Alternatives to Icinga
Modern Nagios-compatible monitoring
Icinga ranks #6 of 9 in Infrastructure monitoring, with an Alt Score of 86. It is licensed under GPL-3.0, open source with paid hosting from €2,000/year (Module Subscription) and available on Linux, Windows and Web. 10 of 10 checklist rows are verified against a public source.
IT teams and system administrators responsible for hybrid infrastructure (servers, networks, cloud, Kubernetes, applications) who need vendor-neutral, self-hosted monitoring at enterprise scale.
A core monitoring engine (a Nagios-derived fork) that runs checks against hosts and services and evaluates their state. It supports distributed, highly available, and multitenant setups for large environments, with Icinga Web providing dashboards for visibility, plus notification/alerting and metrics and logs integration for trend analysis.
You install the Icinga 2 core and define hosts, services, and checks (via config files, API, or director tooling); the engine runs those checks on a schedule, triggers notifications on state changes, and Icinga Web displays results and dashboards for ongoing monitoring.
Why people leave Icinga
Dashed reasons are sourced facts; the rest are opinions. Vendors can dispute.
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Ranked alternatives
Ordered by Alt Score. Click any score to see the breakdown.
Feature comparison
Rows come from the Infrastructure monitoring checklist (14 rows). Human-verified cells only. ? means the value has not been verified.
| Infrastructure monitoring checklist | Icinga | checkmk | Netdata | New Relic | Datadog | Grafana |
|---|---|---|---|---|---|---|
| Pricing model | ||||||
| Starts at | ||||||
| License | ||||||
| Platforms | ||||||
| Metrics collection | ||||||
| Dashboards | ||||||
| Alerting rules | ||||||
| Log aggregation | ||||||
| Tracing / APM | ||||||
| Self-hostable | ||||||
| Agent footprint | ||||||
| Integrations count | ||||||
| Free tier limits | ||||||
| High-availability setup |
Every fact and feature listed for Icinga is verified against its own pages. Each alternative is sourced on its own page.
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License GPL-3.0 verified 2026-07-10
Icinga 2 and the Icinga 2 documentation are licensed under the terms of the GNU General Public License Version 3 or later.
https://icinga.com/docs/icinga-2/latest/doc/01-about/ -
Pricing model OSS + paid hosting verified 2026-07-10
Free and Open Source Enterprise Class Monitoring
https://icinga.com/subscription/ -
Platforms Linux, Windows, Web verified 2026-07-10
can be built on Linux/Unix and Windows
https://icinga.com/docs/icinga-2/latest/doc/01-about/ -
Starts at €2,000/year (Module Subscription) verified 2026-07-10
2.000 €/year
https://icinga.com/subscription/ -
Status active verified 2026-07-10
fixes a regression with the Json.decode() DSL function that was introduced in v2.16.2
https://github.com/Icinga/icinga2/releases -
Metrics collection Yes verified 2026-07-10
Icinga 2 writes parsed metrics directly to Graphite's Carbon Cache TCP port, defaulting to `2003`.
https://icinga.com/docs/icinga-2/latest/doc/14-features/ -
Dashboards Yes verified 2026-07-10
dashboards in Icinga Web 2 currently can't be shared across users
https://icinga.com/blog/how-to-share-icinga-dashboards/ -
Alerting rules Yes verified 2026-07-10
Notification objects are used to specify how users should be notified in case of host and service state changes and other events.
https://icinga.com/docs/icinga-2/latest/doc/09-object-types/ -
Log aggregation Partial verified 2026-07-10
Monitor log files or query log management tools such as Elasticsearch and Graylog.
https://icinga.com/products/metrics-and-logs/ -
Tracing / APM No verified 2026-07-10
Synthetic web application requests
https://icinga.com/solutions/application-monitoring/ -
Self-hostable Yes verified 2026-07-10
Free and Open Source Enterprise Class Monitoring
https://icinga.com/subscription/ -
Agent footprint Yes verified 2026-07-10
designed to run as light-weight agent on Windows
https://icinga.com/docs/icinga-2/latest/doc/06-distributed-monitoring/ -
Integrations count Yes verified 2026-07-10
There are thousands of community plugins available next to the standard plugins provided by the Monitoring Plugins project.
https://icinga.com/docs/icinga-2/latest/doc/05-service-monitoring/ -
Free tier limits Yes verified 2026-07-10
No subscription needed
https://icinga.com/subscription/ -
High-availability setup Yes verified 2026-07-10
All endpoints in the same zone work as high-availability setup.
https://icinga.com/docs/icinga-2/latest/doc/06-distributed-monitoring/
FAQ
Yes. checkmk, Grafana and Zabbix have a free tier or are fully free. Free-tier limits in the comparison table are verified and dated.
checkmk, Netdata and Grafana — every license claim links its source.