GroundWork Monitor vs Nagios Core comparison

GroundWork and Nagios are both solutions in the Network Monitoring Software category. GroundWork is ranked #104, while Nagios is ranked #10 with an average rating of 8.7. GroundWork holds a 0.3% mindshare in NMS, compared to Nagios’s 1.9% mindshare. Additionally, 100% of GroundWork users are willing to recommend the solution, compared to 80% of Nagios users who would recommend it.

GroundWork Monitor

Read 1 GroundWork Monitor review

945 Views
510 Comparison Views

100% willing to recommend

Nagios Core

Read 51 Nagios Core reviews

5,494 Views
4,505 Comparison Views

80% willing to recommend

GroundWork Monitor

Nagios Core

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Executive Summary

We performed a comparison between GroundWork Monitor and Nagios Core based on real PeerSpot user reviews.

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Network Monitoring Software

March 2026

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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

GroundWork Monitor

Ranking in Network Monitoring Software

104th

Ranking in IT Infrastructure Monitoring

76th

Average Rating

8.0

Reviews Sentiment

8.0

Number of Reviews

Ranking in other categories

IT Operations Analytics (21st), Cloud Monitoring Software (50th)

Nagios Core

Ranking in Network Monitoring Software

10th

Ranking in IT Infrastructure Monitoring

10th

Average Rating

8.2

Reviews Sentiment

7.3

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of March 2026, in the Network Monitoring Software category, the mindshare of GroundWork Monitor is 0.3%, up from 0.1% compared to the previous year. The mindshare of Nagios Core is 1.9%, down from 3.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Network Monitoring Software Mindshare Distribution
Product	Mindshare (%)
Nagios Core	1.9%
GroundWork Monitor	0.3%
Other	97.8%

Network Monitoring Software

Featured Reviews

it_user186582

Sr PC/Client Server Analyst II at a individual & family service with 10,001+ employees

It's easy to setup and the plugins are easy to write. When we need to, the threshold is easy to change.

It's easy to setup and the plugins are easy to write. When we need to, the threshold is easy to change It would be nice to have a centralized client-settings management. At the moment, the client settings have to be changed individually. I've used it since 2011. The deployment of the new server…

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Husham Yaqoob

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.

Read full review

Quotes from Members

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

Pros

"It's easy to setup and the plugins are easy to write."

"Nagios Core integrates with tools like Splunk, Datadog, or Dynatrace. It is usually used as a feed to provide more technical information about devices or hosts to another system."

"Nagios doesn't get the respect it deserves; most likely due to the fact that it doesn't have a licensing cost."

"I would rate the overall solution ten points out of ten."

"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."

"Our customers like that Nagios Core is an open source solution. It can be customized to our customers' specific needs."

"The good thing about Nagios Core is it covers everything."

"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."

"This is a fit for purpose product which means that if you have a definite list of requirements and are not willing, or unable, to spend money on big enterprise tools, then Nagios is a tool to go to."

More Nagios Core pros

Cons

"Deploying an agent leaves much to be desired."

"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."

"Bandwidth monitoring is the pain point for me because Nagios Core does not monitor bandwidth effectively like Cacti does."

"The scalability needs improvement, it's not scalable at this time."

"The alerting mechanism in Nagios Core could be improved."

"The configuration and reporting modules need to be improved."

"It is a bit slow due to latency."

"Default interface is clunky and slow."

More Nagios Core cons

Pricing and Cost Advice

Information not available

"We are using the open-source, unpaid version."

"Nagios Core is a cheap solution."

"Lessening the price point would be an improvement."

"We have saved a lot of time, money, and effort in reducing disaster times, which is owed to Nagios quick alerting."

"We are using the free version."

"Most the plugin features are free."

"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."

"Nagios Core is an open source solution, and there are no licensing fees."

More Nagios Core pricing and cost advice

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Top Industries

By visitors reading reviews

No data available

Manufacturing Company

10%

Comms Service Provider

10%

Computer Software Company

Government

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

By reviewers
Company Size	Count
Small Business	20
Midsize Enterprise	11
Large Enterprise	23

Questions from the Community

Ask a question

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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.

See all answers

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.

See all answers

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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Compared 7% of the time

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Compared 6% of the time

Zabbix vs Nagios Core

Compared 5% of the time

Centreon vs Nagios Core

Compared 5% of the time

Nagios XI vs Nagios Core

Compared 5% of the time

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Product Reports

Buyer's Guide

Network Monitoring Software

March 2026

Download GroundWork Monitor product report

Buyer's Guide

Nagios Core

March 2026

Download Nagios Core product report

Also Known As

GWOS

No data available

Overview

Open source IT infrastructure monitoring system that collects performance data for systems, applications, and security.

GroundWork

This is IT infrastructure monitoring's industry-standard, open-source core. Free without professional support services.

Nagios

Sample Customers

Swiss Life, JBFCS, Capital Markets Cooperative Research Centre

Airbnb, Cisco, PayPal, FanDuel

Buyer's Guide

Network Monitoring Software

March 2026

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