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Nagios XI vs Observer GigaStor comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Oct 10, 2024

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 XI
Ranking in Network Monitoring Software
26th
Average Rating
8.0
Reviews Sentiment
6.8
Number of Reviews
58
Ranking in other categories
Server Monitoring (14th), IT Infrastructure Monitoring (28th), Cloud Monitoring Software (26th)
Observer GigaStor
Ranking in Network Monitoring Software
89th
Average Rating
9.0
Reviews Sentiment
8.1
Number of Reviews
7
Ranking in other categories
Network Troubleshooting (14th), Network Packet Broker (NPB) (11th)
 

Mindshare comparison

As of January 2026, in the Network Monitoring Software category, the mindshare of Nagios XI is 2.3%, down from 3.4% compared to the previous year. The mindshare of Observer GigaStor is 0.4%, up from 0.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software Market Share Distribution
ProductMarket Share (%)
Nagios XI2.3%
Observer GigaStor0.4%
Other97.3%
Network Monitoring Software
 

Featured Reviews

Emmanuel Appiah Boateng - PeerSpot reviewer
Network and Security Engineer at a educational organization with 1,001-5,000 employees
Simplifies setup and requires user interface enhancement
Nagios XI is easy to install, which sets it apart from other open-source solutions I've tried. Typically, setting up a monitoring system on Linux involves cloning files from GitHub, building it, and installing many dependencies, but with Nagios XI, it wasn't like that. Nagios XI simplifies our setup and reduces the time spent configuring monitoring tools.
Jeroen-Dubbelman - PeerSpot reviewer
Director at Bitrate
Aids significantly in the threat-hunting process and provides a score-based evaluation of user experience
There are many valuable features, but understanding end-user response times stands out. It provides a score-based evaluation of user experience, helping customers quickly pinpoint whether issues originate from the network, server, client, or application. Additionally, it facilitates in-depth analysis of application dependencies. The retrospective network analysis capability of Observer GigaStor has been beneficial. It's a pivotal feature for network performance solutions. However, I prefer to consider the entire solution suite - GigaStor, along with GigaFlow and Apex - for comprehensive network visibility and monitoring. So, I prefer to integrate all three solutions to provide the best visibility. They complement each other well, with Apex aggregating and correlating data from both GigaStor and GigaFlow to enhance environmental understanding and troubleshooting efficiency.

Quotes from Members

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

Pros

"We love Nagios XI due to the fact that JPS Web is very useful."
"The most useful aspect of this solution is the ability to customize it for the client agent."
"Since this is an open source technology, if we are capable of writing the plugins in any scripting language, this product allows us to monitor anything we want."
"The solution is pretty stable."
"An excellent solution that is easy and intuitive to implement."
"It's great for monitoring IT services infrastructure."
"This is a very good solution and it is simple to use, for any company."
"The most valuable feature is the dashboard, where I can have a single screen that provides a summary for hundreds of servers."
"There are many valuable features, but understanding end-user response times stands out. It provides a score-based evaluation of user experience, helping customers quickly pinpoint whether issues originate from the network, server, client, or application. Additionally, it facilitates in-depth analysis of application dependencies."
"The ability to capture packets. It is not only for monitoring. That is very important for a company that wants to keep an eye on the packets, the transactions, the flows..."
"This solution allows us to see exactly what is going on in the network and we can very quickly solve issues with users."
"I also have the ability to see an application's performance, to see what's going on, why a network is slow, why this program for this user is experiencing a delay or some network issue"
"It can help to write your rules, organize firewalls, your block, and also your protocols and IP address to come in or out of your network."
"It's able to capture packets and, after a long time, you can come and use that information; to check, to analyze - everything you would want to do. So it's very good and helpful if you want to protect your data. It is stored in a certain place where you can access it every time you want to analyze it."
 

Cons

"I would like a much easier GUI so that I can delete events and logs, which will free up a lot of space."
"From an alerting point of view, some graphics and metrics don't work properly with Nagios XI as they do with Checkmk."
"Improve the documentation, examples, and best practices, therefore users can understand how to do things."
"The interface could be more user-friendly."
"Nagios XI can improve network and hardware monitoring, these parameters should be simplified to allow usage for monitoring. Additionally, if there was automatic reporting it would be helpful."
"The GUI could be improved."
"The PNP4Nagios plugin not working easily with XI is an issue for me, because some open source monitoring plugins do not work out of the box. But in the end, you learn to live with it."
"I would like to be able to extend it to all of our data centers, whether they are in the cloud or not. It would be helpful if I could connect everywhere."
"I would like to have more than 4TB of storage available in the portable version of this solution."
"Graphics need improvement. Because a lot of the information there you have to input first in some case to have full potential. It could be more automated."
"GigaStor feeds into Apex. So, the area where there could be improvement would be in artificial intelligence. For example, the incorporation of more advanced machine learning or AI capabilities could enhance its functionality."
"Maybe the graphical user interface could be simplified to allow people to use it more easily. It's already good, but they can work more on it to make it even easier."
 

Pricing and Cost Advice

"Nagios Core does not have any payment, but Nagios XI requires payment for the license."
"As it is not an agentless tool, I think it is expensive."
"The pricing is high with separate licensing for the product and support."
"The pricing is really cost efficient. The licensing is perpetual and can be renewed very easily."
"Nagios XI is open source."
"This solution is very expensive, at approximately $5,000 USD when I purchased it, which is why I haven't upgraded my version in several years."
"For our country in North Africa, it's expensive and we could purchase another solution for that price. But it's a reasonable price if we're speaking in international terms."
"It is good to contact experts for advice about what is the best solution for your specific infrastructure and enterprise."
"It's quite expensive."
"It depends on the requirements you have. There are three types of license. There's the updates license, the work group license, and the workstation license."
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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
Financial Services Firm
11%
Computer Software Company
11%
Manufacturing Company
8%
Government
7%
Financial Services Firm
17%
Computer Software Company
11%
Manufacturing Company
8%
Wholesaler/Distributor
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business22
Midsize Enterprise17
Large Enterprise21
By reviewers
Company SizeCount
Small Business5
Large Enterprise3
 

Questions from the Community

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 your primary use case for Nagios XI?
I normally use Nagios XI for our servers. It's not particularly used for network equipment, however, I use it for monitoring our server performance, including CPU, memory, data, and services runnin...
What do you like most about Observer GigaStor?
There are many valuable features, but understanding end-user response times stands out. It provides a score-based evaluation of user experience, helping customers quickly pinpoint whether issues or...
What is your experience regarding pricing and costs for Observer GigaStor?
I would rate the pricing a ten out of ten. It's quite expensive.
What needs improvement with Observer GigaStor?
GigaStor feeds into Apex. So, the area where there could be improvement would be in artificial intelligence. For example, the incorporation of more advanced machine learning or AI capabilities coul...
 

Overview

 

Sample Customers

Nagios has over one million users globally, including AOL, DHL, McAfee, MCI, MTV, Yahoo!, Universal, Toshiba, Sony, Siemens, and JPMorgan Chase.
Cisco Systems, Hawaiian Telecom, Renown Health, State of Nevada, U.S. Department of Veteran Affairs, Allstate Insurance, Jack Henry & Associates, United States Airforce, US Bank, Blue Cross Blue Shield of Minnesota, Texas Tech University Health Sciences Center, Chicago Board Options Exchange
Find out what your peers are saying about Nagios XI vs. Observer GigaStor and other solutions. Updated: December 2025.
881,114 professionals have used our research since 2012.