Side by side

Argus Monitor vs Nagios XI

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.

Argus Monitor

Free plan Windows

Argus Monitor combines detailed fan controls with hardware and storage monitoring for Windows. A 30-day evaluation is listed, followed by licenses from $16.45 a year.

Visit Argus Monitor

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

The facts

	Argus Monitor	Nagios XI
Free plan	Yes	Yes
Open source	Not published	No
Runs on	Windows	API, Linux, Mac, Self-hosted, Web, Windows
Lowest paid plan	1-year renewal: $11.95 a year	Standard: $2,595, paid once
Plans published	5	6
Maker	Argus Monitor	Not published
Website	argusmonitor.com	nagios.com
On hardware monitoring software	#16 of 59	#22 of 59

Argus Monitor: what it does well

Fan control supports curves, profiles, and rate limits.
Monitors nearly all available HDDs and SSDs through S.M.A.R.T.
A fully functional 30-day evaluation is available.
Each listed license supports two concurrent installations.
No subscription is required.

What to know first

Supports Windows 11 and Windows 10 version 22H2 or later.
RGB controls are limited to supported hardware.
Each additional active installation adds a fee.

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.

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