Nagios Core is a powerful open source monitoring engine with support for plugins, add-ons, NCPA, Mod-Gearman, and community-driven integrations.

Download Nagios Core, XI, plugins and agents for free. Monitor Windows, Linux & network infrastructure with the world's most trusted monitoring solution.

Configure Nagios to monitor critical IT infrastructure components, including system metrics, network protocols, applications, services, servers, and network infrastructure.

Nagios is a powerful tool that provides you with instant awareness of your organization’s mission-critical IT infrastructure. Nagios allows you to detect and repair problems and mitigate future …

Nagios, the industry-standard in IT infrastructure monitoring, provides insights into system performance and availability. Learn about Nagios' history, mission, and core principles.

Trusted by 1M+ users worldwide, Nagios provides complete monitoring of your entire IT infrastructure environment – including websites, DNS, servers, routers, switches, services, …

Nagios is a powerful monitoring system that enables organizations to identify and resolve IT infrastructure problems before they affect critical business processes.

Nagios XI also includes graphs and reports, customizable dashboards and views, an integrated DB, a backend API, multi-tenancy, and many other advanced features that will make it much …

Download Nagios Core - the world's #1 open source monitoring solution. Free network monitoring software trusted by 1M+ users for server monitoring, website monitoring, and infrastructure …

In addition to including individual Open Source Software components, the Nagios CSP distribution includes a pre-made virtual machine of a free edition of Nagios XI – our flagship monitoring …