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Nagios Fusion vs PRTG Network Monitor comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Mar 29, 2026

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 Fusion
Ranking in IT Infrastructure Monitoring
73rd
Average Rating
8.2
Reviews Sentiment
7.8
Number of Reviews
4
Ranking in other categories
No ranking in other categories
PRTG Network Monitor
Ranking in IT Infrastructure Monitoring
5th
Average Rating
8.2
Reviews Sentiment
7.0
Number of Reviews
113
Ranking in other categories
Network Monitoring Software (6th), Cloud Monitoring Software (7th)
 

Mindshare comparison

As of October 2026, in the IT Infrastructure Monitoring category, the mindshare of Nagios Fusion is 0.5%, up from 0.3% compared to the previous year. The mindshare of PRTG Network Monitor is 3.0%, down from 4.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
IT Infrastructure Monitoring Mindshare Distribution
ProductMindshare (%)
PRTG Network Monitor3.0%
Nagios Fusion0.5%
Other96.5%
IT Infrastructure Monitoring
 

Featured Reviews

SI
Operation Director at Digital Pulse Sdn Bhd
A suitable choice for unified and efficient infrastructure monitoring across diverse environments providing user-friendly GUI, cost-effectiveness, and versatility
We use it for this specific client, they've deployed multiple instances of it across various locations to facilitate monitoring. To effectively monitor their infrastructure, it seems necessary to implement additional monitoring solutions for all three types of devices they have Nagios Fusion…
MC
Senior consultant at Cambridge Institute of Technology
Has reduced troubleshooting time and improved issue detection through sensor alerts and team collaboration
PRTG Network Monitor can be improved because the dashboard themes feel outdated. It should be updated to a newer version for the new Gen Z customers. The notification sound options are limited unless customized. Restarting probes after Windows updates is necessary, and there should be some kind of automatic restart. The initial auto-discovery added too many unnecessary sensors, so auto-discovery should only take the necessary sensors into consideration.

Quotes from Members

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

Pros

"Being open source lets us customize it for our monitoring needs, saving us money."
"Nagios Fusion version 12.8 excels in user-friendly GUI design, cost-effectiveness, and ease of deployment."
"It is easier for client installation, and the configurations are doable even for a newcomer in the field."
"It's very easy to manage and monitor it."
"PRTG Network Monitor helped prevent incidents by creating an alert to the DL when servers go down, notifying me before it became a bigger problem."
"The most valuable feature of PRTG Network Monitor is the different monitoring probes available."
"The pricing of the solution is pretty good; we don't find it too unreasonable, and it offers good integration capabilities with an initial setup that was easy and rolled out smoothly."
"Personally, in my 20 years of experience working with monitoring systems, this is the best."
"I can create my own program sensor. This means I can add extra monitoring capabilities into the already fundamentally strong foundation."
"Ease of set-up – it is quick and easy to add a probe and start collecting data from a device."
"PRTG Network Monitor is user-friendly and takes just one click to install the solution in Windows."
"Overall, this is a very good platform and provides value to the organization."
 

Cons

"Adding application performance monitoring to the product alongside infrastructure monitoring would make it a more complete and useful solution."
"In future iterations of this solution, there is a desire for more seamless integration with other monitoring software."
"Nagios Fusion should include a 'remember me' option when logging in, so we don't need to enter a username and password every time."
"There are some bugs, although not that many. There are some situations where the solution is not stable but the number of problems is not very high."
"The licensing policy needs more flexibility."
"We're using more cloud services now. It would be useful to be able to get information back from these cloud services in detail, and display any issues within PRTG for the rest of our systems."
"PRTG Network Monitor could improve by having a feature to allow uploading of preset standard network switch configurations and the ability to monitor the SLA configuration, such as uptime for the switches or internet connectivity. This would be very useful."
"PRTG Network Monitor can be improved because the dashboard themes feel outdated."
"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."
"The reporting features look very technical and that can be improved."
"PRTG Network Monitor should improve the NetFlow dashboard, there is no flexibility, and the NetFlow is not meeting the business needs. Additionally, they are missing part of the configuration management."
"It's very good for monitoring our internal infrastructure, but we're using more cloud services now."
 

Pricing and Cost Advice

"The pricing is quite reasonable, especially when compared to the broader market."
"I would like better pricing models for smaller businesses. The free version is fantastic, but it's too restrictive. If they could just get up to 200 sensors for a reasonable fee for on-premise, I would give PRTG my credit card right now."
"The licensing fees are billed annually and there are no costs in addition to this."
"We used a product called SolarWinds in the past, and its cost was high. Whereas, PRTG came in at a third of SolarWind's cost."
"We have an unlimited perpetual license, so we just pay support costs and it can scale throughout the organization."
"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."
"There is a license to use PRTG Network Monitor and it is annually."
"I'm paying something like €1000 per year for the maintenance. I've got unlimited sensors."
"It is expensive."
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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
Comms Service Provider
12%
Construction Company
10%
Manufacturing Company
10%
Marketing Services Firm
8%
Financial Services Firm
10%
Comms Service Provider
10%
Healthcare Company
7%
Outsourcing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business60
Midsize Enterprise19
Large Enterprise50
 

Questions from the Community

Ask a question
Earn 20 points
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 avoid the configuring the device in PRTG. It automatically discover the device an...
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 pricing, setup cost, and licensing is fair for our industry. They have quoted us...
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 understand it, that would be helpful.
 

Overview

 

Sample Customers

NuBlue, St.Elisabeth Hospital, Akamit Systems, National Radio Astronomy Observatory, ValueClick, Sunrise Banks
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 Nagios Fusion vs. PRTG Network Monitor and other solutions. Updated: September 2026.
915,341 professionals have used our research since 2012.