ITRS Geneos vs Nagios Core comparison

ITRS and Nagios are both solutions in the Network Monitoring Software category. ITRS is ranked #74 with an average rating of 5.0, while Nagios is ranked #10 with an average rating of 8.7. ITRS holds a 0.6% mindshare in NMS, compared to Nagios’s 1.7% mindshare. Additionally, 96% of ITRS users are willing to recommend the solution, compared to 80% of Nagios users who would recommend it.

ITRS Geneos

Read 57 ITRS Geneos reviews

5,390 Views
1,886 Comparison Views

96% willing to recommend

Nagios Core

Read 51 Nagios Core reviews

6,461 Views
5,298 Comparison Views

80% willing to recommend

ITRS Geneos

Nagios Core

Comparison Buyer's Guide

Download the report

Executive SummaryUpdated on Oct 9, 2024

ITRS Geneos and Nagios Core are competitors in the monitoring solutions category. ITRS Geneos seems to have the upper hand with its real-time insights and extensive integration capabilities, while Nagios Core offers flexibility with significant customization through its open-source platform.

Features: ITRS Geneos provides real-time monitoring with comprehensive integration capabilities and customizable dashboards. It offers real-time insights and issue prediction to reduce latency. Nagios Core, as an open-source solution, allows significant customization and supports various monitoring needs. It offers infrastructure monitoring and rudimentary application checks.

Room for Improvement: ITRS Geneos needs enhanced historical data reporting and better cloud monitoring. Users seek improved middleware integration and dashboard flexibility. Nagios Core should address its steep learning curve due to the complex configuration process, and users desire a more user-friendly UI and cloud integration.

Ease of Deployment and Customer Service: ITRS Geneos mainly supports on-premises installations with recognized customer service proficiency, though faster response times are desired. Nagios Core supports on-premises and hybrid environments with a community-driven support model, fostering self-sufficiency due to limited direct vendor support.

Pricing and ROI: ITRS Geneos, noted for its higher cost, is justified by its capabilities and customizability, proving beneficial in environments where downtime is costly. Nagios Core is a free solution, avoiding licensing costs but may require significant investment in customization to match commercial offerings. It is resource-intensive due to specialized configurations for effective setup.

To learn more, read our detailed ITRS Geneos vs. Nagios Core Report (Updated: April 2026).

Buyer's Guide

ITRS Geneos vs. Nagios Core

April 2026

Download the complete report

Helped 887,041 peers since 2012

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

74th

Ranking in IT Infrastructure Monitoring

50th

Average Rating

8.2

Reviews Sentiment

7.1

Number of Reviews

Ranking in other categories

Application Performance Monitoring (APM) and Observability (48th)

Nagios Core

Ranking in Network Monitoring Software

10th

Ranking in IT Infrastructure Monitoring

10th

Average Rating

8.2

Reviews Sentiment

7.3

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of April 2026, in the Network Monitoring Software category, the mindshare of ITRS Geneos is 0.6%, up from 0.6% compared to the previous year. The mindshare of Nagios Core is 1.7%, down from 3.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Network Monitoring Software Mindshare Distribution
Product	Mindshare (%)
Nagios Core	1.7%
ITRS Geneos	0.6%
Other	97.7%

Network Monitoring Software

Featured Reviews

Sanket

Chief Manager at a marketing services firm with 501-1,000 employees

With the help of the solution, we can predict and prevent failures

Currently, the most valuable thing for an individual is a mobile device. Since that is where people are currently tracking everything, we have multiple applications or apps that are for various products. I would like ITRS Geneos to develop an app, where instead of going to specific login terminals or logging into laptops or desktops to check alerts, we can have visibility in the app itself. Using the ITRS Geneos app, we could see the error message during our travels or wherever we are. I would like to see the capacity of messages for forecasting increased. Since the NSE is the number one derivative stock exchange in the work for three consecutive years, the number of messages is important. We use the capacity planner in ITRS to forecast our data needs for the next two months. The planner is important because the volume of data we produce is becoming more and more volatile compared to when we first started using ITRS Geneos in 2014.

Read full review

Husham Yaqoob

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.

Read full review

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 solution is used across the entire investment banking division, covering environments such as electronic trading, algo-trading, fixed income, FX, etc. It monitors that environment and enables a bank to significantly reduce down time. Although hard to measure, since implementation, we have probably seen some increased stability because of it and we have definitely seen teams a lot more aware of their environment. Consequently, we can be more proactive in challenging and improving previously undetected weaknesses."

"One of the most valuable features is that it can be configured by non-developers. It doesn't require development expertise to configure it."

"The tool is highly customizable and can be tailored to your requirements."

"The great advantage of this tool is real-time monitoring."

"As a company looking to onboard, its capacity to monitor just about anything from Unix log files and processes to database memory, and even run queries and provide results, means it can be used as a one stop shop for all your monitoring needs if you understand how to utilise it to its fullest extent."

"The confidence of our users has greatly improved because of our ability to react much faster."

"The biggest benefit of Geneos is the fact that we can clearly see, if we have an alert, where that alert has come from. We can see the data around that alert and anything that might be relevant is also shown. We can very easily right-click and see why we've received that alert. That's the best part about it, that you've got all the data there with the alerting."

More ITRS Geneos pros

"I like the way the solution sends alerts and how it keeps on escalating them."

"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."

"Nagios Core is a great solution for monitoring pretty much any size of deployment but you do need to know your way around a Linux system to set it up and run it."

"The solution is very complete and mostly easy to manage."

"The solution's most valuable feature is that it offers proper alerting capabilities."

"Nagios Core is a great tool for monitoring the infrastructure including MSM queues, and when we use the agent, we can add other things as well."

"It sends alerts to the right people which ensures there is no delay in the correct person or team looking into issues, and it has helped to reduce downtime in the production environment to almost zero so we now spend less time on network or server administration."

"The most valuable features are the reports and the way it generates the report in a graphical manner."

More Nagios Core pros

Cons

"The interface can sometimes be a little complicated."

"ITRS Geneos is not on the cloud at a time when everyone is moving to the cloud."

"They have the Webslinger solution where you can see when something is alerting. It's a little bit cumbersome."

"Data visualization – real time and historical – is a weakness."

"The deployment method for upgrading is a bit tricky. It takes a little bit of manual effort."

"Currently the dashboard does not have the capability of providing different status levels, and this needs to be updated."

"Currently, it is difficult to monitor secure websites using SSL or with SSO enabled."

"A lightweight version which could host more than 100 gateways, as we can see slowness while loading all our gateways."

More ITRS Geneos cons

"I would like to see a sensor that shows the traffic of a user and what they're doing on the network."

"We use the free version of Nagios, which needs some administrative skills in order to configure correctly."

"They should simplify the features so it becomes easier to setup out of the box."

"There is room for improvement in the graphics."

"The core version is no match for the XI version."

"The tool needs to improve the integrations."

"I would like to see more training videos."

"Application level monitoring is limited."

More Nagios Core cons

Pricing and Cost Advice

"Its price is reasonable. It isn't too expensive, and it isn't too cheap, but it also depends on a company's volume and negotiation."

"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."

"I can say it's not that cheap because the licensing is a little bit costly"

"When I first came in, their pricing was very high. ITRS had a high expectation of what their price should be based on perceived value. I think they have been realizing, more recently, that there are other competitors, so their pricing is a lot better. Licensing for on-premise is okay, however I feel there is quite some work to be done for cloud and containers. We're still working with them to try and work out what that pricing should look like."

"The pricing seems reasonable. We're happy enough with it."

"The organization is not just purchasing a license for the product, but also managing services and professional services from ITRS. Another factor is if the implementation is going to be in production, non-production, or both."

"The market tools are on par with this solution, but if the solution included more features, then it would be well within the range for the cost."

"You will get the best price if you get a single global deal."

More ITRS Geneos pricing and cost advice

"It's free."

"Nagios Core is an open source solution, and there are no licensing fees."

"Nagios Core is a cheap solution."

"We are using the free version of Nagios Core."

"I would rate the solution's pricing an eight out of ten."

"Nagios Core is free to use."

"We are using the free version."

"The Nagios Core (PNP4Nagios + Core) is free and can be setup by Netadmin within a few hours. The only additional cost is the cloud server."

More Nagios Core pricing and cost advice

See which vendors are best for you

Use our free recommendation engine to learn which Network Monitoring Software solutions are best for your needs.

See recommendations

887,041 professionals have used our research since 2012.

Top Industries

By visitors reading reviews

Financial Services Firm

66%

Computer Software Company

Construction Company

Outsourcing Company

Comms Service Provider

10%

Manufacturing Company

10%

Computer Software Company

Financial Services Firm

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	6
Midsize Enterprise	12
Large Enterprise	39

By reviewers
Company Size	Count
Small Business	20
Midsize Enterprise	11
Large Enterprise	23

Questions from the Community

Ask a question

Earn 20 points

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.

See all answers

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.

See all answers

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...

See all answers

Comparisons

Dynatrace vs ITRS Geneos

Compared 8% of the time

Splunk AppDynamics vs ITRS Geneos

Compared 6% of the time

Grafana vs ITRS Geneos

Compared 5% of the time

Nagios XI vs ITRS Geneos

Compared 5% of the time

Zabbix vs ITRS Geneos

Compared 4% of the time

More ITRS Geneos Competitors

LibreNMS vs Nagios Core

Compared 7% of the time

Icinga vs Nagios Core

Compared 5% of the time

Zabbix vs Nagios Core

Compared 5% of the time

Centreon vs Nagios Core

Compared 5% of the time

OpenNMS vs Nagios Core

Compared 5% of the time

More Nagios Core Competitors

Product Reports

Buyer's Guide

ITRS Geneos

April 2026

Download ITRS Geneos product report

Buyer's Guide

Nagios Core

April 2026

Download Nagios Core product report

Also Known As

Geneos

No data available

Overview

ITRS Geneos is a real-time monitoring tool designed for managing increasingly complex, hybrid and interconnected IT estates.

Built with financial services and trading organisations in mind, it collects a wide range of data relating to server performance, infrastructure, trading, connectivity and applications, and analyses it to provide relevant information and alerts in real time.

Geneos can give full stack visibility across highly dynamic environments and presents all the information through a single pane of glass and its configurable and customisable dashboards provide end-to-end visibility to both technical and business users.

For more information, please visit https://www.itrsgroup.com/products/geneos

ITRS

This is IT infrastructure monitoring's industry-standard, open-source core. Free without professional support services.

Nagios

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

Buyer's Guide

ITRS Geneos vs. Nagios Core

April 2026

Free Report: ITRS Geneos vs. Nagios Core

Find out what your peers are saying about ITRS Geneos vs. Nagios Core and other solutions. Updated: April 2026.

DOWNLOAD NOW

887,041 professionals have used our research since 2012.

See our ITRS Geneos vs. Nagios Core report.

See our list of best Network Monitoring Software vendors and best IT Infrastructure Monitoring vendors.

We monitor all Network Monitoring Software reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.