How is Nagios XI licensed?

The XI system is comprised of two categories of licensed code: 1) Open-Source foundation cores and components like Core, PNP, and NDOUtils, and 2) The XI UI and system frameworks. The 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 an XI license grants you a perpetual license to use the XI UI and system frameworks, including the licensed code.

What's the difference between XI Standard Edition and XI Enterprise Edition?

The Standard Edition of XI is equipped with time-saving features, including easy-to-use Configuration Wizards, advanced multi-tenancy capabilities, and a customizable GUI. A step up from the Standard Edition of XI, the Enterprise Edition has all standard features plus additional features, such as capacity planning, bulk modification, scheduled reports, and more.

What are the premium features in Nagios XI?

Premium features introduced in Nagios XI 2024R2 include Single Sign-On (SSO) and Premium Wizards for Prometheus, Zabbix Agent, vSphere, Oracle (Tablespace, Serverspace, Query), OpenAI Usage, MSSQL (Query, Server, Database), Kubernetes, Hyper-V, Docker, Cloud VM (DigitalOcean, Google Cloud, Linode, Microsoft-Azure Cloud, Rackspace Cloud), Amazon EC2, and Amazon S3.

Is there a free edition of Nagios XI?

Yes, XI is available free of charge for monitoring small environments. XI installations with a free license can monitor 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.

Are there any additional costs for a test or back-up installation of Nagios XI?

No, a single XI license includes three separate installs: One production install, one backup/failover install, 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.

What does my Nagios XI purchase include?

The initial purchase of any of our commercial solutions includes the first year of license benefits. These benefits allow customers to access version upgrades for one year, submit up to ten support cases, and access our support portal. Optional phone support contracts are available to customers who require additional support services.

Can I use custom and community add-ons with Nagios XI?

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

Can Nagios XI be deployed to physical servers?

Yes, we distribute 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.

Can my Nagios Core installation be migrated to Nagios XI?

If you would like to manually migrate your Nagios Core instance to XI, follow the guidelines in Migrating from Nagios Core to Nagios XI. If you are migrating from Nagios Core to Nagios XI 2024, see Migrating from Nagios Core to Nagios XI 2024.

Nagios XI: Industry-Leading Enterprise Infrastructure Monitoring Platform

Monitor and manage your entire IT infrastructure with Nagios XI®. Get real-time alerts for servers, networks, and IoT devices with perpetual pricing—no hidden costs.

No credit card required

Setup in 30 minutes

Hybrid deployment options

Trusted by Thousands of IT Teams Worldwide

Nagios XI monitors mission-critical infrastructure for organizations in 190+ countries, from small businesses to Fortune 500 enterprises. Our platform scales from dozens to 100,000+ monitored devices with flexible deployment options—on-premises, cloud, or hybrid. Backed by 20+ years of proven reliability and supported by an active community of 1M+ users.

NAGIOS XI FEATURES

Complete Infrastructure Monitoring & IT Management Platform

Nagios XI delivers comprehensive monitoring capabilities across networks, cloud infrastructure, databases, and applications. Automate issue detection and response, maintain security compliance, and gain the performance insights needed to keep your hybrid or on-premises environment running at peak efficiency.

NETWORK MONITORING

Complete IT Infrastructure Visibility

Full-stack visibility – Monitor all critical components from one dashboard, eliminating tool sprawl and reducing MTTR
Cloud & virtualization – Native AWS, Azure, VMware, and Hyper-V support for seamless hybrid cloud monitoring
Database performance – Track MySQL, PostgreSQL, MongoDB, MS SQL Server, and Oracle with query-level insights
Network infrastructure – Monitor routers, switches, firewalls, servers, and IoT devices in real-time
Website & SSL monitoring – Validate certificates, track transactions, and catch issues before users do
Protocol-level visibility – Deep inspection of TCP/UDP, SMTP, HTTP(S), FTP, SSH, DNS, DHCP, and SNMP traffic

AUTOMATION & NOTIFICATIONS

Proactive Problem Resolution

Event-driven automation – Execute remediation scripts automatically when issues arise, reducing mean time to resolution
Multi-channel alerting – Route notifications through email, SMS, Slack, Teams, Discord, or custom integrations with user-specific preferences
Proactive capacity planning – Auto-generated performance graphs help you scale before bottlenecks impact users
Dependency mapping – Visualize infrastructure relationships to quickly identify root causes and cascading failures
SLA validation – Track service performance against agreements with automated reporting and compliance dashboards

SECURITY & COMPLIANCE

Enterprise-Grade Protection

On-premises deployment – Keep sensitive data within your infrastructure with full control over installation, storage, and network access
Role-based access control – Secure multi-tenant environment with granular permissions for teams, departments, and external stakeholders
Audit logging – Track all user actions, configuration changes, and system events with comprehensive logs for compliance requirements
Encrypted communications – Secure data transmission with SSL/TLS encryption for web interface and API connections
Authentication options – Integrate with LDAP, Active Directory, SSO, or use two-factor authentication for enhanced security

See Nagios XI In Action

Schedule a personalized demo and discover how Nagios XI can transform your infrastructure monitoring.

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Hybrid deployment options

SOLUTIONS

See Everything, Miss Nothing

Monitor all critical infrastructure components to prevent downtime and ensure optimal performance across your entire IT environment.

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CASE STUDIES

Customer Success Stories

See how organizations worldwide use Nagios XI to monitor critical infrastructure, reduce downtime, and gain complete visibility across their IT environments.

CASE STUDY

Amman Stock Exchange

Financial Services

THE CHALLENGE

Complex trading infrastructure across three data centers required robust monitoring with zero latency tolerance and SMS alerting independent of internet connectivity.

300

Nodes Monitored

4000+

Services Tracked

KEY OUTCOMES

Scaled from 200 to 300 nodes as infrastructure grew

Zero-latency monitoring for critical trading systems

Custom SMS alerting without internet dependency

Complete visibility across all critical systems

“If we can monitor it, we can control it. We are alerted to things we can fix before they become big problems.”

– Fadi Sodah, Director of ICT

Top Bank Saves Valuable Time for IT Team with Nagios XI

With Nagios XI, the bank’s IT staff found they could seamlessly take control of their entire environment...

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Switching to Nagios XI Boosts Customizing and Collaboration Capabilities

Today, the company monitors its IT infrastructure and accomplishes more with Nagios XI than it ever did...

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EverWatch Global and E-Commerce Retailer Implement Nagios, Leads to 98% Annual Uptime

EverWatch Global provides outsourced IT management and consulting to non-profits and small and medium...

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TESTIMONIALS

What Our Customers Say

We’ve worked with thousands of businesses of all sizes across the globe. Read what they have to say about our solutions.

“The biggest advantage of Nagios for us is its customizations. Nagios has simplified a very large job, allowed us to make the necessary customizations needed and provided us with a community that is a valuable resource when a new requirement comes up.”

Derek Brewer
Technical Program Manager

“With Nagios, we are better prepared to provide statistics and trending, which gives us a base for data-driven decision-making. This data has impacted the way we buy servers, provision and restrict bandwidth, and react to anomalies, events, and problems.”

Jason Moldan
System Admin

“Before monitoring, we couldn’t even spend the bulk of our time fighting fires; we were spending time finding them. Now, our system is nearly self-healing. Nagios is super easy to install and configure, runs on standard bash scripts, and allows us to automate anything.”

Alexander Smith
Operations Manager

“We are a telecommunications company and the leader in our region. Our monitoring goals were fulfilled with Nagios. We had all of our devices monitored 24/7 and were able to take advantage of all the reports and tools that Nagios has to offer.”

Alberto Herbas
IT Manager, Comteco

“We specialize in network access control, and we needed a system that was able to monitor our mission-critical servers and routers as there was nothing in place prior. Nagios has been great for us. I’m able to take care of issues before they become fires or jump on them when they happen, at the very least.”

Dan Shields
IT Department

“With Nagios, we were able to consolidate multiple commercial monitoring solutions into one and, at the same time, reduce our maintenance costs.”

Michael Niedermann
Manager, IT Operations

“We have been able to work with Nagios to determine our best possible interfaces and workflows to make our monitoring system work with us instead of against us. The flexibility and expandability of Nagios are second to none.”

Adam Kennedy
Network and Systems Engineering

“The efficiency and proactivity levels of our resources were raised. Nagios’ centralized monitoring provided an excellent panoramic view, and our troubleshooting time decreased. The valuable and precise information was presented in well-organized reports.”

Marco Aponte
CEO

“As a consultancy and service provider, it’s up to us to imagine what our customers can monitor. Nagios XI gives us inspiration for what’s possible. We really appreciate the graphs, pre-sets, and configuration inserts. Our customers love the reporting because we can customize the reports for what they need.

Kenneth Hagstrom
Co-founder

“By moving to Nagios XI, we got everything we wanted on a graphic interface. We don’t have to edit or change anything in the command lines. We don’t have to define groups manually. We don’t have to customize the plugins manually. We can perform insightful dashboarding and alerting. It’s much, much better.”

Fadi Sodah
Director of ICT

NAGIOS XI PERPETUAL PRICING

Buy Once, Own Forever

One-time investment. No subscription fees. No per-user charges. Perpetual licensing that scales with your infrastructure.

Free

Manage and monitor small-scale environments.

Find the right plan for you with our XI Plan Calculator

Includes 7 Nodes or 100 Services – whichever is reached first
Includes most features of the Standard license
Support is not included

License Levels

Price

7 Node || 100 Service

Free

Standard

Manage and monitor small to medium environments.

Find the right plan for you with our XI Plan Calculator

Infrastructure monitoring and graphing
Open API to connect to existing technology stack
Enhanced alerting and reporting
Built-in automation capabilities
Configuration GUI
65+ configuration wizards

License Levels

Price

100-Node

$2,495

200-Node

$4,195

300-Node

$5,995

400-Node

$6,995

500-Node

$7,995

750-Node

$11,495

1000-Node

$14,495

2000-Node+

Enterprise

Premium monitoring for small to medium environments.

Find the right plan for you with our XI Plan Calculator

Available as an add-on to any Nagios XI license level
Service-Level Agreement (SLA) reports
Includes all features of the Standard License
Business Process Intelligence (BPI)
Capacity planning reports
Ability to schedule reports
Bulk modification tools
Audit logs

License Levels

Price

100-Node

$4,490

200-Node

$6,190

300-Node

$7,990

400-Node

$8,990

500-Node

$9,990

750-Node

$13,490

1000-Node

$16,490

2000-Node+

Sitewide

Superior monitoring for large or distributed environments.

Find the right plan for you with our XI Plan Calculator

Enterprise features included for free with all Sitewide packages
Connect site to site for easier large-environment monitoring
Includes multiple instances of our Unlimited Node Nagios XI
Ideal for large-scale deployments of Nagios XI
Substantial discount + Free Nagios Fusion license
Allows for distributed setup of Nagios XI

License Levels

Price

Multiple Unlimited Nodes

Node-Based Licensing Explained

*Nagios XI's plans are primarily based on the Node-count of the license. A Node is anything with an IP address or Fully Qualified Domain Name (FQDN) that you would like to monitor (switches, routers, firewalls, workstations, and other network devices). There are no restrictions on the number of Services you can monitor. While paid licenses of Nagios XI do not contain any software-imposed limitations, we have found that systems performing more than 15,000-20,000 checks in a 5-minute interval should consider following our Server Considerations Guide to ensure the best performance on your installation. Nagios XI also offers an Enterprise add-on which enhances the software's capabilities. This addition allows users to schedule reports, project future values with capacity planning, and much more. Refer to our Enterprise documentation or contact a Nagios sales representative to learn more about the capabilities of the Enterprise-level license.With the purchase of a Nagios XI license, you receive access to Premium Features as part of your Maintenance & Support benefits for the first year. After the first year, renewal of your Maintenance & Support plan is required to maintain this feature set. This includes features such as Single-Sign On (SSO) via MS Azure AD, the Nagios Mod-Gearman user interface, and a collection of premium wizards!To learn more and see the full list of features, you can visit our article on Premium Features or email [email protected].

System Requirements

See our Nagios XI – Hardware Requirements document for more information.

Hardware Specifications

Minimum and recommended system requirements for optimal performance

Hardware

Hard Drive

Memory

Processor

Architecture

Minimum

8 GB

1 GB

1 GHz

64-bit

Recommended

40 GB

4 GB

2+ GHz (two or more cores recommended)

64-bit

Note: These requirements may vary based on your specific monitoring environment, number of monitored hosts, and check frequency. For enterprise deployments, consider exceeding the recommended specifications.

Frequently Asked Questions

Resources

Nagios Core vs Nagios XI

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Nagios XI: Industry-Leading Enterprise Infrastructure Monitoring Platform

Trusted by Thousands of IT Teams Worldwide