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Nagios XI vs PRTG Network Monitor vs Zabbix 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 efficiency by improving issue detection, reducing costs, and enabling reliable operations for small offices.
Sentiment score
7.7
Zabbix's open-source approach offers high ROI by eliminating costs, enhancing system visibility, and reducing operational expenses.
 

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
PRTG Network Monitor's customer service is mixed, with both praise for responsiveness and criticism for response times and support quality.
Sentiment score
6.9
Zabbix's support is praised for community assistance, responsiveness, expertise, and effective forums, with room for improvement noted.
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.
It is so straightforward that I have never had to use the support.
 

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 scalable and flexible, supporting various environments but requires careful planning for growth and licensing.
Sentiment score
6.9
Zabbix offers efficient scalability and performance for large enterprises, overcoming database and hardware challenges without costly licenses.
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.
Zabbix has high scalability.
Zabbix is very scalable and lightweight.
I would rate its scalability ten out of ten.
 

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 generally reliable, with minor configuration issues, requiring proper hardware and maintenance for optimal performance.
Sentiment score
7.6
Zabbix is highly stable, reliable, and resource-efficient, though occasional configuration and tuning are needed, especially for databases.
It is very stable.
Zabbix is very scalable and lightweight.
Zabbix is quite stable, and we haven't had any problems with Zabbix itself.
 

Room For Improvement

Nagios XI's interface is outdated, lacks scalability, needs better cloud integration, APIs, automation, and improved documentation.
PRTG Network Monitor needs improvements in templates, flexibility, apps, integrations, performance, support, security, monitoring, reporting, and costs.
Zabbix's user interface and features need improvement, with insufficient scalability, modern workload monitoring, and inadequate documentation.
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 can sometimes be too detailed and cluttered at the beginning, making it heavy to use.
PRTG Network Monitor should provide syslog monitoring since it is not available at this time.
The only issue I can note is that it's Linux-based, and Linux documentation is not the best.
 

Setup Cost

Nagios XI provides cost-efficient enterprise-level monitoring with reasonable pricing, appreciated for its features and open-source options.
PRTG Network Monitor's tiered pricing is economical but can be costly for large-scale use, with flexible licensing options.
Zabbix is a cost-effective, open-source enterprise solution with no licensing fees, appealing for its affordability compared to competitors.
We are using the free, open-source version.
The pricing for the Nagios XI product is good and better than other solutions.
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 provides efficient deployment, real-time monitoring, customization, and supports various environments with advanced features and responsive support.
Zabbix offers flexible, scalable open-source monitoring with strong customization, seamless API integration, and user-friendly features supported by robust documentation.
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.
If disk usage surpasses a threshold, say 70%, I receive alerts and can take proactive action.
Zabbix has a lot of features, including monitoring, status updates, and collecting information telemetry from storages and servers as well.
 

Mindshare comparison

As of April 2025, in the Network Monitoring Software category, the mindshare of Nagios XI is 3.3%, down from 4.2% compared to the previous year. The mindshare of PRTG Network Monitor is 4.2%, down from 5.0% compared to the previous year. The mindshare of Zabbix is 13.0%, up from 11.2% 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.
Tochukwu Uzomba - PeerSpot reviewer
Efficiently monitor networks across regions with seamless setup and robust feature set
PRTG Network Monitor is easy to set up. Within a few minutes, it is operational. It is an all-in-one monitoring solution without extra costs. For example, we set it up for an insurance company with branches across Africa. We are able to monitor from Lagos without installing anything in the branches, using the agentless feature. We just put in the IP address and the parameter, and we monitor from those ends. Additionally, all the sensors are very useful. Most people are interested in the bandwidth monitoring sensor to see what bandwidth the users are consuming. The pricing is affordable compared to SolarWinds.
ASM Naushad Alam - PeerSpot reviewer
Allows any number of customizations but lacks functionality for finding root causes
We have not yet purchased the commercial version so have a lack of technical ability. We do not yet fully know the key points or key features of the solution. We just use what we use along with WhatsUp Gold. Based on our use only, stability is rated a seven out of ten.
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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
54%
Computer Software Company
7%
Financial Services Firm
6%
Manufacturing Company
4%
Educational Organization
48%
Computer Software Company
8%
Government
5%
Financial Services Firm
5%
Educational Organization
34%
Computer Software Company
12%
Financial Services Firm
7%
Manufacturing Company
6%
 

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 prices are very high for PRTG Network Monitor. That's why I'm using the free100 sensor license.
What do you like most about Zabbix?
The template system in Zabbix is very beneficial as it saves time in configuration.
What needs improvement with Zabbix?
For me, Zabbix is very straightforward. I cannot think of any improvements needed. It's a very mature product. The on...
 

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
1. IBM 2. Dell 3. Cisco 4. HP 5. Oracle 6. Microsoft 7. Amazon 8. Google 9. Facebook 10. Twitter 11. LinkedIn 12. Netflix 13. Adobe 14. VMware 15. Salesforce 16. SAP 17. Intel 18. AT&T 19. Verizon 20. T-Mobile 21. Vodafone 22. Ericsson 23. Nokia 24. Siemens 25. General Electric 26. Honeywell 27. Philips 28. Sony 29. Samsung 30. LG 31. Panasonic 32. Toshiba
Find out what your peers are saying about Zabbix, Auvik, Datadog and others in Network Monitoring Software. Updated: April 2025.
849,475 professionals have used our research since 2012.