No more typing reviews! Try our Samantha, our new voice AI agent.

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 April 2026, in the Network Monitoring Software category, the mindshare of Icinga is 1.5%, down from 3.3% compared to the previous year. The mindshare of Nagios XI is 2.4%, down from 3.3% compared to the previous year. The mindshare of PRTG Network Monitor is 3.3%, down from 4.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software Mindshare Distribution
ProductMindshare (%)
PRTG Network Monitor3.3%
Nagios XI2.4%
Icinga1.5%
Other92.8%
Network Monitoring Software
 

Featured Reviews

Harrison Bulley - PeerSpot reviewer
Senior Infrastructure Engineer at Net Consulting
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.
Emmanuel Appiah Boateng - PeerSpot reviewer
Network and Security Engineer at a educational organization with 1,001-5,000 employees
Simplifies setup and requires user interface enhancement
Nagios XI is easy to install, which sets it apart from other open-source solutions I've tried. Typically, setting up a monitoring system on Linux involves cloning files from GitHub, building it, and installing many dependencies, but with Nagios XI, it wasn't like that. Nagios XI simplifies our setup and reduces the time spent configuring monitoring tools.
madhan kumar hs - PeerSpot reviewer
software engineer at Capgemini
Alerting precision has reduced incident response times and improved department-level network visibility
The auto-pause sensor during the maintenance window is good without any false alerts, and it prevents me from getting flooded with alerts during planned maintenance, helping department heads understand their own network usage better. It has reduced incident response time by giving clearer ownership of each alert, ensuring alerts go to the proper recipient. SNMP testers and auto-pause are among the best features of PRTG Network Monitor, which is particularly useful for different departments such as HR and finance, where alerts can be filtered accordingly. The alerting features and dashboard of PRTG Network Monitor are very helpful, especially in our industry. However, the dashboard can look cluttered on smaller screens, which is one negative aspect. PRTG Network Monitor has impacted us positively; we have stopped getting flooded with alerts during planned maintenance or unplanned outages. Compared to others, this gives specific alerts very quickly and helps department heads understand their own network usage better, thus reducing incident response time so that each alert has clear ownership.

Quotes from Members

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

Pros

"The ability to customize scripts and build your own queries to request information from the infrastructure elements you want to monitor. This level of personalization and customization is highly appreciated."
"There's a module called Icinga Director, which helps us configure the product using an intuitive interface through clicks instead of creating a text configuration. It's very helpful for us."
"We have found the solution to be stable."
"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."
"Macros and the ability to connect it to Google Maps are valuable features."
"People should know that it is simple and advanced."
"Icinga has multiple automation and integration features. There is an API for everything and a web UI for configurations. The APIs enable you to automate tasks in Icinga. We can also use plugins to talk to the API. The Icinga Director talks to a database in the background, and you can import settings from the CMDB to all systems in Icinga."
"I use it for monitoring infrastructure and it was very good for that issue."
"Since the cost is zero and it can use a fairly cheap server to run on the ROI is nearly immediate."
"The features I've found the most useful are the plug-ins, the fact that you can connect almost everything to it. That's very useful."
"The ROI is very good."
"All of them, but mainly: Highly-efficient server performance monitoring engine Configuration wizards Infrastructure management Configuration snapshot."
"Nagios allows us to configure any device so that we can send pager alerts when people don't have access to emails, and it also allows us to schedule downtime and maintenance."
"The most valuable features of Nagios XI are you can customize it based on your use case and requirements. It is flexible and easy to integrate with our systems. You can customize the solution by adding additional features using code."
"It's very easy to install it and manage it with Nagios XI's interface."
"BPI: It allows defining peripherals to map business criticality for efficient monitoring, as required."
"We have seen an ROI as it allows us to avoid downtime."
"Nice product with an easy interface to use and a large variety of sensors."
"It is user-friendly. It is easy to set up health checks within PRTG and use scans. It is like a self-service tool, and anyone can configure their own settings within PRTG."
"The most valuable features of PRTG Network Monitor are bandwidth utilization, user-friendliness, all past report simple retrievals, and timeout features."
"The most valuable feature of PRTG Network Monitor is its ease of use."
"Every monitoring session features similar capabilities."
"The alerting is the most valuable feature. I also like the iPhone app. I get alerts in an email on the iPhone app."
"It has provided us with early warning for potential issues and has stopped potential downtime before it occurs."
 

Cons

"Scalability is problematic. If you have a stable environment it's good, but if the environment is growing, I had some problems with Icinga."
"There is room for improvement in multi-tenancy. It's not perfect, not even really good. It's average, but it should be improved."
"It is not really adequate for our current needs. It causes additional issues which we have to work around and takes us time that a better solution would not."
"It needs Trap SNMP. I saw the documentation for Zabbix, that it has its own built-in product which handles SNMP traps, and there's nothing similar in Icinga or Nagios. I think this feature is most important for me."
"At this time, the layout of the website is a bit difficult. It should be more user-friendly for changing the background and logos."
"One thing that Icinga lacks is the capability to create advanced and customized dashboards within the tool itself."
"One of the areas that are frustrating is remote monitoring for more than one machine."
"Network Discovery capabilities would be extremely helpful."
"They need to develop a better integration with a common ticketing system will be great."
"Nagios XI can improve its GUI for users with a new look."
"Initially, we encountered problems during the setup as some errors were noted due to a few prerequisites not being fulfilled and having some configuration files to edit and plugins to add."
"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."
"Technical support is very good but is very expensive. It is becoming more and more expensive just like the upgrade."
"They need more documentation for the plugins."
"The pricing has recently risen. I know they've changed what is covered under the license, however, it doesn't change the way we use it and adds nothing to our experience, and yet we now have to pay more."
"There are stability issues if you have a large number of hosts and services."
"We've had some issues previously with the performance of the sensors. We tend to deploy quite a bit of WMI, which is quite processor-intensive, and we've found that that impacts the sensors quite a bit."
"This solution is a good product so far, but I haven't been using it long enough to know how it could be improved."
"PRTG can fix that, but it's only good for small workloads."
"Dashboards can look cluttered on smaller screens, and the UI can feel crowded when there are hundreds of sensors in one group."
"We would like more cloud native sensors for AWS, Azure, Google Cloud, etc. A lot of businesses are moving in that direction, so having something where we can pull performance stats out of these cloud services would be great for us."
"If they are looking for complex reports, I will say stay away from this product."
"The remote probes are okay. I think that there could be more sensors available, especially with newer technologies coming along."
"With custom sensors, there is a lot of work which needs to be done in the background, just for it to be tailor-made for the specific thing that we are actually monitoring. We take a lot of time with the custom sensors. I would like to see the customer sensor be more robust and a bit more varied."
 

Pricing and Cost Advice

"It is cost-effective, and the return on investment can be very interesting because the price is low."
"The solution is free to use."
"The solution is cheap."
"Even though Icinga's financial cost is low, it is an expensive product regarding the resources required to maintain and operate it."
"The product is inexpensive compared to other DBM products."
"It's an open-source solution."
"We're using the free version of Icinga."
"This is an open-source solution with paid support."
"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."
"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."
"Licensing costs are reasonable."
"Nagios XI is an expensive solution."
"Nagios XI is open source."
"It is good to contact experts for advice about what is the best solution for your specific infrastructure and enterprise."
"You can grow into the higher-priced scale as they learn how to utilize the features for Nagios XI."
"PRTG is now available as PRTG Enterprise Monitor, and the price varies depending on the total number of sensors the customer buys"
"There is a license to use PRTG Network Monitor and it is annually."
"If you're looking for a cost effective software I’d suggest this product."
"If you are not too sure about it, try the free version. Then, if you like it, you can go to the paid version and roll it out."
"It's a cost-efficient tool."
"The price of PRTG Network Monitor is reasonable."
"The pricing is okay and it is cheaper than some competing products."
"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."
report
Use our free recommendation engine to learn which Network Monitoring Software solutions are best for your needs.
885,376 professionals have used our research since 2012.
 

Comparison Review

it_user174738 - PeerSpot reviewer
IT Developer at a tech services company with 51-200 employees
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
Educational Organization
15%
Comms Service Provider
11%
Financial Services Firm
8%
Manufacturing Company
8%
Financial Services Firm
9%
Computer Software Company
9%
Manufacturing Company
7%
Government
6%
Computer Software Company
9%
Comms Service Provider
8%
Financial Services Firm
8%
Government
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise4
Large Enterprise7
By reviewers
Company SizeCount
Small Business22
Midsize Enterprise17
Large Enterprise21
By reviewers
Company SizeCount
Small Business59
Midsize Enterprise19
Large Enterprise50
 

Questions from the Community

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 is your primary use case for Icinga?
We use Icinga as a monitoring solution to monitor customers' infrastructures. We work as a managed service provider, ...
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 your primary use case for Nagios XI?
I normally use Nagios XI for our servers. It's not particularly used for network equipment, however, I use it for mon...
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 is your experience regarding pricing and costs for PRTG Network Monitor?
The pricing was higher at the beginning, but the recurring licensing cost is affordable and reasonable. Overall, the ...
What needs improvement with PRTG Network Monitor?
The reporting features look very technical and that can be improved. If they can change the report so everyone can un...
 

Comparisons

 

Also Known As

Icinga Cloud Monitoring
No data available
No data available
 

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, Datadog and others in Network Monitoring Software. Updated: March 2026.
885,376 professionals have used our research since 2012.