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Nagios Core vs Netreo comparison

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Comparison Buyer's Guide

Executive Summary

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

Nagios Core
Ranking in IT Infrastructure Monitoring
16th
Average Rating
8.2
Reviews Sentiment
7.3
Number of Reviews
51
Ranking in other categories
Network Monitoring Software (19th)
Netreo
Ranking in IT Infrastructure Monitoring
57th
Average Rating
7.0
Reviews Sentiment
7.3
Number of Reviews
1
Ranking in other categories
Cloud Monitoring Software (35th)
 

Mindshare comparison

As of September 2026, in the IT Infrastructure Monitoring category, the mindshare of Nagios Core is 1.5%, down from 3.2% compared to the previous year. The mindshare of Netreo is 0.9%, up from 0.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
IT Infrastructure Monitoring Mindshare Distribution
ProductMindshare (%)
Nagios Core1.5%
Netreo0.9%
Other97.6%
IT Infrastructure Monitoring
 

Featured Reviews

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.
reviewer1803231 - PeerSpot reviewer
Engineer at a legal firm with 201-500 employees
Provides a stable solution but would improve by developing an all-in-one-solution
The advice I would give to anyone looking at implementing Netreo into their organization would be to do your market research and evaluate the product, do not just choose it because someone recommends it to you. Overall, from my perspective, I would rate the solution a seven out of ten.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"Provides timely notifications."
"The solution is very complete and mostly easy to manage."
"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."
"This is probably the greatest advantage of Nagios - it can be customized to a degree to suit your monitoring needs."
"Before we implemented Nagios, we did not know which servers were up or down until a customer told us, and now I can see trends over time and it gives me perspective of what needs to be improved so we are able to work proactively as opposed to reactively."
"We mostly use Nagios Core to integrate with Python and Bash Script."
"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."
"The most valuable features are the reports and the way it generates the report in a graphical manner."
"The technical support team at Netreo is pretty good."
 

Cons

"We're using the free version, which limits us in terms of the things that we can do. If we had the paid version, a lot of our issues would probably go away. For example, we can't isolate instances that are being built or updated with the production ones. When they're being built, on Nagios, they're showing in red. It'd be nice to be able to partition those off until they're all green, and then we can bring them into the environment. This is probably because we've got the free version and not the paid version. If we went for the paid version, it would probably allow us to do exactly what we want to or remove the restrictions that we have, but if we are able to isolate instances in the free version, it would make life much easier."
"Default interface is clunky and slow."
"Nagios SLA. I'm currently working on Nagios Digger, which has many code-level problems."
"It's not that easy to install the product itself. Also, the UI is a bit hard for regular users to navigate through."
"This solution is not scalable at all. If you want to add an AI, or if you wanted to monitor different types of metrics, you won't get the most out of it."
"The UI is a little outdated and graphics could be displayed in a better way."
"Nagios Core can improve the graphical interface, it would make things a little easier."
"We use the free version of Nagios, which needs some administrative skills in order to configure correctly."
"The scalability of Netreo is lacking."
 

Pricing and Cost Advice

"We have saved a lot of time, money, and effort in reducing disaster times, which is owed to Nagios quick alerting."
"It's free."
"The solution is expensive."
"We are using the open-source, unpaid version."
"I would rate the solution's pricing an eight out of ten."
"Most the plugin features are free."
"Nagios Core is free to use."
"The product is cheaply priced."
Information not available
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Top Industries

By visitors reading reviews
Comms Service Provider
10%
Manufacturing Company
8%
Financial Services Firm
7%
Outsourcing Company
7%
Comms Service Provider
11%
Construction Company
11%
Outsourcing Company
9%
Financial Services Firm
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business20
Midsize Enterprise11
Large Enterprise24
No data available
 

Questions from the Community

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...
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Comparisons

 

Also Known As

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CloudMonix
 

Overview

 

Sample Customers

Airbnb, Cisco, PayPal, FanDuel
Information Not Available
Find out what your peers are saying about Datadog, Zabbix, Splunk and others in IT Infrastructure Monitoring. Updated: August 2026.
914,262 professionals have used our research since 2012.