Comprehensive IT Infrastructure Monitoring

Provides monitoring of all mission-critical infrastructure components including applications, services, operating systems, network protocols, systems metrics, and network infrastructure. Hundreds of third-party addons provide for monitoring of virtually all in-house and external applications, services, and systems.


The powerful Nagios Core 4 monitoring engine provides users with the highest degree of monitoring server performance. High-efficiency work processes allow for nearly limitless scalability and monitoring effectiveness. The Nagios Core monitoring engine is trusted by millions of users worldwide.


Provides a central view of your entire IT operations network and business processes. User customizable dashboards provide at-a-glance access to key monitoring information and visualizations. Views provide users with quick access to the information they find most useful.

Proactive Planning & Awareness

Integrated trending and capacity planning graphs allow organizations to plan for infrastructure upgrades before outdated systems catch them by surprise. Alerts are sent to IT staff, business stakeholders, and end users via email or mobile text messages, providing them with outage details so they can proactively resolve issues before they affect critical business processes.


A powerful GUI provides for customization of layout, design, and preferences on a per-user basis, giving your customers and team members the flexibility they want. Admins can also create dashboards and notification preferences and deploy setting to users in bulk.

Ease of Use

GUI-based configuration wizards guide users through the process of monitoring new devices, services, and applications – all without having to understand complex monitoring concepts. Advanced configuration interface lets admins hand out control of managing monitoring configuration, system settings, and more to end users and team members easily.

Multi-Tenant Capabilities

Multi-user access to web interface allows stakeholders to view relevant infrastructure status. User-specific views ensure clients only see the infrastructure components they’re authorized for. Advanced user management simplifies administration by allowing you to manage user accounts easily. New user accounts can be provisioned with a few clicks, or imported from Active Directory or LDAP servers.

Extendable Architecture

Thousands of community-developed add-ons can extend monitoring and native alerting functionality. Additionally, custom components and configuration wizards can be added to allow the interface to be tailored to any organizations needs, providing simple integration with in-house and third-party applications.


What are other people saying?

“Nagios is an integral part of our infrastructure. By notifying us immediately of a service outage, we were able to rectify the issue before our customers and end users experienced any problems.”

-Jared Bird, Network Security Admin
Sunrise Community Banks

“With Nagios, the efficiency and proactivity levels of the human and technological resources were raised. The troubleshooting time decreased. Valuable and precise information is presented when needed in well organized reports.”

– Marco Aponte, E-Services S.R.L.

“Sysadmin and development staff actually slept through the night. Nagios fixed problems as they arose, and uptime from the site as an aggregate increased from ~85% to over 98% annually.”

-Eric Loyd, CEO

Frequently Asked Questions

The Nagios XI system is comprised of two categories of licensed code: 1) Open Source foundation cores and components like Nagios Core, PNP, and NDOUtils and 2) the Nagios XI UI and system frameworks. The Nagios XI UI and system frameworks are released under a commercial license and contain some code used under license by Nagios Enterprises that cannot be released under an OSS license. Purchasing a Nagios XI license grants you a perpetual license to use the XI UI and system frameworks, including the licensed code.

Yes! Nagios XI is available free of charge for monitoring small environments. Nagios XI installations with a free license are limited to monitoring seven (7) hosts (nodes). There is no limitation on the number of services that can be monitored with a free license. Students may qualify for increased or unrestricted monitoring limits based on their needs and qualifications.

Nagios XI is supported by our team of professionals. Forum, email and support is included in the base license price for Nagios XI. Optional phone support contracts are available to customers who require additional support services.

Yes! Manual installation to physical servers is recommended. Server must be RHEL or CentOS. We also distribute Nagios XI as a virtual machine to allow you to get it up and running quickly.

Yes! Migrating both standalone and distributed Nagios Core environments to Nagios XI is possible. Contact us if you would like professional assistance with migration.

Yes! Nagios XI is designed with extensibility in mind. Because Nagios XI uses Nagios Core as a monitoring engine, you can use your custom Nagios plugins and event handlers, as well as community addons to extend XI’s native functionality.

We think it means really great things for the long run. First, we’re dedicated to maintaining and developing Nagios Core for the long term. Ethan Galstad – original creator and “Father” of Nagios – is actively involved in the design and development of XI and knows that its long-term success depends on a solid foundation of proven, Open Source components like Nagios Core. We believe Nagios XI benefits the Open Source project by providing increased resources and further improvements in terms of scalability and extensibility. Nagios is more than just the OSS monitoring core – its an entire ecosystem of thousands of addons, extensions, and contributors worldwide. We will continue to further expand and contribute to the community as the result of our work with Nagios XI and our customers.

Other Questions

Read the full technical FAQ section at support.nagios.com

Have other questions related to Nagios XI? Feel free to contact us and we’ll get you the answers.

Nagios XI Pricing

License Levels

Nagios XI is available in three different license levels: 100 Node, 200 Node, and Unlimited Node. A node is anything with an IP address or unique hostname that you would like to monitor (switches, routers, firewalls, workstations, and other network devices). There are no restrictions on the number of services that can be monitored. Each license includes twelve months of maintenance (upgrade entitlements) and email support.

Standard Edition vs. Enterprise Edition

Nagios XI is available in two different editions: Standard Edition and an Enterprise Edition. The Enterprise Edition provides users with additional functionality and includes features that are designed to aid in large-scale configuration, forecasting, and scheduled reporting. A complete comparison of features between the two editions can be found here. Each license includes twelve months of maintenance (upgrade entitlements) and email support.

Standard Edition
100 Node: $1,995

200 Node: $2,995

Unlimited Node: $4,995

  • Easy Configuration Wizards
  • GUI Configuration
  • Advanced Reporting
  • Enhanced Visualizations
  • Custom User Dashboards
  • Custom User Views
  • Executive Summary Report
  • Custom Actions
  • Notification Escalations
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Enterprise Edition
100 Node: $3,495

200 Node: $4,495

Unlimited Node: $6,495

  • Everything in Standard Edition Plus:
  • Scheduled Reports
  • Capacity Planning Reports
  • Web-Based Server Console Access
  • Bulk-Modification Tools
  • Audit Logging
  • Advanced Auto-Discovery
  • Dashboard/Notification Deployment
  • Automated Host Decommissioning
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*Note: Enterprise Edition licenses require annual renewal of Maintenance & Support - or - Maintenance-Only contract.

Already have Nagios XI and looking to renew? View our renewal plans.

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