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Choose the right network monitoring solution for your infrastructure needs. Download Nagios Core, XI, plugins and agents for Windows, Linux and network monitoring.

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Download Nagios Core, XI & Plugins - Free Network Monitoring Software

Open Source

Nagios Core

The original open-source monitoring solution with powerful plugin architecture and community support. Perfect for monitoring network infrastructure, servers, and applications.

Linux Windows Unix

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Windows, Linux & Mac

Nagios Cross-Platform Agent (NCPA)

Cross-platform monitoring agent that monitors Windows, Linux, and Mac systems in real-time. Lightweight agent for comprehensive system monitoring.

Real-time monitoring Lightweight

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50+ Essential Plugins

Nagios Plugins

Essential plugins including check_ping, check_ssh, check_cpu, check_memory, and more. Extend your monitoring capabilities with official plugins.

50+ plugins Official plugins

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Complete Package

Nagios Core Services Platform (CSP)

Get everything you need to start monitoring in one comprehensive package. Includes Nagios Core, plugins, and configuration tools.

Homelab Community

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Open Source Community

Check out our GitHub for more open source projects, contribute to the community, and access the latest development versions.

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Enterprise Monitoring

Nagios XI

Comprehensive monitoring solution built on Nagios Core 4 with advanced web interface, automated discovery, and enterprise features.

Advanced Web UI Auto Discovery Enterprise Features

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Log Management

Nagios Log Server

Powerful log data management with scalability, built-in failover, and comprehensive dashboards for enterprise log analysis.

Scalable Built-in Failover Dashboards

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Network Traffic Analysis

Nagios Network Analyzer

Monitor network traffic, analyze bandwidth usage, and gain insights into network flow data with comprehensive network analysis tools.

Traffic Monitoring Bandwidth Analysis Flow Data

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Centralized Management

Nagios Fusion

Centralized interface for managing multiple Nagios installations across distributed environments with unified dashboards.

Centralized Multi-site Unified Dashboard

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Need Help Choosing the Right Solution?

Our monitoring experts can help you select the right monitoring solution for your organization's specific needs and infrastructure requirements.

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Open Source Community

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Nagios CSP

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