# Nagios
Nagios Core is our original open-source monitoring solution, developed for and supported by hundreds of community members. Create your ideal monitoring and alerting tool with a flexible and extensible monitoring architecture.
Over 10,000 Commercial customers and countless community users trust Nagios to monitor their environment. No matter the industry, you can accomplish it all with Nagios.
## Nagios Commercial Solutions
### Nagios XI
Monitor your entire IT infrastructure quickly with the most powerful monitoring solution on the market.
### Nagios Log Server
Quickly and easily view, analyze, and archive logs from any source in one central location.
### Nagios Network Analyzer
See where your bandwidth is dipping or spiking with our commercial grade netflow data analysis solution.
### Nagios Fusion
Using Nagios Fusion you gain a centralized visual operational status and enables faster problem resolution over your entire network.
## Nagios Core Resources
Nagios Frontends
Web interfaces, themes, Windows and Linux interfaces, and mobile apps for Nagios. Change the look and style of Nagios to suit your needs.
[View Page](https://www.nagios.org/downloads/nagios-core-frontends/)
See additional projects that extend Nagios Core’s functionality.
[View Page](https://www.nagios.org/downloads/nagios-core-addons/)
|
[Datacenter monitoring](/readme/architect/monitoring/nagios/datacenter-monitoring.md)
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://book.konstantinsecurity.com/readme/architect/monitoring/nagios.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.