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Nagios Fusion vs PRTG Network Monitor comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jun 15, 2025

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
48th
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
6th
Average Rating
8.0
Reviews Sentiment
7.1
Number of Reviews
103
Ranking in other categories
Network Monitoring Software (5th), Cloud Monitoring Software (11th)
 

Mindshare comparison

As of August 2025, in the IT Infrastructure Monitoring category, the mindshare of Nagios Fusion is 0.3%, up from 0.2% compared to the previous year. The mindshare of PRTG Network Monitor is 4.4%, up from 4.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
IT Infrastructure Monitoring
 

Featured Reviews

SI
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…
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

"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."
"Being open source lets us customize it for our monitoring needs, saving us money."
"It's very easy to manage and monitor it."
"The solution is scalable."
"The feature whereby it shows when my hard drives are moving towards thresholds that would be considered outages, before they reach that point - that is valuable."
"We can see trends for a lot of different things, such as hard drive space and bandwidth usage. We can see and plan for the future by knowing, "We're sort of at 75% capacity now. In three months time, we know we're going to be up to 90%,so we need to plan ahead for it, getting upgrades booked in place." Since things like this take time and effort, it's handy to see trends into the future of where our company is going."
"It is great for service level agreements and can comply fully with internet monitoring or any interface."
"Accessibility, ease of use (Web GUI, MobileApps). In general, compared with other software"
"The installation is not that complex."
"I really love the activity library. It gives the flexibility to discover data and metrics about my interface and data server."
"The solution provides us response times to issues."
 

Cons

"Adding application performance monitoring to the product alongside infrastructure monitoring would make it a more complete and useful solution."
"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."
"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."
"If PRTG could help me see the bandwidth for each host I have on my network, either for a wireless or a wired network, that would be very helpful."
"PRTG's application monitoring sensor is not strong."
"PRTG access works best from the web GUI. There are dedicated apps on Windows/Android/iOS, but they are slow and don’t work as well as the web GUI."
"There's always room for improvement. The high availability feature is good, but it's an area that PRTG could marginally improve. For example, in PRTG, both servers have a different IP, but it would make things a lot easier if they were bound by a single IP."
"Can be slow in the way it polls the different engines."
"The automation should be improved."
"Performance-wise, PRTG Network Monitor still needs improvement because a large number of SNMPv3 queries reduces tool performance."
"The clustering aspect needs improvement, as there is a bit of confusion about you do when hit that 5000 probe mark."
 

Pricing and Cost Advice

"The pricing is quite reasonable, especially when compared to the broader market."
"PRTG Network Monitor is cheap."
"The pricing is very low compared to other solutions."
"The scalability is there, but smaller companies might need CAM software to be able afford the product."
"While I am not the person who deals with pricing, I would say that we pay around 1000 pounds a year."
"PRTG is now available as PRTG Enterprise Monitor, and the price varies depending on the total number of sensors the customer buys"
"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."
"In my company now, we are using the free version."
"We've got 1,000 nodes and I believe it's a few hundred quid a month."
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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
No data available
Computer Software Company
12%
Government
9%
Financial Services Firm
9%
Comms Service Provider
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

Questions from the Community

What do you like most about Nagios Fusion?
Nagios Fusion version 12.8 excels in user-friendly GUI design, cost-effectiveness, and ease of deployment.
What needs improvement with Nagios Fusion?
In future iterations of this solution, there is a desire for more seamless integration with other monitoring software.
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 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.
 

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: July 2025.
865,164 professionals have used our research since 2012.