Nagios XI
Application performance monitoring (APM) tools
Enterprise monitoring software
Network monitoring software
Server monitoring software
Monitoring software
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
Take the quiz to check if Nagios XI and its alternatives fit your requirements.
$2,595 one-time perpetual license
Free TrialFree version
Small
Medium
Large
- Agriculture, fishing, and forestry
- Construction
- Energy and utilities
What is Nagios XI
Nagios XI is an IT infrastructure monitoring platform used to monitor hosts, services, networks, and applications through checks, alerts, and dashboards. It is typically used by IT operations and network/server administrators to track availability and performance across on-premises and hybrid environments. The product builds on the Nagios plugin ecosystem and provides a web UI, reporting, and configuration workflows on top of the underlying monitoring engine. It is commonly deployed for centralized alerting and uptime monitoring rather than deep code-level application tracing.
Broad plugin-based coverage
Nagios XI supports a large ecosystem of plugins and integrations, which helps teams monitor diverse infrastructure components and common services. This approach enables custom checks for internal systems where packaged integrations may not exist. It also allows organizations to standardize alerting across heterogeneous environments using a consistent check/notification model.
Mature alerting and escalation
The platform provides configurable notifications, escalations, and scheduling to route alerts to the right teams. It supports common operational patterns such as maintenance windows, acknowledgements, and event history for incident follow-up. These capabilities fit well for NOC-style monitoring and availability-focused operations.
On-premises control and reporting
Nagios XI is typically deployed and operated by the customer, which can suit environments with strict data residency or network isolation requirements. It includes built-in dashboards and reporting for availability, SLA-style summaries, and historical trends. This can reduce reliance on external SaaS services for core infrastructure monitoring needs.
Limited modern APM depth
Nagios XI focuses on host/service checks and availability monitoring rather than deep application observability. It does not natively provide the same level of distributed tracing, code-level diagnostics, or real-user session analysis found in more developer-centric observability tools. Teams often need additional products or custom instrumentation to cover those use cases.
Configuration can be labor-intensive
Scaling monitoring coverage often requires significant configuration work, including defining hosts/services, tuning thresholds, and managing plugins. While templates and wizards help, complex environments can still involve manual effort and ongoing maintenance. This can increase operational overhead compared with platforms that emphasize auto-discovery and automatic instrumentation.
Scaling and data model constraints
Large environments may require careful architecture decisions (polling distribution, performance tuning, and database management) to maintain responsiveness. Historical data retention and high-cardinality metrics use cases are not the primary design center, which can limit advanced analytics. Organizations with very large telemetry volumes may need complementary systems for long-term metrics/logs analysis.
Plan & Pricing
| Plan | Price | Key features & notes |
|---|---|---|
| Free (XI Free) | Free — 7 Nodes or 100 Services (whichever is reached first) | Includes most Standard features; intended for small/home use or learning; support not included. |
| Standard (perpetual, node-based) | 100-Node: $2,595 (one-time) | |
| --- | --- | |
| 200-Node: $4,395 (one-time) | ||
| 300-Node: $6,195 (one-time) | ||
| 400-Node: $7,295 (one-time) | ||
| 500-Node: $8,295 (one-time) | ||
| 750-Node: $11,495 (one-time) | ||
| 1000-Node: $14,995 (one-time) | ||
| 2000-Node+: Contact Sales | Infrastructure monitoring & graphing, API, enhanced alerting & reporting, GUI configuration, built-in automation, 70+ configuration wizards. Perpetual licensing (buy once, own forever); first-year Maintenance & Support is included. | |
| Enterprise (add-on to any XI license, node-based) | 100-Node: $4,690 (one-time) | |
| 200-Node: $6,490 (one-time) | ||
| 300-Node: $8,290 (one-time) | ||
| 400-Node: $9,390 (one-time) | ||
| 500-Node: $10,390 (one-time) | ||
| 750-Node: $13,590 (one-time) | ||
| 1000-Node: $17,090 (one-time) | ||
| 2000-Node+: Contact Sales | Adds SLA reports, Business Process Intelligence (BPI), capacity planning, scheduled reports, bulk modification tools, audit logs. Sold as an add-on; renewal of Enterprise features and Maintenance & Support required after first year. | |
| Plan | Price | Key features & notes |
| --- | --- | --- |
| Sitewide | Multiple Unlimited Nodes — Contact Sales | For large/distributed environments; Enterprise features included with Sitewide packages; includes multiple Unlimited-Node XI instances and often bundled Nagios Fusion. |
Notes: Nagios XI uses perpetual (one-time) licensing for listed prices; Maintenance & Support renewals are required after year one to continue receiving updates/support (renewal pricing published separately).
Seller details
Nagios Enterprises, LLC
Saint Paul, Minnesota, USA
2007
Private
https://www.nagios.com/
https://x.com/nagiosinc
https://www.linkedin.com/company/nagios/
