ITRS Geneos vs Nagios Core comparison

ITRS and Nagios are both solutions in the Network Monitoring Software category. ITRS is ranked #67 with an average rating of 5.0, while Nagios is ranked #12 with an average rating of 8.3. ITRS holds a 0.5% mindshare in NMS, compared to Nagios’s 2.5% 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

3,901 Views
1,053 Comparison Views

96% willing to recommend

Nagios Core

Read 51 Nagios Core reviews

3,994 Views
3,475 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: September 2025).

Buyer's Guide

ITRS Geneos vs. Nagios Core

September 2025

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Helped 868,787 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

67th

Ranking in IT Infrastructure Monitoring

46th

Average Rating

8.2

Reviews Sentiment

7.1

Number of Reviews

Ranking in other categories

Application Performance Monitoring (APM) and Observability (33rd)

Nagios Core

Ranking in Network Monitoring Software

12th

Ranking in IT Infrastructure Monitoring

11th

Average Rating

8.2

Reviews Sentiment

7.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of October 2025, in the Network Monitoring Software category, the mindshare of ITRS Geneos is 0.5%, down from 0.7% compared to the previous year. The mindshare of Nagios Core is 2.5%, down from 3.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Network Monitoring Software Market Share Distribution
Product	Market Share (%)
Nagios Core	2.5%
ITRS Geneos	0.5%
Other	97.0%

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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Nishith-Vyas

Tech Lead at STL Digital Limited

Valuable reporting and alert system with room for PDF export improvements

The NetEase reporting structure needs improvement, especially the availability report, which is weak. It should be generated automatically with minimal human intervention and should be exportable as a PDF. Besides that, an integrated PDF export feature for reports is necessary. Also, the alert mechanism and graphing mechanism need to be integrated properly into Nagios Core. Currently, integrating these requires advanced Linux knowledge. Integration of more visualization tools like Grafana and Prometheus for better graphing and visualization is also recommended.

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

"The clean and colorful UI and easy to use options like snooze and active times."

"ITRS can define rules to alert when certain parameters that you monitor breach a threshold. Rules can be configured to fire recovery actions automatically to clear the alert"

"One of the best aspects of Geneos is that it has a broad scope and can cover a lot of use cases. You can write your own scripts to monitor really specific things. And the rules that you can put in place can be quite complex for the alerts."

"One of the most valuable features of ITRS Geneos is the active time feature that helps with the trading applications that I support."

"This tool allows one to analyse, integrate and customize as per the systems and allows you to set your own rules."

"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."

"Tons of default modules which are available out of the box"

"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."

More ITRS Geneos pros

"It is fairly easy to set up, and we can monitor pretty much everything we want to."

"Nagios Core integrates with tools like Splunk, Datadog, or Dynatrace. It is usually used as a feed to provide more technical information about devices or hosts to another system."

"I would rate the overall solution ten points out of ten."

"What I like about Nagios Core is that it helps me ensure everything is running smoothly by checking the status of hosts and services."

"Our customers like that Nagios Core is an open source solution. It can be customized to our customers' specific needs."

"The good thing about Nagios Core is it covers everything."

"We use the product to monitor server applications."

"Key features include the GUI interface, its notification capabilities, and the real-time reporting."

More Nagios Core pros

Cons

"It needs to be easier to configure, especially with the JMX plugins."

"t needs to have better middleware integration for things such as application and Microsft SQL servers."

"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."

"One thing that could be improved in terms of rapid scaling would be more ability to clone aspects of an implementation. It seems like there are opportunities in this area, where we have repetitive tasks to do when it comes to implementing things on new servers or on new gateways. It would be great if there was an easy way to clone something that had already been done."

"The ITA, the post-incident analytics, could be improved."

"For the solution to stay relevant in the cloud-based monitoring environment Geneos needs more plug-ins with more features. Instead of offering clients workarounds, the solution should have a cloud-based out-of-the-box version."

"The dashboard feature is full of bugs. Grouping items results in a distorted dashboard."

"Much of the reporting outside of the user interface is very basic and requires much customization to be useful."

More ITRS Geneos cons

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

"The initial setup process could be easier."

"The mapping is a little hard."

"Cloud monitoring is an area for improvement because there aren't too many plugins available."

"There is room for improvement in the graphics."

"The UI is a little outdated and graphics could be displayed in a better way."

"The NetEase reporting structure needs improvement, especially the availability report, which is weak."

"Nagios Core can improve the graphical interface, it would make things a little easier."

More Nagios Core cons

Pricing and Cost Advice

"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."

"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."

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

"Pricing and licensing is based on the requirements."

"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."

"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."

"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."

More ITRS Geneos pricing and cost advice

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

"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."

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

"Lessening the price point would be an improvement."

"We are using the open-source, unpaid version."

"The enterprise version has technical support. The version we are using is free."

"It's free."

"Nagios Core is a cheap solution."

More Nagios Core pricing and cost advice

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Top Industries

By visitors reading reviews

Financial Services Firm

73%

Computer Software Company

University

Construction Company

Computer Software Company

14%

Comms Service Provider

Government

Manufacturing Company

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	22

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.

See all answers

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...

See all answers

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...

See all answers

What do you like most about Nagios Core?

What I like about Nagios Core is that it helps me ensure everything is running smoothly by checking the status of hosts and services.

See all answers

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

Comparisons

Dynatrace vs ITRS Geneos

Compared 23% of the time

Grafana vs ITRS Geneos

Compared 14% of the time

Splunk AppDynamics vs ITRS Geneos

Compared 13% of the time

Splunk Enterprise Security vs ITRS Geneos

Compared 8% of the time

More ITRS Geneos Competitors

Icinga vs Nagios Core

Compared 21% of the time

Nagios XI vs Nagios Core

Compared 14% of the time

Zabbix vs Nagios Core

Compared 12% of the time

Centreon vs Nagios Core

Compared 7% of the time

Checkmk vs Nagios Core

Compared 6% of the time

More Nagios Core Competitors

Product Reports

Buyer's Guide

ITRS Geneos

September 2025

Download ITRS Geneos product report

Buyer's Guide

Nagios Core

September 2025

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

September 2025

Free Report: ITRS Geneos vs. Nagios Core

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