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Icinga vs Nagios Core comparison

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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

Icinga
Ranking in Network Monitoring Software
43rd
Ranking in IT Infrastructure Monitoring
51st
Average Rating
7.6
Reviews Sentiment
6.1
Number of Reviews
17
Ranking in other categories
Server Monitoring (17th), Cloud Monitoring Software (34th)
Nagios Core
Ranking in Network Monitoring Software
19th
Ranking in IT Infrastructure Monitoring
18th
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 October 2026, in the Network Monitoring Software category, the mindshare of Icinga is 1.1%, down from 2.8% compared to the previous year. The mindshare of Nagios Core is 1.3%, down from 2.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software Mindshare Distribution
ProductMindshare (%)
Nagios Core1.3%
Icinga1.1%
Other97.6%
Network Monitoring Software
 

Featured Reviews

reviewer2292201 - PeerSpot reviewer
Innovation Service Manager at a tech services company with 201-500 employees
Easy to use, and it's possible to customize the product as per the needs we may have but average multi-tenancy aspect
It's supported by the community. We use Icinga, which is not part of the Open-Source platform but is wrapped into a commercial solution from another provider, a local provider in Italy. Icinga is an open-source platform, so it is supported by the community. It's quite easy to use, and it's possible to customize the product as per the needs we may have. So it's not expensive, and it's quite a general purpose. We can easily monitor any kind of infrastructure we encounter. The ability to customize scripts and build your own queries to request information from the infrastructure elements you want to monitor. This level of personalization and customization is highly appreciated. The alerting is the same as any other monitoring platform. It's not a "wow" feature that has changed our lives, but it's perfectly adequate.
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

"I would recommend Icinga; it's an open-source solution, it's quite easy and simple to use, and checks can be run with Python code and Shell Script code."
"I like the ability to amend and adjust things really easily, which is useful in a case where you could make it auto-discover and then set a template to say all of these applications or servers under this template have an automatic threshold set that you’d set up manually."
"If you have a small infrastructure or a small number of devices that you want to monitor, then I think it's a good solution."
"The apply rules feature saves a lot of time."
"Icinga2 was designed to delegate, distribute and balance tasks between several nodes."
"An affordable solution for small organizations to do basic network monitoring."
"Icinga has multiple automation and integration features. There is an API for everything and a web UI for configurations. The APIs enable you to automate tasks in Icinga. We can also use plugins to talk to the API. The Icinga Director talks to a database in the background, and you can import settings from the CMDB to all systems in Icinga."
"The value of Icinga is that it has hundreds of plugins, so it's really easy to monitor pretty much anything."
"The reporting structure and the feature set are valuable to me."
"Reliability Security Flexibility Functionality Availability - controllability anywhere and with different methods"
"Extensibility is good as this makes it easy to write checks on your own."
"Using Nagios, I'm managing more than 1000 services, which involves the following operating nodes: IBM AIX, Red Hat Enterprise Linux, HP-Unix, Windows enterprise-grade OS, Cisco router/switches, FortiGate and WatchGuard firewalls, APC UPS systems, and many more."
"The most valuable feature of Nagios Core is it allows us to develop and add as many plugins as we want."
"Alert calls occur anytime a service goes down or a matrix is difficult and that helps us to quickly restore service and transfer work."
"This is probably the greatest advantage of Nagios - it can be customized to a degree to suit your monitoring needs."
"I would rate the overall solution ten points out of ten."
 

Cons

"The installation and configuration are very complex."
"Sometimes, it is very hard to keep an overview of what's happening."
"In general, the product does not look good. However, it does what it is supposed to do. So, the improvements should focus on usability and UI."
"One of the areas that are frustrating is remote monitoring for more than one machine."
"The user interface should be improved."
"There is room for improvement in multi-tenancy. It's not perfect, not even really good. It's average, but it should be improved."
"Icinga’s automation could be improved."
"Scalability is problematic. If you have a stable environment it's good, but if the environment is growing, I had some problems with Icinga."
"The NetEase reporting structure needs improvement, especially the availability report, which is weak."
"It would be nice if the company offered a sales or contract manager that was dedicated to our company so that we would have some sort of link to Nagios, and if we had issues or questions, we'd be able to contact them directly."
"Nagios SLA. I'm currently working on Nagios Digger, which has many code-level problems."
"The dashboard and monitoring features could be improved."
"Lessening the price point would be an improvement."
"The initial setup process could be easier."
"Nagios Core would benefit from aggregations if a particular server goes down."
"Setup is bit complicated due to the large set of libraries it needs, but this may be because it's open source."
 

Pricing and Cost Advice

"It is cost-effective, and the return on investment can be very interesting because the price is low."
"Even though Icinga's financial cost is low, it is an expensive product regarding the resources required to maintain and operate it."
"The solution is cheap."
"This is an open-source solution with paid support."
"The solution is free to use."
"We're using the free version of Icinga."
"The product is inexpensive compared to other DBM products."
"It's an open-source solution."
"Nagios Core is a cheap solution."
"It's free."
"We are using the free version of Nagios Core."
"Most the plugin features are free."
"Nagios Core is free to use."
"The solution is expensive."
"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."
"Lessening the price point would be an improvement."
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Top Industries

By visitors reading reviews
Educational Organization
14%
Comms Service Provider
13%
University
13%
Financial Services Firm
9%
Comms Service Provider
11%
Manufacturing Company
9%
Financial Services Firm
8%
Outsourcing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise4
Large Enterprise8
By reviewers
Company SizeCount
Small Business20
Midsize Enterprise11
Large Enterprise24
 

Questions from the Community

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Earn 20 points
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...
What advice do you have for others considering Nagios Core?
I want to see something that is proactive to protect me. On the basis of the data, I would like Nagios to improve. That said, I would rate the overall solution ten points out of ten.
 

Comparisons

 

Also Known As

Icinga Cloud Monitoring
No data available
 

Overview

 

Sample Customers

Puppet Labs, Audi, Spacex, Debian, Snapdeal, McGill, RIPE Network Coordination Centre
Airbnb, Cisco, PayPal, FanDuel
Find out what your peers are saying about Icinga vs. Nagios Core and other solutions. Updated: September 2026.
919,586 professionals have used our research since 2012.