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ITRS Geneos vs Nagios Core comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Oct 9, 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

ITRS Geneos
Ranking in Network Monitoring Software
68th
Ranking in IT Infrastructure Monitoring
45th
Average Rating
8.2
Reviews Sentiment
7.1
Number of Reviews
57
Ranking in other categories
Application Performance Monitoring (APM) and Observability (33rd)
Nagios Core
Ranking in Network Monitoring Software
10th
Ranking in IT Infrastructure Monitoring
11th
Average Rating
8.2
Reviews Sentiment
7.0
Number of Reviews
51
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of January 2026, in the Network Monitoring Software category, the mindshare of ITRS Geneos is 0.6%, down from 0.7% compared to the previous year. The mindshare of Nagios Core is 1.9%, down from 3.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software Market Share Distribution
ProductMarket Share (%)
Nagios Core1.9%
ITRS Geneos0.6%
Other97.5%
Network Monitoring Software
 

Featured Reviews

Durai CT - PeerSpot reviewer
Head FM Monitoring at a financial services firm with 10,001+ employees
A stable, scalable, and flexible monitoring tool
Real-time data is one of the unique features that ITRS Geneos offers. For example, if there is an impact on a particular server and a particular application, I want to see what the impact is or what the CPU or hardware usage information is, as well as the service in the same application. I can see the real-time data and the impact by accessing ITRS Geneos and looking at the tree. I don't want a tool that tells me when something is broken. I want the tool to tell me when something is going to break. That is the difference between ITRS Geneos and other tools. I want proactive monitoring, not reactive. I don't need to be notified after the fact that something has broken. If something is broken, I get a notification by email, and some of my customers are going to call me. ITRS Geneos provides proactive monitoring. The great advantage of this tool is real-time monitoring. ITRS Geneos not only alerts us but also gives us a real-time view of the data. This is the tool's first great advantage. It is also lightweight and flexible and can adapt to monitor even low-latency systems, which is the tool's second advantage. Another great feature of this tool is its good presentation layer, which allows us to build custom dashboards to present to business stakeholders. This gives them a high-level status of what is being monitored. If we compare ITRS Geneos to other tools, we will find that each one specializes in a specific area, but the ITRS Geneos tool is more comprehensive. This is its great advantage.
HY
Senior System Administrator at Interactive Group
Monitoring solution provides comprehensive visibility across IT infrastructure
The good thing about Nagios Core is it covers everything. Everything in the IT domain, you can monitor anything. You can even monitor printers, the ports of printers, Core workstations, and storage. You can monitor the workflow Core and the utilization of computes. If you want to grasp everything of your IT equipment on a single interface, you can use Nagios. It's the best one. It provides dashboards, and you can also configure your emails and alerts with it. If something is critical, you can configure it to notify via emails. It has a very handy dashboard, providing live alerts and visibility for everything.

Quotes from Members

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

Pros

"Geneos automatically sends email notifications when any batch job fails, the database is down or the website is down. It is automatically monitoring everything and reduces manual effort."
"The ability to build integrations to tools that are not monitored out of the box is the most valuable feature."
"The built-in plug-ins allow administrators to easily configure monitoring components for market data systems such as Thomson Reuters Enterprise Platform and SRLabs Wombat (formerly NYSE)."
"This tool allows one to analyse, integrate and customize as per the systems and allows you to set your own rules."
"The great advantage of this tool is real-time monitoring."
"Custom script toolkits"
"The ability to completely tailor and customize what it's monitoring is one of its strongest points. A lot of other monitoring tools are good at certain things, but one of my colleagues described it as the “Swiss Army Knife” of monitoring tools. It can do anything you want."
"One of the most valuable features of ITRS Geneos is the active time feature that helps with the trading applications that I support."
"I like that it's very simple to install, easy to manage and deploy, and easy to use for monitoring."
"The most valuable feature is the performance parameters of the system."
"I like the way the solution sends alerts and how it keeps on escalating them."
"I would rate the overall solution ten points out of ten."
"The most valuable feature of Nagios Core is the ability to check the availability of the server for network connectivity. Additionally, the interface is good."
"Our customers like that Nagios Core is an open source solution. It can be customized to our customers' specific needs."
"The notifications are definitely one of the most valuable features of Nagios Core. We know what to look for and what to expect when things are down."
"The solution's most valuable feature is that it offers proper alerting capabilities."
 

Cons

"I would also like to see suggested guidelines to accomplish a monitoring task. The issue is that ITRS is so flexible that there is more than one way to complete a task, each with benefits and disadvantages."
"A lightweight version which could host more than 100 gateways, as we can see slowness while loading all our gateways."
"ITRS Geneos is not on the cloud at a time when everyone is moving to the cloud."
"t needs to have better middleware integration for things such as application and Microsft SQL servers."
"There is a part of the rules for monitoring alerts. I want to understand more about how to choose the samples and the requirements for the rules. That is the part that I want to understand better and get better training for."
"The ITA, the post-incident analytics, could be improved."
"One area where there is room for improvement is the log file. I would like to be able to do a pre-run on the log files. When you are testing log files for regular expressions, it would be good to be able to do a quick check up front on that side of things before you release that into production."
"There is one drawback to using lightweight data collection: we lack the feature of observability based on time series, such as historical model data. This makes it difficult to view data in ITRS. ITRS needs to improve this feature."
"I believe Nagios Core will need to provide an option for big data platforms in the future."
"The tool needs to improve the integrations."
"There is room for improvement in the graphics."
"The alerting mechanism in Nagios Core could be improved."
"I would like to see a sensor that shows the traffic of a user and what they're doing on the network."
"The dashboard should be improved."
"The initial setup process could be easier."
"Nagios Core does not have a graphic display."
 

Pricing and Cost Advice

"Given our spend and the amount of service we have in it, the pricing is quite reasonable."
"The product is priced quite high. There are pricing options for customers based on the size of the environment and plug-ins used by the monitoring system."
"Pricing is the touchy subject, even here. Upper management always wants us to find a cheaper solution. But we have so much integrated with ITRS... It's expensive, but it does its job very well. And you set it and go."
"Based on feedback from colleagues and friends working in the financial sector, Geneos is relatively costly. Many companies have been switching from Geneos to Dynatrace, Sysdig, or other monitoring tools in the past two years because of the price."
"The pricing seems reasonable. We're happy enough with it."
"It is expensive. They have to look at the model around when we move to cloud and how that's going to work. The licensing cost does pay off because of the improvements in support to our business."
"The pricing is fairly market-related. They have been very lenient because we have been working with them for so long. An example is that we're currently migrating some of our services to AWS, and they've given us a grace period for some of the things to help with the migration and not to grow additional costs while we are migrating, but it's still on par with the market."
"I can say it's not that cheap because the licensing is a little bit costly"
"It's free."
"We are using the free version of Nagios Core."
"We are using the free version."
"Nagios Core is a cheap solution."
"Nagios Core is free to use."
"The product is cheaply priced."
"We are using the open-source, unpaid version."
"I would rate the solution's pricing an eight out of ten."
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Top Industries

By visitors reading reviews
Financial Services Firm
70%
Computer Software Company
5%
Construction Company
3%
Outsourcing Company
2%
Computer Software Company
11%
Manufacturing Company
10%
Comms Service Provider
9%
Government
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business6
Midsize Enterprise12
Large Enterprise39
By reviewers
Company SizeCount
Small Business20
Midsize Enterprise11
Large Enterprise22
 

Questions from the Community

What is your experience regarding pricing and costs for ITRS Geneos?
The pricing is high. Licensing fees might be around 500$ per server monthly.
What needs improvement with ITRS Geneos?
ITRS Geneos is a legacy system. It predicts or provides proactive measures once an issue is resolved. It doesn't offer any predictive capabilities or root cause analysis. They throw a lot of data i...
What is your primary use case for ITRS Geneos?
ITRS offers multiple products, including upgrades for synthetic monitoring and a SaaS platform. Geneos is used for infrastructure monitoring, covering KPIs such as CPU, memory, processes, network l...
What is your experience regarding pricing and costs for Nagios Core?
Nagios Core is a free and open-source product. We don't charge for the product itself, but we charge for the man-hour costs related to installation, configuration, ongoing operation, and maintenance.
What needs improvement with Nagios Core?
The dashboard should be improved. It's very simple. I don't have a very clear or specific suggestion. You can change the skin of the dashboard, however, it's good for me.
What is your primary use case for Nagios Core?
I was a senior system administrator. I've been using Nagios Core for more than ten years now. It can be used to monitor hosts, such as machines, and monitor services of any kind. I'm using it to mo...
 

Comparisons

 

Also Known As

Geneos
No data available
 

Overview

 

Sample Customers

ITRS Geneos is used by over 170 financial institutions, including JPMorgan, HSBC, RBS, Deutsche Bank and Goldman Sachs. Clients range from investment banks to exchanges and brokers.
Airbnb, Cisco, PayPal, FanDuel
Find out what your peers are saying about ITRS Geneos vs. Nagios Core and other solutions. Updated: December 2025.
881,346 professionals have used our research since 2012.