Nagios XI vs Robusta
Nagios XI
nagios.com
Robusta
home.robusta.devSide by side
| Figure | Nagios XI | Robusta |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 9 | 1 |
| Spec score · Cloud Monitoring | 9.0 (#4) | 6.9 (#21) |
| Access controls | Users can be limited to the Host and Service groups assigned to them. | The agent is read-only by default, with write access for auto-remediation available as an opt-in. |
| Deployment | Nagios XI is self-hosted on Linux and offers virtual machine images for VMware Workstation, Oracle VirtualBox, VMware ESXi and vSphere, and Microsoft Hyper-V. | Robusta is offered as SaaS, can be deployed in a customer's VPC, or can be fully self-hosted with the customer's own LLM key. |
| Support | A paid license includes the first year of Maintenance & Support, version upgrades, up to ten support cases, Support Portal access, Premium features, and an assigned Customer Success Manager. | Robusta offers to help install the product on a customer's cluster and walk through a live incident. |
Plans
Nagios XI
- Standard — 100 Nodes$2,595, paid once
- Enterprise — 100 Nodes$4,690, paid once
- FreeFree
- FreeFree
- Standard$2,595, paid once
- Standard (100-Node)$2,595, paid once
- Enterprise$4,690, paid once
- Enterprise (100-Node)$4,690, paid once
- SitewidePriced on request
In their own words
Nagios XI
Nagios XI monitors servers, network devices, applications and services from a Linux server you manage. It checks configured thresholds, records results and sends notifications. Standard includes more than 90 configuration wizards, auto-discovery, dashboards, performance graphs, an open REST API, automation, configuration rollback and snapshots. Enterprise adds SLA and capacity-planning reports, scheduled reports and pages, business process intelligence, bulk changes and an audit log. Users can be restricted to assigned host and service groups, with authentication options including Active Directory or LDAP over SSL, Microsoft Entra ID single sign-on and Duo two-factor authentication. It is self-hosted on Linux, with virtual machine images for several hypervisors and offline installation on Red Hat and CentOS Stream. A 30-day trial provides unlimited monitoring, Enterprise features and direct support without a credit card. The free plan is limited to 7 nodes or 100 services, whichever comes first. Paid perpetual licenses are priced by monitored nodes: Standard is $2,595.00 once and Enterprise is $4,690.00 once, each shown for 100 nodes.
Robusta
Robusta is an AI SRE offered through SaaS, a customer VPC deployment, or full self-hosting with the customer’s own LLM key. It learns an environment, groups duplicate alerts, filters noise, and surfaces new issues. When an alert arrives, its AI investigates root cause and blast radius, proposes a fix, and escalates to a human when needed. Alerts can enter through webhooks, HTTP requests, or MCP events, with listed tools including Prometheus AlertManager, Grafana, Datadog, PagerDuty, and Jira. Holmes provides native integrations for Kubernetes, OpenShift, AWS, Azure, GCP, Prometheus, Grafana, PostgreSQL, GitHub, and ServiceNow. Other sources can connect through MCP servers or HTTP APIs, including generated HTTP connectors. Customers may use their own models and API keys and disable Robusta-hosted models. The agent is read-only by default; write access for auto-remediation is optional. Queries, log lines, and conclusions are logged and replayable. Robusta says customer data is not used for model training and that it is SOC 2 compliant. Pricing is on request.