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Icinga 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

Icinga
Ranking in Network Monitoring Software
38th
Ranking in IT Infrastructure Monitoring
47th
Average Rating
7.6
Reviews Sentiment
6.1
Number of Reviews
17
Ranking in other categories
Server Monitoring (16th), Cloud Monitoring Software (34th)
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 Icinga is 1.2%, down from 3.4% 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%
Icinga1.2%
Other97.3%
Network Monitoring Software
 

Featured Reviews

Harrison Bulley - PeerSpot reviewer
Senior Infrastructure Engineer at Net Consulting
A stable, scalable and cost-effective solution that helps with inbuilt scripts for easy modification
I think the software is quite good, but we have had problems with getting it to recognize certain areas and amend certain checks, where we needed so we would have to create backend scripts for those checks. Though, being open source, it has the support to create backend scripts, it would be better to have these scripts in-built.
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 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."
"People should know that it is simple and advanced."
"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."
"It is really easy in Icinga to create your own plugin and integrate it without any fuss. And it works just perfectly fine."
"The value of Icinga is that it has hundreds of plugins, so it's really easy to monitor pretty much anything."
"The most valuable feature is one that not many are even aware of, as Icinga has a self-healing event handler where if the service is down, it is automatically restarted, and you can configure the handler to take action after the critical alarm without human interaction."
"The apply rules feature saves a lot of time."
"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."
"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."
"It is fairly easy to set up, and we can monitor pretty much everything we want to."
"The good thing about Nagios Core is it covers everything."
"The scalability of Nagios Core is very good, we can add as many hosts as we like, and we can work with the concept master and client, making it very scalable and easy to use."
"The most valuable feature depends on the project. It's great if you need to check to ensure a service is running 24/7. I can use the full solution for free, and it's flexible. If I need to add a dashboard, I can integrate it with Nagios. Cloud synchronization is wonderful."
"You should really try Nagios; it will help a lot and I have found that it is the best buddy for system admins."
"The most valuable feature depends on the project; it's great if you need to check to ensure a service is running 24/7, I can use the full solution for free, and it's flexible."
"The reporting structure and the feature set are valuable to me."
 

Cons

"At this time, the layout of the website is a bit difficult. It should be more user-friendly for changing the background and logos."
"Icinga is a complex solution that's hard to learn. It's a powerful product for monitoring, but new users will have a hard time figuring out what to do."
"It is not really adequate for our current needs. It causes additional issues which we have to work around and takes us time that a better solution would not."
"One of the areas that are frustrating is remote monitoring for more than one machine."
"The user interface should be improved."
"It needs Trap SNMP. I saw the documentation for Zabbix, that it has its own built-in product which handles SNMP traps, and there's nothing similar in Icinga or Nagios. I think this feature is most important for me."
"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."
"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."
"The dashboard and monitoring features could be improved."
"Lessening the price point would be an improvement."
"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 SLA. I'm currently working on Nagios Digger, which has many code-level problems."
"I would like to see a sensor that shows the traffic of a user and what they're doing on the network."
"Nagios Core would benefit from aggregations if a particular server goes down."
"I would like to see more training videos."
"Default interface is clunky and slow."
 

Pricing and Cost Advice

"It is cost-effective, and the return on investment can be very interesting because the price is low."
"The product is inexpensive compared to other DBM products."
"The solution is free to use."
"It's an open-source solution."
"We're using the free version of Icinga."
"The solution is cheap."
"This is an open-source solution with paid support."
"Even though Icinga's financial cost is low, it is an expensive product regarding the resources required to maintain and operate it."
"It's free."
"We are using the free version of Nagios Core."
"The enterprise version has technical support. The version we are using is free."
"We have saved a lot of time, money, and effort in reducing disaster times, which is owed to Nagios quick alerting."
"Lessening the price point would be an improvement."
"We are using the free version."
"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."
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Top Industries

By visitors reading reviews
Educational Organization
14%
Comms Service Provider
10%
Financial Services Firm
10%
University
8%
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 Business9
Midsize Enterprise4
Large Enterprise8
By reviewers
Company SizeCount
Small Business20
Midsize Enterprise11
Large Enterprise24
 

Questions from the Community

What is your experience regarding pricing and costs for Icinga?
It is cost-effective, and the return on investment can be very interesting because the price is low. If you want to include this product in the services you offer to your customers, the return on i...
What needs improvement with Icinga?
There is room for improvement in multi-tenancy. It's not perfect, not even really good. It's average, but it should be improved. For instance, multi-tenancy for monitoring the virtual infrastructur...
What is your primary use case for Icinga?
We use Icinga as a monitoring solution to monitor customers' infrastructures. We work as a managed service provider, so we offer monitoring and many other services to our customers. So we use it in...
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

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: April 2026.
896,563 professionals have used our research since 2012.