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

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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

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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.

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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

"We have been able to monitor the repeated critical alerts and work on producing a more stable environment for our customers."

"The good thing is you get something out of it day one, you don't need years of training, and then you can build on that."

"The result was a similar metrics monitored at a much better frequency, with a more stable product and a much better user interface."

"It has helped us re-define the Monitoring operating model which in turn has made support teams more efficient by using features like commented snoozing on various levels, use of knowledgebase articles associated with each alert cell, metric logging for capacity monitoring etc."

"In my experience, being able to monitor our databases is a valuable feature as we can create our own queries and aren't reliant on the in-built ones."

"ITRS Active Console has helped us monitor servers and set thresholds for different metrics, is easy to setup, works with different kinds of servers, and also helps you execute shell scripts as a response to alerts."

"I would say that it is an easy-to-use monitoring tool. Amongst the available monitoring tools, it is a really good option."

"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

"The poller is really good, I can easily implement new stuff and it is scalable."

"We have used this product now for quite some time and we are happy with it."

"The features of Nagios Core that we find most valuable are the plugins we use, we can check the uptime and see how many servers and routers and create groups accordingly."

"Nagios monitors our servers, so we know if anything goes wrong and can solve the problem before it happens."

"The most valuable feature is the performance parameters of the system."

"The most valuable feature of Nagios Core is it allows us to develop and add as many plugins as we want."

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

"We've got a medium size distributed system with a lot of locally installed machines, and Nagios provides us with a solid and reliable monitoring solution for these machines."

More Nagios Core pros

Cons

"Some aspects of dashboarding are very proprietary and it makes it difficult, at times, to replicate your work easily."

"Mobile phone integration is probably not as rich as it could be."

"The main weakness of the product is poor historical logging and reporting."

"Not a ten because when the Gateway was very overloaded it was very hard to monitor the alerts, especially for the product services."

"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."

"The graphical interface is nice but could be improved."

"For the last year or two, I've been asking the vendor about the mobile app. This is something that probably everyone asks when they see the tool and they see how powerful it is. If there is any mobile app for this or if there is any way this tool can be more easily accessible other than having a big client installed, it would be great. I know you can build dashboards, et cetera, but there is no quick and easy way. I should be able to download an app, log in, and see my status. That will put this product above everything else out there. I believe it's on their roadmap."

"The main feature that needs work is the Dashboard designer."

More ITRS Geneos cons

"It is a bit slow due to latency."

"We're using the free version, which limits us in terms of the things that we can do."

"I would like to see a much better Nagios Manager GUI that can support all type of configuration items, and advance search options."

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

"Default interface is clunky and slow."

"Nagios Core could improve by adding a user interface. If you want the user interface you have to use Nagios XI."

"Nagios Core is not easy to use, so I don't recommend it for everyone."

More Nagios Core cons

Pricing and Cost Advice

"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."

"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."

"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."

"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 licensing cost may seem expensive upfront. However, the service is outstanding, the tool does things that no other tools can do, and the customizability more than makes up for the cost of licensing."

"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."

"ITRS Geneos is not a cheap tool. It's a moderate price for the banking industry. The reason we are not able to add the ITRS monitoring tool for the non-banking industries, and non-finance industries, is that the pricing is too high."

"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."

More ITRS Geneos pricing and cost advice

"Nagios Core is free to use."

"It's free."

"We are using the free version."

"The product is cheaply priced."

"Most the plugin features are free."

"We have saved a lot of time, money, and effort in reducing disaster times, which is owed to Nagios quick alerting."

"It's free."

"The solution is expensive."

More Nagios Core pricing and cost advice

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Top Industries

By visitors reading reviews

Financial Services Firm

65%

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

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Compared 5% of the time

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Compared 4% of the time

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Compared 5% of the time

Centreon vs Nagios Core

Compared 5% of the time

OpenNMS vs Nagios Core

Compared 4% of the time

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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.

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