Nagios Core 2026: Benefits, Features & Pricing

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Overview
Pricing and Plans
Features
User Reviews

Overview

Nagios Core

4.1

(34)

Pricing

Pricing available upon request

About Nagios Core

Nagios Core is an open-source IT infrastructure monitoring solution that helps businesses monitor various components including applications, network protocols, system metrics, network infrastructure and operating systems. It enables users to gain a central view of companys' entire IT operations network and business processes.

The platform allows IT teams to view the relevant infrastructure status, using multi-user access to web interface capability. Nagios Core also offers user-specific views, which lets clients view only the infrastructure components they are authorized for.

Nagios Core Screenshots

Nagios Core Pricing and Plans

Starting price: Pricing available upon request

Free Trial

Free Version

Nagios Core Features

Popular features found in Website Monitoring
Activity Dashboard
Availability Testing
Data Visualization
Event Logs
Real-Time Notifications
Server Monitoring
Transaction Monitoring
Uptime Reporting
Visitor Tracking
More features of Nagios Core
Alerts/Notifications
API
FTP Monitoring
Mail Server Monitoring
User Management

Nagios Core User Reviews

Overall Rating

4.1

Ratings Breakdown

38%

41%

18%

Secondary Ratings

Ease of Use

3.4

Value for money

4.5

Customer support

3.5

Functionality

4.2

Thomas R.

Verified reviewer

Computer Games

2-10 employees

Used daily for more than 2 years

Review source

Reviewed December 2019

Nagios can save your money

Previously 4

We are using Nagios Core for several years and it helps us to detect problems in our infrastructure sooner than our customers. We are using Nagios Core which is free, but if you want more features, you should buy Nagios XI version.

Ratings Breakdown

Ease of use

Previously 3

Value for money

Customer support

Previously 3

Functionality

Previously 4

Pros:

*It is free of charge *It is open-source *So many monitoring plugins and addons are available *Big community *There are many how-to articles

Cons:

*There is no auto-discovery function, every host and service must be added manually. *Nagios web frontend is not user-friendly and you propably will use something like Thruk addon which provide better Web UI. *Hard to configure

Stefano S.

Verified reviewer

Information Technology and Services

Self-Employed

Used daily for more than 2 years

Review source

Reviewed April 2024

A powerful and open source monitoring software that can satisfy company needs

Ratings Breakdown

Ease of use

Value for money

Functionality

Pros:

It is open and it can connect to potentially everything. Also as it is open source you can try it withound spending money. Lately maintenance costs, if you decide to pay for commercial support, is quite high.

Cons:

Software is quite easy to use and it is opensource but the commercial support is starting to be quite high. At this point it could be useful to evaluate other commercial products as it appears that it could be really expensive. The alternative is to use it without the commercial support but maybe some integrations cannot be done and also if you are a company maybe you could be in the need of support and then you have to buy commercial support.

Verified

Reviewer

Information Technology and Services

51-200 employees

Used daily for more than 2 years

Review source

Reviewed August 2020

Nagios IT Asset monitoring and Performance

Due to complexity of configuration we switched to Manage Engine OpManager suite

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

Nagios is a powerful monitoring tool with a variety of monitoring assets and protocols.

Cons:

The tool and monitoring configuration is complex and not optimal for not highly experienced system administrators

Seth K.

Verified reviewer

Individual & Family Services

51-200 employees

Used daily for more than 2 years

Review source

Reviewed September 2022

Nagios Core - Significant up front investment of time, but still a solid option

Ratings Breakdown

Ease of use

Functionality

Pros:

Free, open-source solution with a long track record for IT infrastructure monitoring. Vibrant community contributing to the core project, as well as plugins. Also, lots of 3rd party integrations to further extend capabilities as needed.

Cons:

There are easier solutions to use if you are starting from scratch, many of which are derivatives of Nagios. I wouldn't recommend Nagios unless you are comfortable using Linux and doing configuration changes from the command line. Also, version 4.4.7 has a bug that requires a workaround

Reasons for choosing Nagios Core

Existing configuration was easier to upgrade versus starting new

PEDRO L.

Telecommunications

11-50 employees

Used daily for less than 2 years

Review source

Reviewed April 2018

Nagios is a platform created to monitor network services and member teams of the same.

Nagios is a service mainly used to monitor the components of a network, it gives you the benefit that in case of any failure such as high latencies, packet loss or total loss, nagios issues alerts quickly so that you can solve the problem as soon as.

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

- The main advantage of nagios is that it allows you to be aware of the status of each host and services belonging to a network. - Another advantage that nagios has is that it has several types of alerts, with which it indicates the type of failure that a host can present and thus be able to solve it as quickly as possible. - Nagios allows you to integrate with other platforms, something that enriches the amount of benefits you can get from this service. - A very good advantage of Nagios is that its code is open, which allows you to make changes and adjustments according to the needs you have in your network.

Cons:

- Something that would be good to improve in nagios is the fact that by increasing the amount of host in the network, the update takes a little longer, causing some delay in the alerts that can be issued. - It would also be good to create a version with the basic functions and easy installation for users with little experience, since to configure nagios requires a certain level of knowledge with free software.

Paul P.

Verified reviewer

Retail

501-1000 employees

Used daily for more than 2 years

Review source

Reviewed December 2022

Nagiis Core us good free tools

Ratings Breakdown

Ease of use

Functionality

Pros:

it's free product, no need pay for add Monitoring

Cons:

it is a difficult product to maintain, we need a continuous nagios administrator

Carlos Hugo Martin C.

Verified reviewer

Information Technology and Services

11-50 employees

Used daily for less than 12 months

Review source

Reviewed January 2022

Experience with Nagios Core

Small data center monitoring

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

Its ease of use and implementation for basic monitoring.

Cons:

Its complexity for integration with other monitoring tools, either as a hub or as a data source. When more advanced monitoring is required or for a specific technology, you have to resort to third-party tools.

ISAIAS S.

Telecommunications

11-50 employees

Used daily for less than 6 months

Review source

Reviewed April 2018

Nagios is a software created for the constant monitoring of equipment and network services

Nagios is a platform that allows you to effectively monitor all the components or elements of a network. It offers several types of alerts with which you can identify the type of failure that the host or service may be presenting.

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

Among the advantages offered by nagios, is the fact that you can monitor all the equipment and services you have in a network, in this way you can know the status of each one, something that is very useful to validate that everything is working correctly in network. Another advantage that nagios has is that it gives you several types of alerts, it shows you if a host is missing packages, if it has high latencies or if it is completely down, this is useful because it helps you to better detect the type of failure that may occur . Nagios also offers you the implementation with other platforms, which is useful when you monitor a network and at the same time use other tools to manage it.

Cons:

Something that does not have very in favor nagios is that when the network is very large it takes a long time to update, which generates some delay in the alerts that can emit some host. Another disadvantage that nagios has is that the configuration is somewhat complex, which requires high knowledge in that area.

Kyler M.

Verified reviewer

Higher Education

51-200 employees

Used daily for more than 2 years

Review source

Reviewed March 2019

Free Networking Monitoring Software

Ratings Breakdown

Ease of use

Functionality

Pros:

Nagios Core is free to purchase and install that can track almost any network device on your network. The graphs and what it tracks is fascinating to watch with real time data.

Cons:

The setup and installation is the main headache about this software. It must run on Linux and is very hard to configure unless you are very familiar with UNIX coding.

Verified

Reviewer

Construction

51-200 employees

Used daily for less than 6 months

Review source

Reviewed January 2019

Nagios Core Review

Nagios Core has been helping me keep an eye on all the servers and storage space on any device. As soon as it gets to a certain load limit, it will notify me and I can fix it before it's too late.

Ratings Breakdown

Ease of use

Value for money

Customer support

Functionality

Pros:

Nagios Core is easy to set up and use. Monitors all your servers and services on any chosen device on your network all on just one screen. If anything turns off or goes wrong, you will know as soon as it happens and can fix it right away. Amazing overview tool to keep an eye on anything on your network.

Cons:

Email notifications are a bit of a pain to set up if you're using an external exchange server like Office 365, and not hosting your own.

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