ITRS Geneos vs Nagios Core comparison

ITRS and Nagios are both solutions in the Network Monitoring Software category. ITRS is ranked #68 with an average rating of 5.0, while Nagios is ranked #13 with an average rating of 8.3. ITRS holds a 0.6% mindshare in NMS, compared to Nagios’s 2.6% 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

4,081 Views
1,102 Comparison Views

96% willing to recommend

Nagios Core

Read 51 Nagios Core reviews

4,252 Views
3,699 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 867,497 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

68th

Ranking in IT Infrastructure Monitoring

47th

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

13th

Ranking in IT Infrastructure Monitoring

10th

Average Rating

8.2

Reviews Sentiment

7.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of September 2025, 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 2.6%, down from 3.3% 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	2.6%
ITRS Geneos	0.6%
Other	96.8%

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 filtering in the Active Console is exceptional. Depending on the user base, some people don't want to see server-level errors, so we have filters set up in the Managed Entities view, which allow us to filter out things that certain groups don't want to see, while allowing them to see other things. It's a great real-time monitoring solution. And you can draw graphs immediately, right from the Active Console, whether they're current graphs or historical graphs."

"The solution's log monitoring and alerting mechanisms are very user-friendly and easy to plug and play."

"The Netprobe is so lightweight compared to the agents that most monitoring tools use. It's really superior to the competition. The agent that is used by almost every competitive tool takes a lot more system resources. It's slower and it requires a greater effort and more compromises in terms of security to install on the monitored servers. With Geneos, because it lives outside the code, it is far easier and far less taxing on the monitored systems."

"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 thing we're utilizing in Geneos is the Gateway-SQL. That's really helpful for us. Using Gateway-SQL, we are able to merge two different views into one. Suppose we have to check something in the log and that we have to check something in the database and do a comparison before publishing a result. We can achieve that using Gateway-SQL."

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

"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)."

"I always appreciate Geneos's stability and ease of use."

More ITRS Geneos pros

"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."

"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 like that it's very simple to install, easy to manage and deploy, and easy to use for monitoring."

"Nagios Core is stable."

"Alert calls occur anytime a service goes down or a matrix is difficult and that helps us to quickly restore service and transfer work."

"Nagios Core is very configurable. Whatever you want, you can do it."

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

"The application performance monitoring feature is valuable."

More Nagios Core pros

Cons

"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."

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

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

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

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

"I would like to see ITRS integrate its setup editor with a SVN to check-in setup XML after major changes."

"I would like better access to the data that is being collected."

"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."

More ITRS Geneos cons

"The scalability needs improvement, it's not scalable at this time."

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

"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."

"Nagios Core does not have a graphic display."

"Nagios Core is limited in terms of distributed setups, and there is no central view for remote data centers."

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

"There is room for improvement in the graphics."

More Nagios Core cons

Pricing and Cost Advice

"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."

"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 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."

"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."

"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."

"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 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."

More ITRS Geneos pricing and cost advice

"Nagios Core is a cheap solution."

"Most the plugin features are free."

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

"The solution is expensive."

"Nagios Core is free to use."

"It's free."

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

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

More Nagios Core pricing and cost advice

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Top Industries

By visitors reading reviews

Financial Services Firm

72%

Computer Software Company

University

Construction Company

Computer Software Company

14%

Government

Manufacturing Company

Comms Service Provider

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 22% of the time

Splunk AppDynamics vs ITRS Geneos

Compared 14% of the time

Grafana vs ITRS Geneos

Compared 13% of the time

Datadog vs ITRS Geneos

Compared 8% of the time

Scout APM vs ITRS Geneos

Compared 2% of the time

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Icinga vs Nagios Core

Compared 23% of the time

Nagios XI vs Nagios Core

Compared 15% of the time

Zabbix vs Nagios Core

Compared 13% 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

August 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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