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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
72nd
Ranking in IT Infrastructure Monitoring
50th
Average Rating
8.2
Reviews Sentiment
7.0
Number of Reviews
58
Ranking in other categories
Application Performance Monitoring (APM) and Observability (48th)
Nagios Core
Ranking in Network Monitoring Software
11th
Ranking in IT Infrastructure Monitoring
11th
Average Rating
8.2
Reviews Sentiment
7.3
Number of Reviews
51
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 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 1.5%, down from 2.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software Mindshare Distribution
ProductMindshare (%)
Nagios Core1.5%
ITRS Geneos0.6%
Other97.9%
Network Monitoring Software
 

Featured Reviews

Ravi ShankarSundarasan - PeerSpot reviewer
Senior Technical Cloud Architect at Blue Yonder
Real-time monitoring has improved incident response and supports proactive anomaly detection
The advantages and strong points of ITRS Geneos for me personally are seamless integration with existing systems as well as upcoming modern systems. The user interface is really good. From a management point of view, these are the key aspects with respect to the user interface and seamless integration. We get very good community support for this product. ITRS Geneos has impacted my organization positively, and I would rate it 4.5 out of 5.
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

"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."
"Real-time log monitoring with desktop alerts is valuable as it tells us immediately when there is an issue."
"Ability to monitor logs for potential issues to prevent app outages before problems get a chance to arise. That's invaluable for our teams in a fast-paced trading environment."
"It's a very good tool to use and everybody is very happy with it."
"The NetProbe carries over 100 samplers which are capable of monitoring hardware, OS, and the application layer."
"The ability to logically normalize data gathered from multiple types of sources via pre-built plugins is extremely powerful. This functionality, coupled with the ability to import custom data via the Toolkit plugin allows Geneos to be leveraged to monitor every system in the enterprise."
"Our support team can monitor our applications and servers easily and we were able to reduce the time in finding errors and providing a solution."
"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."
"We are using Nagios Core on a VM and it's working very well, even though the specs of the VM are very low because it doesn't require much storage."
"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."
"Provides timely notifications."
"Nagios Core is stable."
"This is probably the greatest advantage of Nagios - it can be customized to a degree to suit your monitoring needs."
"It is fairly easy to set up, and we can monitor pretty much everything we want to."
"We have the ability right now to see and create reports to tell whether or not we're meeting our SLAs on our production servers, through it."
"The solution's most valuable feature is that it offers proper alerting capabilities."
 

Cons

"The graphical interface is nice but could be improved."
"The interface can sometimes be a little complicated."
"There is are issues with the compatibility of plugins with AIX servers."
"We sometimes experienced disconnects of the gateways which was a hard one to resolve."
"ITRS have started to make some major changes that we haven't taken on board yet, in the creation of dashboards and more visibility of the metrics that we collect. At the moment, that's something that's lacking, but I know they have addressed it. Still, it’s not that easy to create stuff to help with visibility and dashboarding in Geneos."
"Currently, it is difficult to monitor secure websites using SSL or with SSO enabled."
"At the moment Geneos is excellent and handling real time monitoring, however not great at doing historical reporting."
"The main feature that needs work is the Dashboard designer. Currently we have to export metrics data in real-time into some other visualization tools in order to get better picture and have a bit more functional dashboard."
"Don't use it. If you're starting from scratch, there are products that scale better and perform better, and they use the same plugin syntax as they were initially Nagios forks."
"Nagios Core could improve by adding a user interface. If you want the user interface you have to use Nagios XI."
"Setup is bit complicated due to the large set of libraries it needs, but this may be because it's open source."
"The tool needs to improve the integrations."
"Cloud monitoring is an area for improvement because there aren't too many plugins available."
"Making it a little easier to configure and set up from the start would help. There are multiple layers that you have to wade through to be able to set it up, to do it the right way, and to get it to do what you want it to do."
"Bandwidth monitoring is the pain point for me because Nagios Core does not monitor bandwidth effectively like Cacti does."
"When compared to earlier versions, it looks like 4.x has lost the statusmap.cgi module."
 

Pricing and Cost Advice

"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."
"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."
"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 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."
"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 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 pricing seems reasonable. We're happy enough with it."
"It's free."
"We are using the free version."
"Nagios Core is free to use."
"We are using the free version of Nagios Core."
"Most the plugin features are free."
"The solution is expensive."
"The enterprise version has technical support. The version we are using is free."
"Nagios Core is a cheap solution."
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Top Industries

By visitors reading reviews
Financial Services Firm
61%
Construction Company
6%
Computer Software Company
6%
Outsourcing Company
4%
Manufacturing Company
10%
Comms Service Provider
10%
Computer Software Company
8%
Financial Services Firm
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business6
Midsize Enterprise12
Large Enterprise40
By reviewers
Company SizeCount
Small Business20
Midsize Enterprise11
Large Enterprise24
 

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.
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: April 2026.
896,942 professionals have used our research since 2012.