# Checkmk vs Nagios

| Attribute | Checkmk | Nagios |
|---|---|---|
| **vioscaleAI score** | 58.3 (50% (medium)) | 59.8 (21% (low)) |
| content.faq | `[{"answer":"A comprehensive observability solution that monitors infrastructure, applications, and synthetic endpoints across hybrid and cloud environments, with over 2000 pre-built integrations and automated discovery. It is indexed under Network Monitoring.","source":"https://checkmk.com/pricing","question":"What is Checkmk?","confidence":0.6},{"answer":"Checkmk offers a free tier, so you can start without paying. Paid plans are also available: Community, Professional, Ultimate and Cloud. Pricing changes often, so verify at source before relying on it.","source":"https://checkmk.com","question":"Is Checkmk free?","confidence":0.6},{"answer":"Checkmk supports the web and Linux. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://checkmk.com","question":"What platforms does Checkmk support?","confidence":0.6},{"answer":"Yes. Checkmk can be deployed cloud / SaaS, on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://checkmk.com","question":"Can Checkmk be self-hosted?","confidence":0.6},{"answer":"We have confirmed 19 integrations for Checkmk, including Slack, Mattermost, ServiceNow, Jira, Kubernetes, OpenShift, Prometheus and Redis, plus 11 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://checkmk.com/pricing","question":"What does Checkmk integrate with?","confidence":0.6},{"answer":"We have independently confirmed GDPR for Checkmk. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Checkmk not holding them. Always confirm compliance directly before you rely on it.","source":"https://checkmk.com/blog/security-best-practices-checkmk","question":"What security certifications does Checkmk have?","confidence":0.7},{"answer":"Checkmk is available worldwide. Its primary markets are Germany and the United States. The vendor is headquartered in Germany.","source":"https://checkmk.com/pricing","question":"Where is Checkmk 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 | `{"cloud":true,"on_prem":true,"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | A comprehensive observability solution that monitors infrastructure, applications, and synthetic endpoints across hybrid and cloud environments, with over 2000 pre-built integrations and automated discovery. | 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,"snmp_polling":true,"multi_tenant_msp":true,"auto_discovery_topology":true,"synthetic_active_monitoring":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 | 2,000 | 4,000 |
| integrations.list | `[{"name":"Slack"},{"name":"Mattermost"},{"name":"ServiceNow"},{"name":"Jira"},{"name":"Kubernetes"},{"name":"OpenShift"},{"name":"Prometheus"},{"name":"Redis"},{"name":"Couchbase"},{"name":"RabbitMQ"},{"name":"FortiGate"},{"name":"Pulse Secure"},{"name":"Cisco ASA"},{"name":"Cisco Webex"},{"name":"AWS"},{"name":"Azure"},{"name":"Google Cloud"},{"name":"Salesforce"},{"name":"VMware"},{"name":"GCP","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"}]` |
| market.availability | `{"hqCountry":"DE","primaryMarkets":["DE","US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"web":true,"linux":true,"windows":true}` | `{"cli":true,"mac":true,"web":true,"linux":true,"windows":true}` |
| pricing | `{"type":"hybrid","plans":[{"free":true,"name":"Community","description":"Free and open-source edition with core monitoring","contactSales":false,"includedLimits":{"sites":"1","services":"750"}},{"free":false,"name":"Pro","description":"Self-managed with distributed monitoring and automation, scales to 100,000+ hosts","contactSales":false},{"free":false,"name":"Ultimate","description":"Self-managed with cloud-native capabilities including Kubernetes, AWS, Azure, and GCP support","contactSales":false},{"free":false,"name":"Cloud","description":"Fully managed SaaS with automatic updates and backups, capped at 50,000 services","contactSales":false},{"free":false,"name":"Ultimate with Multi-Tenancy","description":"For managed service providers with multi-tenant isolation and centralized monitoring","contactSales":true}],"summary":"Free Community edition; Pro and Ultimate are self-managed subscriptions; Cloud is a managed SaaS option. All pricing based on services/metrics/tests monitored rather than host count.","freeTier":true,"sourceUrl":"https://checkmk.com/pricing","retrievedAt":"2026-09-28T13:17:51.606Z","freeTrialDays":30,"billingPeriods":["year"]}` | `{"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 | freemium | freemium |
| pricing.price_level | low | low |
| pricing.starting_price | `{"amount":190,"currency":"EUR"}` | - |
| pricing.transparent | yes | - |
| reliability.sla_pct | 99.5 | - |
| security.gdpr | yes | - |

## Capabilities (Network Monitoring)

| Capability | Checkmk | 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 2026-10-16T19:18:20.537Z. "-" = undocumented, not absent.*