# Icinga vs Nagios

| Attribute | Icinga | Nagios |
|---|---|---|
| **vioscaleAI score** | 41 (27% (low)) | 59.8 (21% (low)) |
| activity.commits_last_30d | 32 | - |
| adoption.dependent_repos | 0 | - |
| adoption.github_stars | 2,239 | - |
| content.faq | `[{"answer":"Icinga is a free, open-source monitoring solution that provides visibility into infrastructure performance and metrics. It offers a powerful configuration engine with REST API capabilities, a web-based interface, and integrated incident management and notification features. It is indexed under Network Monitoring.","source":"https://icinga.com","question":"What is Icinga?","confidence":0.6},{"answer":"Icinga is open source, so it can be self-hosted and used at no licence cost. It is released under the GPL-3.0 licence. Pricing changes often, so verify at source before relying on it.","source":"https://icinga.com","question":"Is Icinga free to use?","confidence":0.6},{"answer":"Icinga supports the web and Linux. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://icinga.com","question":"What platforms does Icinga support?","confidence":0.6},{"answer":"Yes. Icinga can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://icinga.com","question":"Can Icinga be self-hosted?","confidence":0.6},{"answer":"We have confirmed 3 integrations for Icinga, including Prometheus, VictoriaMetrics and OpenTelemetry. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://icinga.com","question":"What does Icinga integrate with?","confidence":0.6},{"answer":"Yes. Icinga is published under the GPL-3.0 licence, a copyleft licence, so check its terms before embedding it in a closed-source product. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/Icinga/icinga2","question":"Is Icinga open source?","confidence":0.95},{"answer":"Icinga is available worldwide. Its primary markets are Germany and the United Kingdom. The vendor is headquartered in Germany.","source":"https://icinga.com","question":"Where is Icinga available?","confidence":0.75}]` | `[{"answer":"A free, open-source monitoring system that tracks the health and performance of IT infrastructure including servers, networks, and applications, providing real-time visibility and alerting to prevent downtime. It is indexed under Observability Tools.","source":"https://www.nagios.org","question":"What is Nagios?","confidence":0.6},{"answer":"Nagios is open source, so it can be self-hosted and used at no licence cost. Pricing changes often, so verify at source before relying on it.","source":"https://www.nagios.org","question":"Is Nagios free to use?","confidence":0.6},{"answer":"Nagios supports the web, Windows, macOS and Linux. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://www.nagios.org","question":"What platforms does Nagios support?","confidence":0.6},{"answer":"Yes. Nagios can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://www.nagios.org","question":"Can Nagios be self-hosted?","confidence":0.6},{"answer":"We have confirmed 26 integrations for Nagios, including Grafana, InfluxDB, Prometheus, Apache, Nginx, IIS, Tomcat and MySQL, plus 18 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://www.nagios.org","question":"What does Nagios integrate with?","confidence":0.6}]` |
| deployment.options | `{"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | Icinga is a free, open-source monitoring solution that provides visibility into infrastructure performance and metrics. It offers a powerful configuration engine with REST API capabilities, a web-based interface, and integrated incident management and notification features. | An open-source platform for monitoring servers, networks, applications, and cloud infrastructure using active polling, with log analysis and visualization capabilities. |
| features.capabilities | `{"open_source":true}` | `{"apm":true,"logs":true,"hosting":"both","metrics":true,"on_call":true,"alerting":true,"dashboards":true,"open_source":true,"snmp_polling":true,"netflow_sflow_ipfix":true,"cloud_vpc_monitoring":true,"auto_discovery_topology":true,"config_backup_change_mgmt":true,"synthetic_active_monitoring":true}` |
| integrations.count | 3 | 4,000 |
| integrations.list | `[{"name":"Prometheus","native":true},{"name":"VictoriaMetrics","native":true},{"name":"OpenTelemetry","native":true}]` | `[{"name":"Grafana"},{"name":"InfluxDB"},{"name":"Prometheus"},{"name":"Apache"},{"name":"Nginx"},{"name":"IIS"},{"name":"Tomcat"},{"name":"MySQL"},{"name":"PostgreSQL"},{"name":"Oracle"},{"name":"SQL Server"},{"name":"MongoDB"},{"name":"LDAP"},{"name":"Active Directory"},{"name":"JBoss"},{"name":"WebLogic"},{"name":"Citrix"},{"name":"PagerDuty"},{"name":"Slack"},{"name":"ServiceNow"},{"name":"DB2"},{"name":"EC2"},{"name":"VMware"},{"name":"Hyper-V"},{"name":"MSSQL"},{"name":"IPMI"}]` |
| language.primary | C++ | - |
| license.spdx | GPL-3.0 | - |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"web":true}` | `{"cli":true,"mac":true,"web":true,"linux":true,"windows":true}` |
| pricing | `{"type":"open_source","freeTier":true,"sourceUrl":"https://icinga.com","retrievedAt":"2026-08-19T14:41:18.900Z"}` | `{"type":"hybrid","freeTier":true,"sourceUrl":"https://www.nagios.org","retrievedAt":"2026-10-06T11:28:57.917Z","freeTrialDays":30}` |
| pricing.free_tier | yes | yes |
| pricing.model | commercial | freemium |
| pricing.price_level | free | low |
| release.history | `[{"url":"https://github.com/Icinga/icinga2/releases/tag/v2.16.5","date":"2026-08-18T08:17:55Z","type":"stable","version":"v2.16.5"},{"url":"https://github.com/Icinga/icinga2/releases/tag/v2.15.6","date":"2026-08-18T08:17:30Z","type":"stable","version":"v2.15.6"},{"url":"https://github.com/Icinga/icinga2/releases/tag/v2.16.4","date":"2026-07-16T06:38:41Z","type":"stable","version":"v2.16.4"},{"url":"https://github.com/Icinga/icinga2/releases/tag/v2.16.3","date":"2026-07-01T08:53:37Z","type":"stable","version":"v2.16.3"},{"url":"https://github.com/Icinga/icinga2/releases/tag/v2.15.5","date":"2026-07-01T08:54:00Z","type":"stable","version":"v2.15.5"},{"url":"https://github.com/Icinga/icinga2/releases/tag/v2.14.10","date":"2026-07-01T08:53:49Z","type":"stable","version":"v2.14.10"},{"url":"https://github.com/Icinga/icinga2/releases/tag/v2.16.2","date":"2026-06-29T12:36:09Z","type":"stable","version":"v2.16.2"},{"url":"https://github.com/Icinga/icinga2/releases/tag/v2.15.4","date":"2026-06-29T12:36:29Z","type":"stable","version":"v2.15.4"},{"url":"https://github.com/Icinga/icinga2/releases/tag/v2.14.9","date":"2026-06-29T12:36:49Z","type":"stable","version":"v2.14.9"},{"url":"https://github.com/Icinga/icinga2/releases/tag/v2.16.1","date":"2026-05-21T11:24:25Z","type":"stable","version":"v2.16.1"},{"url":"https://github.com/Icinga/icinga2/releases/tag/v2.16.0","date":"2026-04-23T08:37:37Z","type":"stable","version":"v2.16.0"},{"url":"https://github.com/Icinga/icinga2/releases/tag/v2.15.3","date":"2026-04-23T08:37:21Z","type":"stable","version":"v2.15.3"},{"url":"https://github.com/Icinga/icinga2/releases/tag/v2.15.2","date":"2026-01-29T13:30:50Z","type":"stable","version":"v2.15.2"},{"url":"https://github.com/Icinga/icinga2/releases/tag/v2.14.8","date":"2026-01-29T13:31:08Z","type":"stable","version":"v2.14.8"},{"url":"https://github.com/Icinga/icinga2/releases/tag/v2.13.14","date":"2026-01-29T13:31:23Z","type":"stable","version":"v2.13.14"},{"url":"https://github.com/Icinga/icinga2/releases/tag/v2.15.1","date":"2025-10-16T12:32:00Z","type":"stable","version":"v2.15.1"},{"url":"https://github.com/Icinga/icinga2/releases/tag/v2.14.7","date":"2025-10-16T12:31:17Z","type":"stable","version":"v2.14.7"},{"url":"https://github.com/Icinga/icinga2/releases/tag/v2.13.13","date":"2025-10-16T12:29:40Z","type":"stable","version":"v2.13.13"},{"url":"https://github.com/Icinga/icinga2/releases/tag/v2.15.0","date":"2025-06-18T14:41:14Z","type":"stable","version":"v2.15.0"},{"url":"https://github.com/Icinga/icinga2/releases/tag/v2.13.12","date":"2025-05-27T12:01:06Z","type":"stable","version":"v2.13.12"}]` | - |
| reliability.status_page | yes | - |
| security.disclosure_policy | yes | - |
| security.scorecard | 5.4 | - |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Ficinga%2Ficinga2&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (Network Monitoring)

| Capability | Icinga | Nagios |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Snmp polling | - | ✓ |
| Netflow sflow ipfix | - | ✓ |
| Auto discovery topology | - | ✓ |
| Wifi monitoring | - | - |
| Sdwan monitoring | - | - |
| Synthetic active monitoring | - | ✓ |
| Config backup change mgmt | - | ✓ |
| Cloud VPC monitoring | - | ✓ |
| Multi tenant msp | - | - |
| Anomaly detection | - | - |
| Open source | ✓ | ✓ |

*Source: vioscaleAI. Generated 2026-10-17T01:31:29.358Z. "-" = undocumented, not absent.*