Side by side
Nagios XI vs siomon
Both stand on hardware monitoring software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APILinuxMac+3
Nagios XI offers self-hosted monitoring, a limited free edition, and perpetual paid licenses priced by node count. Its 30-day trial includes Enterprise features and direct technical support; compare the edition features and deployment requirements before selecting a license.
Visit Nagios XI Free plan Linux
siomon combines live sensor monitoring with broad one-shot hardware reporting and multiple export formats. Its dependency-free core is straightforward, while deeper hardware data depends on root access, drivers, or optional modules.
Visit siomonThe facts
| Nagios XI | siomon | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | No | Not published |
| Runs on | API, Linux, Mac, Self-hosted, Web, Windows | Linux |
| Lowest paid plan | Standard: $2,595, paid once | Not published |
| Plans published | 6 | None |
| Maker | Not published | Not published |
| Website | nagios.com | github.com |
| On hardware monitoring software | #22 of 59 | #53 of 59 |
Nagios XI: what it does well
- Checks servers, network devices, applications, and services.
- Standard includes auto-discovery and dashboards.
- Enterprise includes SLA reports and capacity planning.
- Trial includes unlimited monitoring and technical support.
- Paid licenses allow unlimited services per licensed node.
What to know first
- Requires self-hosted Linux deployment.
- Free edition is limited to 7 Nodes or 100 Services, whichever comes first.
- 100-node Standard license costs 2595.00 USD once.
- Paid licenses include first-year support only.
siomon: what it does well
- Tracks minimum, maximum, and average readings
- Configurable alerts and CSV logging
- Reports export to four formats
- Broad CPU and hardware coverage
- No mandatory runtime dependencies
What to know first
- Linux only
- NVIDIA details require the NVIDIA driver
- Some readings need optional components
- Extra data requires root access
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