the features for Nagios XI."
"We are using the free version of this solution."
"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."
"Nagios XI is open source."
"The pricing is really cost efficient. The licensing is perpetual and can be renewed very easily."
"The licensing fees for this solution are approximately $3,000 USD per year."
"Nagios Core does not have any payment, but Nagios XI requires payment for the license."
"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."
"OP5 has a very low price as a solution, compared to many other solutions out there."
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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
18%
Financial Services Firm
11%
Government
8%
Comms Service Provider
7%
Educational Organization
14%
Computer Software Company
13%
Financial Services Firm
11%
Manufacturing Company
8%
Government
17%
Computer Software Company
12%
Manufacturing Company
10%
Financial Services Firm
10%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

Questions from the Community

What is your experience regarding pricing and costs for Centreon?
Centreon's pricing is not very expensive. Initially, I rated it seven, but corrected to five out of ten.
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 is your primary use case for Centreon?
We are using Centreon for monitoring devices, both LAN and WAN devices. There are subsidiaries for my company, so if ...
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, SolarWinds and others in Network Monitoring Software. Updated: July 2025.
860,825 professionals have used our research since 2012.