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Icinga vs Nagios XI vs PRTG Network 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 Icinga is 3.3%, up from 2.5% 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 PRTG Network Monitor is 4.2%, down from 4.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software
 

Featured Reviews

Harrison Bulley - PeerSpot reviewer
A stable, scalable and cost-effective solution that helps with inbuilt scripts for easy modification
I think the software is quite good, but we have had problems with getting it to recognize certain areas and amend certain checks, where we needed so we would have to create backend scripts for those checks. Though, being open source, it has the support to create backend scripts, it would be better to have these scripts in-built.
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.
Noman-Saleem - PeerSpot reviewer
Detects suden changes but significant pricing concerns affect the effectiveness of network traffic troubleshooting
We use PRTG Network Monitor for monitoring traffic on interfaces and the behavior of network traffic. If there are sudden changes in traffic or any configuration issues, we can sort them out using PRTG. It's very helpful for troubleshooting and monitoring traffic utilization on our interfaces…

Quotes from Members

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

Pros

"The best thing about the solution is how it highlights errors, the issues, and what needs my attention. The solution directs me to areas that I should look for first."
"We have found the solution to be stable."
"The value of Icinga is that it has hundreds of plugins, so it's really easy to monitor pretty much anything."
"Macros and the ability to connect it to Google Maps are valuable features."
"This solution has a self-healing handler where if the service is down, it is automatically restarted."
"An affordable solution for small organizations to do basic network monitoring."
"I like the ability to amend and adjust things really easily, which is useful in a case where you could make it auto-discover and then set a template to say all of these applications or servers under this template have an automatic threshold set that you’d set up manually."
"It is really easy in Icinga to create your own plugin and integrate it without any fuss. And it works just perfectly fine."
"Nagios XI is stable."
"It's great for monitoring IT services infrastructure."
"BPI: It allows defining peripherals to map business criticality for efficient monitoring, as required."
"The solution's most valuable feature is its simplicity."
"The most useful aspect of this solution is the ability to customize it for the client agent."
"An excellent solution that is easy and intuitive to implement."
"Nagios is a custom API manager, and we can expose custom APIs for our integration. This is a great feature."
"The installation is no problem. I've installed Nagios several times."
"The up-to-date graphs and the history are very good."
"The most valuable features of PRTG Network Monitor are the threshold notification when certain traffic increases and goes beyond the defined threshold. The up and down status email notifications and other notifications are useful. Additionally, it is user-friendly, and customizable, and there are many features available."
"The solution has excellent redundant features."
"The remote probe feature in PRTG Network Monitor helps you monitor remote systems or your network at a lower cost than other solutions."
"The solution is scalable."
"PRTG Network Monitor is user-friendly and offers flexible alerting systems."
"The bandwidth monitoring is a very attractive feature, it can tell you the bandwidth utilization while it is attempting to connect to the host for feedback."
"It is easy when it comes to dependencies of devices, so if your router goes down, the three or four switches behind it will automatically be paused so that you don't get multiple alerts."
 

Cons

"Icinga’s automation could be improved."
"One of the areas that are frustrating is remote monitoring for more than one machine."
"Icinga is a complex solution that's hard to learn. It's a powerful product for monitoring, but new users will have a hard time figuring out what to do."
"In general, the product does not look good. However, it does what it is supposed to do. So, the improvements should focus on usability and UI."
"The tool currently fails to provide notifications to users."
"There is room for improvement in multi-tenancy. It's not perfect, not even really good. It's average, but it should be improved."
"I think the software is quite good, but we have had problems with getting it to recognize certain areas and amend certain checks, where we needed so we would have to create backend scripts for those checks. Though, being open source, it has the support to create backend scripts, it would be better to have these scripts in-built."
"One thing that Icinga lacks is the capability to create advanced and customized dashboards within the tool itself."
"We'd like to see more integration capabilities."
"It is really difficult to integrate Nagios XI with another system to generate logs and alert our management of failures in security infrastructure."
"The product's stability could be even better."
"The Configuration Wizard needs improvement, because not all vendors are present."
"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 product could be optimized to improve the administrative user experience via the Nagios Core Configuration (NCC) GUI module."
"The scalability of Nagios XI is scalable. However, it is not easy to do."
"The technical support is variable - sometimes I get answers, but most of my tickets go unanswered."
"We have had a few issues with the web elements, as far as the dashboard. With the dashboard, it has to be manually refreshed. Occasionally, we reboot the server, or at least web services, due to the web aspect."
"The free version only gives us 100 free sensors to use. It would be nice if there was double that."
"There seems to be a big jump from the basic scan to the really thorough scan. There is a big jump in the quantity of sensors it uses for certain things. One minute you might get ten and then the next you get 200. There seems to be a big jump between the two at times."
"Users need to buy the more expensive licenses if they expect to be able to scale."
"I've encountered a challenge in my functions, particularly in adding and printing."
"PRTG Network Monitor needs to enhance network performance monitoring."
"PRTG's application monitoring sensor is not strong."
"PRTG Network Monitor could improve interaction with customers by offering direct support involvement instead of just mail responses."
 

Pricing and Cost Advice

"The solution is cheap."
"It is cost-effective, and the return on investment can be very interesting because the price is low."
"This is an open-source solution with paid support."
"The product is inexpensive compared to other DBM products."
"It's an open-source solution."
"The solution is free to use."
"We're using the free version of Icinga."
"Even though Icinga's financial cost is low, it is an expensive product regarding the resources required to maintain and operate it."
"For the cost of the commercial product and support, and taking into account the open source characteristics of it, I believe it is difficult to a better value."
"The pricing is high with separate licensing for the product and support."
"As it is not an agentless tool, I think it is expensive."
"The licensing fees for this solution are approximately $3,000 USD per year."
"You can grow into the higher-priced scale as they learn how to utilize the features for Nagios XI."
"Nagios XI is open source."
"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."
"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."
"We are licensed for 2500 endpoints."
"I rate the licensing for PRTG Network Monitor an eight out of ten."
"The price is actually on the cheaper side. If you're going with the unlimited license code, it's very cheap compared to competitors unless you're going for something free, like Zabbix. But you get what you pay for, and it doesn't have the full suite of products or tools like SolarWinds or a ScienceLogic."
"PRTG Network Monitor is very expensive."
"We pay nothing for it. Its 100 sensors have allowed us to put a magnifying glass on some systems, providing an extra layer of detail. Therefore, our outgoing is nothing and our incoming is a lot of useful data that we can react to proactively."
"PRTG Network Monitor's price is a little high."
"We have unlimited devices and sensors, and it is a bit pricey, but we do have unlimited sensors. With all things considered the price is fine, related to the solution itself. PRTG Network Monitor is good value for money."
"We have an unlimited perpetual license, so we just pay support costs and it can scale throughout the organization."
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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
12%
Financial Services Firm
11%
Comms Service Provider
11%
Manufacturing Company
8%
Educational Organization
14%
Computer Software Company
13%
Financial Services Firm
11%
Manufacturing Company
8%
Educational Organization
21%
Computer Software Company
11%
Financial Services Firm
8%
Government
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What do you like most about Icinga?
The best thing about the solution is how it highlights errors, the issues, and what needs my attention. The solution ...
What is your experience regarding pricing and costs for Icinga?
It is cost-effective, and the return on investment can be very interesting because the price is low. If you want to i...
What needs improvement with Icinga?
There is room for improvement in multi-tenancy. It's not perfect, not even really good. It's average, but it should b...
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.
What is the best network monitoring software for large enterprises?
PRTG network monitor is one of the best tool i have ever used for the monitoring. It have auto discovery option. it a...
What do you like most about PRTG Network Monitor?
The tool is integrated with our email for the alerts.
What is your experience regarding pricing and costs for PRTG Network Monitor?
The pricing is in the middle. It's not too high, nor too low, but it's reasonable.
 

Comparisons

 

Also Known As

Icinga Cloud Monitoring
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Overview

 

Sample Customers

Puppet Labs, Audi, Spacex, Debian, Snapdeal, McGill, RIPE Network Coordination Centre
Nagios has over one million users globally, including AOL, DHL, McAfee, MCI, MTV, Yahoo!, Universal, Toshiba, Sony, Siemens, and JPMorgan Chase.
Jameson Bank, Sidnix, RungeICT, MedicalAnimal, Truck-lite, GamingGrids, The Covell Group, Forsythn County Schools, NetMass, Musgrove Park Hospital, Lanes Health, Columbia Southern University, Vodafone, Intrust Bank
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.