Nagios XI

Enterprise Server and Network Monitoring Software

Comprehensive application, service, and network monitoring in a central solution.

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Our knowledgeable techs can help you get up and running with Nagios XI fast. Let us help you deploy Nagios XI with a remote-assist or quickstart that’s designed to save you time and get you off on the right foot. Schedule Quickstart

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 applications, services, and systems.


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


Provides a central view of your entire IT operations network and business processes. Powerful dashboards provide at-a-glance access to powerful monitoring information and third-party data. Views provide users with quick access to the information they find most useful.

Proactive Planning & Awareness

Automated, integrated trending and capacity planning graphs allow organizations to plan for infrastructure upgrades before outdated systems catch them by surprise.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 start resolving issues immediately.


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.

Ease of Use

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

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. Provision new user accounts with a few clicks and users automatically receive an email with their login credentials.

Extendable Architecture

Multiple APIs provide for simple integration with in-house and third-party applications. Thousands of community-developed addons extend monitoring and native alerting functionality. Custom interface and addon developments are available to tailor Nagios XI to meet your organization’s exact needs. Request a Quickstart For Nagios XI

System Requirements

These figures represent the minimum requirements to run Nagios XI. To view more detailed guidelines view our hardware requirements PDF.

Hard Drive

20 GB


2 GB


Dual core, 2.4 GHz

Operating System

CentOS or Redhat Enterprise Linux (RHEL), Ubuntu or Debian


MySQL/MariaDB, plus PostgresQL if running versions less than XI 5 or if upgrading from a pre-5 version


License Levels

Nagios XI is available in multiple different license levels: 100 Node through Unlimited Node. A node is anything with an IP address or domain 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. Each license includes twelve months of maintenance (upgrade entitlements) and email support.

Standard Edition
Starting at $1,995

  • Easy Configuration Wizards
  • GUI Configuration
  • Advanced Reporting
  • Enhanced Visualizations
  • Custom User Dashboards
  • Custom User Views
  • Executive Summary Report
  • Custom Actions
  • Dashboard Deployment
  • Notification Escalations
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Enterprise Edition
Starting at $3,495

  • Everything in Standard Edition Plus:
  • Scheduled Reports
  • Capacity Planning Reports
  • Web-Based Server Console Access
  • Bulk-Modification Tools
  • Audit Logging
  • Notification Deployment
  • SLA Reports
  • Scheduled Pages
  • Automated Host Decommissioning
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*Note: Enterprise Edition licenses require annual renewal of Maintenance & Support

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

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.
Learn more about Nagios XI license levels.

Yes! Nagios XI is available free of charge for monitoring small environments. Nagios XI installations with a free license are limited to monitoring up to seven (7) hosts (nodes) and up to 100 total host and service checks. The free license is self supported. Students may qualify for increased or unrestricted monitoring limits based on their needs and qualifications.
Download Nagios XI and try it for free.

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

Yes! We distribute Nagios XI as a virtual machine to ensure you get it up and running quickly. Manual installation is possible to physical servers running RHEL or CentOS and is available to customers that require it.

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 it uses Nagios Core as a monitoring engine, you can use your custom Nagios plugins and event handlers, as well as community add-ons to extend XI’s native functionality. Discover thousands of plugins for Nagios XI at the Nagios Exchange!

Yes! Many of our plugins and add-ons can work with either Nagios XI or Nagios Core and are released under an OSS license.

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 – it’s an entire ecosystem of thousands of add-ons, 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.

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. Each license includes twelve months of maintenance (upgrade entitlements) and email support.

View a chart comparing Nagios Standard Edition to Nagios Enterprise Edition.

The initial purchase of any of our commercial solutions includes the first year of support and maintenance benefits. Support & Maintenance benefits enable customers to receive access to version upgrades for one year, plus, direct ticket support (up to ten incidents), and access to the customer-only support forum.

No! When purchasing a single license of Nagios XI, we provide you with three separate installs: one for production, one for back-up/failover, and one for testing/development.

Click here for additional information: Licensing Policy PDF

Each Nagios XI license includes one production, one backup/failover, and one testing/development install. This allows for an active-passive failover model, but if you would like to have an active-active setup then you would need one license for each system.

How you engineer the failover is up to you, but this article outlines popular options:

“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

“The ease of administration and great price drove us to Nagios. Paying a little for XI was well worth it; it has paid for itself time and time again in saved time and better service delivery.”

– Jason Moldan
System Administrator
University of St. Thomas


“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

Nagios is trusted by these companies and thousands more: