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Nagios Core
5
13
4
13
3
7
2
1
1
0
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Open-source IT infrastructure monitoring & alerting solution
Table of Contents
Nagios Core - 2026 Pricing, Features, Reviews & Alternatives
All user reviews are verified by in-house moderators and provider data by our software research team. Learn more
Last updated: January 2026
Nagios Core overview
What is Nagios Core?
Nagios Core is an open-source IT infrastructure monitoring and alerting solution designed to help businesses monitor mission-critical infrastructure components such as network protocols, operating systems, applications, systems metrics, and network infrastructure via a unified platform. It enables IT professionals to receive alerts when critical components fail and recover via email, custom script, or text messages.
It provides a host of features such as FTP monitoring, infrastructure management, data visualization, analytics, mail server monitoring, user management, and more. Nagios Core offers an API, which lets businesses integrate the system with several third-party platforms, enabling businesses to push and pull data across systems.
Nagios Core’s user interface
Nagios Core pros, cons and reviews insights
To determine these pros and cons insights, we analyzed responses from
Overall rating
Value for money
4.5
Features
4.1
Ease of use
3.5
Customer support
3.4
Reviews sentiment
What do users say about Nagios Core?
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.
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Who uses Nagios Core?
Based on 34 verified user reviews.
Company size
Small Businesses
Midsize Businesses
Enterprises
Top industries
Use cases
Nagios Core's key features
Most critical features, based on insights from Nagios Core users:
All Nagios Core features
Features rating:
Nagios Core alternatives
Nagios Core
Starting from
Free
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Nagios Core pricing
Value for money rating:
Starting from
Free
User opinions about Nagios Core price and value
Value for money rating:
To see what individual users think of Nagios Core's price and value, check out the review snippets below.
Carlos H.
Consultor
Seth K.
IT Manager
Nagios Core support options
Typical customers
Platforms supported
Support options
Training options