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Nagios XI vs PRTG Enterprise Monitor comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Oct 10, 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

Nagios XI
Ranking in Network Monitoring Software
26th
Average Rating
8.0
Reviews Sentiment
6.8
Number of Reviews
58
Ranking in other categories
Server Monitoring (14th), IT Infrastructure Monitoring (28th), Cloud Monitoring Software (26th)
PRTG Enterprise Monitor
Ranking in Network Monitoring Software
32nd
Average Rating
7.4
Reviews Sentiment
6.6
Number of Reviews
11
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of January 2026, in the Network Monitoring Software category, the mindshare of Nagios XI is 2.3%, down from 3.4% compared to the previous year. The mindshare of PRTG Enterprise Monitor is 0.6%, up from 0.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software Market Share Distribution
ProductMarket Share (%)
Nagios XI2.3%
PRTG Enterprise Monitor0.6%
Other97.1%
Network Monitoring Software
 

Featured Reviews

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.
Moshiur-Rahman Khan - PeerSpot reviewer
CEO at IOPoint.com
Offers perfect real-time bandwidth monitoring and SNMP functionality
The licensing policy needs to change. The current model requires customers to purchase a minimum of two thousand licenses, which is not flexible for all customers. They should consider a more flexible licensing approach. Furthermore, alignment with customer expectations rather than offering numerous features that are not requested would be beneficial.

Quotes from Members

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

Pros

"The alerting system is very effective."
"It's a monitoring agent. It's designed to do one thing. Its most valuable feature is its monitoring."
"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 technical support is good."
"The installation is no problem. I've installed Nagios several times."
"The solution is pretty stable."
"The most valuable feature is the monitoring of processes."
"Nagios XI is a simple monitoring tool with performance management."
"If an event is detected, such as a resource running low on storage or RAM, the product will notify you via email. Upon receiving the notification, action must be taken to address and resolve the issue. The feature I find most effective is its comprehensive nature. It's like having a permanent eye monitoring the network and all its nodes. Instead of manual monitoring, it detects anomalies automatically and alerts us accordingly."
"The solution offers perfect real-time bandwidth monitoring and SNMP functionality."
"The product is easy to use and you don't need to have any training. You can use it even if you don't have an IT background."
"I would recommend PRTG Enterprise Monitor to others as it works well with Android devices, and you can try the free version before purchasing."
"It can identify downtimes and disruptions."
"The product's most valuable feature is network analysis."
"The product is easy to understand."
"PRTG is good and very easy to use."
 

Cons

"They need more documentation for the plugins."
"Technical support is an area that needs improvement. It is not available 24/7."
"The product's stability could be even better."
"We'd like to see more integration capabilities."
"I would like a much easier GUI so that I can delete events and logs, which will free up a lot of space."
"The user interface needs improvement."
"The product does not have SAP monitoring."
"Nagios XI can improve network and hardware monitoring, these parameters should be simplified to allow usage for monitoring. Additionally, if there was automatic reporting it would be helpful."
"When it comes to dashboard customization in PRTG Enterprise Monitor, there are not too many options, and I think that would not be a strong point for PRTG, but for our use cases, we do not really need that kind of customization."
"They should work on minimizing false positives by sending alerts promptly and confirming errors with minimal troubleshooting requirements."
"The solution could be improved by introducing security features similar to those available in Teams, as the current version only monitors devices and does not integrate IoT or OT devices."
"There could be more security features included in PRTG Enterprise Monitor."
"In my opinion, one area that could be improved in PRTG Enterprise Monitor is the capability to send SMS notifications. Notifications are crucial for alerting us to areas that require attention."
"The solution could be improved by introducing security features similar to those available in Teams, as the current version only monitors devices and does not integrate IoT or OT devices."
"The solution could be improved by including a processing monitor, possibly with a language interface like Lua, allowing for writing custom sensors and processing outcomes of inputs."
"The support must be improved."
 

Pricing and Cost Advice

"Nagios Core does not have any payment, but Nagios XI requires payment for the license."
"The pricing is really cost efficient. The licensing is perpetual and can be renewed very easily."
"You can grow into the higher-priced scale as they learn how to utilize the features for Nagios XI."
"Nagios XI is an expensive solution."
"It is good to contact experts for advice about what is the best solution for your specific infrastructure and enterprise."
"The pricing is high with separate licensing for the product and support."
"Nagios XI is open source."
"We are using the free version of this solution."
"PRTG Enterprise Monitor's pricing is reasonable."
"The solution is affordable."
"PRTG Enterprise Monitor is an expensive product."
"The pricing is $2,149 for software without maintenance, and licenses are sold in the minimum bundle of 500 interfaces."
"I rate the product's pricing an eight to seven out of ten."
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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
Financial Services Firm
11%
Computer Software Company
11%
Manufacturing Company
8%
Government
7%
Educational Organization
11%
University
10%
Healthcare Company
10%
Computer Software Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business22
Midsize Enterprise17
Large Enterprise21
By reviewers
Company SizeCount
Small Business7
Midsize Enterprise2
Large Enterprise2
 

Questions from the Community

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 monitoring our server performance, including CPU, memory, data, and services runnin...
What do you like most about PRTG Enterprise Monitor?
If an event is detected, such as a resource running low on storage or RAM, the product will notify you via email. Upon receiving the notification, action must be taken to address and resolve the is...
What is your experience regarding pricing and costs for PRTG Enterprise Monitor?
I would rate the pricing of PRTG Enterprise Monitor maybe a six. I think a six is fine, as it is reasonable and not expensive.
What needs improvement with PRTG Enterprise Monitor?
When it comes to dashboard customization in PRTG Enterprise Monitor, there are not too many options, and I think that would not be a strong point for PRTG, but for our use cases, we do not really n...
 

Overview

 

Sample Customers

Nagios has over one million users globally, including AOL, DHL, McAfee, MCI, MTV, Yahoo!, Universal, Toshiba, Sony, Siemens, and JPMorgan Chase.
Information Not Available
Find out what your peers are saying about Nagios XI vs. PRTG Enterprise Monitor and other solutions. Updated: December 2025.
881,114 professionals have used our research since 2012.