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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
27th
Ranking in IT Infrastructure Monitoring
31st
Average Rating
7.6
Reviews Sentiment
6.1
Number of Reviews
17
Ranking in other categories
Server Monitoring (12th), Cloud Monitoring Software (26th)
Nagios Core
Ranking in Network Monitoring Software
11th
Ranking in IT Infrastructure Monitoring
10th
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 May 2026, in the Network Monitoring Software category, the mindshare of Icinga is 1.3%, down from 3.4% compared to the previous year. The mindshare of Nagios Core is 1.6%, down from 3.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software Mindshare Distribution
ProductMindshare (%)
Nagios Core1.6%
Icinga1.3%
Other97.1%
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

"We monitor all, starting from UPS to international mail chains."
"People should know that it is simple and advanced."
"Icinga2 was designed to delegate, distribute and balance tasks between several nodes."
"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."
"This solution has a self-healing handler where if the service is down, it is automatically restarted."
"The apply rules feature saves a lot of time."
"Macros and the ability to connect it to Google Maps are valuable features."
"It is really easy in Icinga to create your own plugin and integrate it without any fuss. And it works just perfectly fine."
"I like that it's very simple to install, easy to manage and deploy, and easy to use for monitoring."
"This is probably the greatest advantage of Nagios - it can be customized to a degree to suit your monitoring needs."
"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."
"It is fairly easy to set up, and we can monitor pretty much everything we want to."
"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."
"I would rate the overall solution ten points out of ten."
"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."
"We mostly use Nagios Core to integrate with Python and Bash Script."
 

Cons

"The connection between Icinga and Icinga Web."
"Sometimes, it is very hard to keep an overview of what's happening."
"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."
"One thing that Icinga lacks is the capability to create advanced and customized dashboards within the tool itself."
"The tool currently fails to provide notifications to users."
"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 installation and configuration are very complex."
"One of the areas that are frustrating is remote monitoring for more than one machine."
"Nagios Core could improve by adding a user interface. If you want the user interface you have to use Nagios XI."
"It is a bit slow due to latency."
"When compared to earlier versions, it looks like 4.x has lost the statusmap.cgi module."
"I would like to see a much better Nagios Manager GUI that can support all type of configuration items, and advance search options."
"Bandwidth monitoring is the pain point for me because Nagios Core does not monitor bandwidth effectively like Cacti does."
"Nagios Core would benefit from aggregations if a particular server goes down."
"The scalability needs improvement, it's not scalable at this time."
"I would like to see more training videos."
 

Pricing and Cost Advice

"It's an open-source solution."
"Even though Icinga's financial cost is low, it is an expensive product regarding the resources required to maintain and operate it."
"We're using the free version of Icinga."
"The solution is cheap."
"This is an open-source solution with paid support."
"The solution is free to use."
"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."
"I would rate the solution's pricing an eight out of ten."
"We are using the free version."
"The product is cheaply priced."
"It's free."
"We are using the open-source, unpaid version."
"Nagios Core is a cheap solution."
"Nagios Core is free to use."
"Lessening the price point would be an improvement."
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Top Industries

By visitors reading reviews
Educational Organization
14%
Comms Service Provider
11%
Financial Services Firm
10%
Manufacturing Company
7%
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.
896,099 professionals have used our research since 2012.