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Nagios XI 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:
 

ROI

Sentiment score
6.6
Nagios XI enhances efficiency and time management but concerns about increased costs affect ROI perception across organizations.
Sentiment score
6.9
PRTG Network Monitor boosts efficiency and cost savings by automating monitoring, preventing issues, and consolidating data for fast ROI.
 

Customer Service

Sentiment score
6.5
Nagios XI support is mixed; praised for responsiveness but criticized for high cost, complex licensing, and delayed responses.
Sentiment score
6.9
PRTG Network Monitor support is responsive, with online resources available, but improvements are needed for complex queries and remote assistance.
Tutorials are available so I can manage any issue with PRTG Network Monitor easily.
The setup process is well-documented, making it easy to deploy.
 

Scalability Issues

Sentiment score
7.1
Nagios XI is scalable for small to medium environments but faces challenges in large infrastructures and cloud adaptability.
Sentiment score
7.3
PRTG Network Monitor offers scalable network monitoring with remote probes, supporting small to enterprise environments despite potential high-sensor performance issues.
If the user interface isn’t presenting data well, it becomes difficult to manage when scaling.
On a scale of one to ten, scalability is rated as 9.5.
You can install them in each network, even if they are not connected, and it works.
PRTG Network Monitor has the ability to scale and add new devices.
 

Stability Issues

Sentiment score
7.3
Nagios XI is stable, but large deployments may experience performance issues, database problems, and minor network dependencies.
Sentiment score
7.9
PRTG Network Monitor is stable and reliable, with performance issues typically linked to setup, maintenance, and configuration.
It is very stable.
 

Room For Improvement

Nagios XI's interface is outdated, lacks scalability, needs better cloud integration, APIs, automation, and improved documentation.
PRTG Network Monitor requires enhancements in performance, cloud integration, user interface, and affordability to meet user demands effectively.
Many tools have poor user interfaces, making them hard to manage and navigate.
The GUI could be improved. It's a bit too basic.
They previously had a perpetual model, which meant that you bought a license and if you missed the end of the time, it still worked; you just lost the possibility of some upgrades.
They need to improve application performance monitoring, error tracing mechanisms, and log management.
PRTG Network Monitor can sometimes be too detailed and cluttered at the beginning, making it heavy to use.
 

Setup Cost

Nagios XI provides cost-efficient enterprise-level monitoring with reasonable pricing, appreciated for its features and open-source options.
PRTG Network Monitor provides flexible pricing and comprehensive features, appealing to enterprises with various budget and monitoring needs.
We are using the free, open-source version.
The pricing for the Nagios XI product is good and better than other solutions.
It's not too high, nor too low, but it's reasonable.
The prices are very high for PRTG Network Monitor.
Pricing is by the number of devices, not by sensor.
 

Valuable Features

Nagios XI provides customizable, flexible, and scalable IT infrastructure monitoring with real-time alerts and extensive plugin support.
PRTG Network Monitor offers rapid deployment, scalability, detailed insights, cost-effective licensing, and real-time monitoring, ensuring high customer satisfaction.
Nagios XI simplifies our setup and reduces the time spent configuring monitoring tools.
The alerting system is very effective.
PRTG Network Monitor already provided me with 100 free sensors, which is enough for my network monitoring.
You can rapidly monitor all the network of the company because it has a discovery function that enables you to find numerous devices in your network and start working with it immediately by pushing one button.
PRTG Network Monitor is easy to set up. Within a few minutes, it is operational.
 

Categories and Ranking

Nagios XI
Ranking in Network Monitoring Software
17th
Ranking in IT Infrastructure Monitoring
23rd
Ranking in Cloud Monitoring Software
21st
Average Rating
8.0
Reviews Sentiment
6.8
Number of Reviews
58
Ranking in other categories
Server Monitoring (10th)
PRTG Network Monitor
Ranking in Network Monitoring Software
5th
Ranking in IT Infrastructure Monitoring
6th
Ranking in Cloud Monitoring Software
11th
Average Rating
8.0
Reviews Sentiment
7.1
Number of Reviews
103
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of August 2025, in the Network Monitoring Software category, the mindshare of Nagios XI is 3.1%, down from 3.9% compared to the previous year. The mindshare of PRTG Network Monitor is 4.2%, down from 4.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software
 

Q&A Highlights

it_user82725 - PeerSpot reviewer
Mar 16, 2016
 

Featured Reviews

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…
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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…
 

Answers from the Community

it_user82725 - PeerSpot reviewer
Mar 16, 2016
Mar 16, 2016
PRTG is quite basic for this type of application monitoring, it'll give you some general metrics but what you're asking for is better done with Nagios, though its architecture and the information it provides won't give you the best metrics either. In this case your safest bet would be Zabbix, although both Nagios and Zabbix will steal a lot of your time until you can tune them to the detail lev...
2 out of 4 answers
Nov 26, 2014
PRTG is a network monitoring tool that uses SNMP protocol. You can configure weblogic server to use SNMP protocol to communicate with PRTG using agents. The same thing for Oracle ESB, by enabling SNMP traps in the Oracle Servcie bus. I think your business requirement as well as budget, will determine which monitoring tool you can use. I think all network monitoring tools, using SNMP traps, can do the job. Any SW or applications can build an SNMP traps to communicate with the monitoring tool. You can consult Oracle's manuals for more details. I hope this will be helpful. All the best, Ashraf Galal
it_user155127 - PeerSpot reviewer
Nov 26, 2014
Hi, I've no experience with PRTG, but you can find that on their site: http://www.paessler.com/oracle_monitoring I used to practice some time ago Nagios, on Linux boxes with web Logic, and it adapted well to our needs. I'm no longer experimenting with supervision tools as i switched to backup and storage. Regards E.Boutang
 

Top Industries

By visitors reading reviews
Computer Software Company
13%
Financial Services Firm
11%
Manufacturing Company
9%
Government
9%
Computer Software Company
12%
Government
9%
Financial Services Firm
9%
Comms Service Provider
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

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 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.
 

Comparisons

 

Overview

 

Sample Customers

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 Nagios XI vs. PRTG Network Monitor and other solutions. Updated: July 2025.
865,140 professionals have used our research since 2012.