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Nagios XI vs PRTG Network Monitor vs SCOM 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:
 

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 ROI by enhancing time efficiency, reducing staff needs, preventing failures, and offering cost-effective management.
Sentiment score
6.7
SCOM users see value in centralized monitoring, SLA compliance, cost efficiency, but face challenges with latency and database performance.
 

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
6.8
Users appreciate PRTG's intuitive design, often resolving issues via resources, despite email-only support and mixed service feedback.
Sentiment score
6.8
Microsoft SCOM support is generally positive, offering responsive service and resources, though satisfaction varies among users.
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.
They often treat issues in isolation, not considering how one problem might relate to another.
 

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 is highly scalable, allowing seamless expansion with added sensors or licenses, despite potential hardware limitations.
Sentiment score
6.9
SCOM scales effectively in large environments, performing well in Microsoft settings but has limitations with non-Microsoft device monitoring.
If the user interface isn’t presenting data well, it becomes difficult to manage when scaling.
PRTG Network Monitor has the ability to scale and add new devices.
On a scale of one to ten, scalability is rated as 9.5.
For less than one hundred devices, it is stable.
 

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 praised for its stability and reliability, with issues often due to user errors or limits.
Sentiment score
7.1
SCOM's stability depends on configuration, showing improvements and reliability in newer versions with proper maintenance despite occasional glitches.
It is very stable.
SCOM is a bit unstable lately, primarily due to a lack of resources.
 

Room For Improvement

Nagios XI's interface is outdated, lacks scalability, needs better cloud integration, APIs, automation, and improved documentation.
PRTG users seek enhancements in dashboards, cloud integration, application speed, support, reporting, pricing, and sensor expansion.
SCOM users criticize its cost, complexity, weak monitoring, slow performance, and inadequate third-party integration and multi-tenancy features.
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 need to improve application performance monitoring, error tracing mechanisms, and log management.
PRTG Network Monitor should provide syslog monitoring since it is not available at this time.
PRTG Network Monitor can sometimes be too detailed and cluttered at the beginning, making it heavy to use.
I would like to see a software-as-a-service version in Azure to eliminate the need for on-premise infrastructure.
SCOM is likely to be phased out in favor of more compatible tools like Icinga for application monitoring or when moving to cloud solutions like CloudWatch and Azure.
 

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, cost-effective licensing for enterprises, appealing for intuitive setup and competitive pricing against other solutions.
SCOM's pricing is cost-effective within Microsoft Enterprise Agreements, though licensing calculations can be complex with potential additional costs.
The pricing for the Nagios XI product is good and better than other solutions.
We are using the free, open-source version.
The prices are very high for PRTG Network Monitor.
Pricing is by the number of devices, not by sensor.
It's not too high, nor too low, but it's reasonable.
 

Valuable Features

Nagios XI provides customizable, flexible, and scalable IT infrastructure monitoring with real-time alerts and extensive plugin support.
PRTG Network Monitor is praised for its scalability, user-friendly interface, real-time monitoring, and seamless integration across various technologies.
SCOM offers deep integration and flexible monitoring for enterprise environments, with robust reporting, alerting, and seamless Microsoft service integration.
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.
PRTG Network Monitor is easy to set up. Within a few minutes, it is operational.
It is advantageous because it can be deployed on-premises.
It assists me in detecting server downtime and delivers basic performance monitoring right out of the box.
SCOM integrates several systems and offers correlation features, like setting up everything around Active Directory or DNS.
 

Mindshare comparison

As of June 2025, in the Network Monitoring Software category, the mindshare of Nagios XI is 3.2%, down from 4.0% compared to the previous year. The mindshare of PRTG Network Monitor is 4.3%, down from 4.8% compared to the previous year. The mindshare of SCOM is 1.8%, down from 2.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software
 

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…
MarcMermuys - PeerSpot reviewer
Has efficient monitoring with robust integration capabilities
We use SCOM to configure different monitors using several management packs. It integrates systems like Active Directory and correlates them, and it is used for monitoring and managing systems SCOM allows integration of several systems, providing correlation between different systems such as…
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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
Educational Organization
36%
Computer Software Company
10%
Financial Services Firm
8%
Manufacturing Company
6%
Educational Organization
38%
Computer Software Company
9%
Financial Services Firm
6%
Government
6%
Financial Services Firm
15%
Computer Software Company
12%
Government
10%
Manufacturing Company
8%
 

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 a...
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.
What do you like most about SCOM?
The tool helps to monitor Windows servers. It offers alerts from a central location.
What is your experience regarding pricing and costs for SCOM?
I am not aware of the exact pricing as it is managed by my supervisor. As an academic institution, we receive substan...
What needs improvement with SCOM?
SCOM is likely to be phased out in favor of more compatible tools like Icinga ( /products/icinga-reviews ) for applic...
 

Comparisons

 

Also Known As

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System Center Operations Manager, SCOM 2012
 

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
Dialog Telekom
Find out what your peers are saying about Zabbix, Auvik, SolarWinds and others in Network Monitoring Software. Updated: May 2025.
856,278 professionals have used our research since 2012.