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Heimdall

Free#20 of 59 in Hardware Monitoring SoftwareRemote Connection Manager Software

Heimdall: A focused open-source choice for live fleet metrics across Windows, macOS, and Linux. Ranked #20 of 59 in Hardware Monitoring Software by our editors (6.8/10); pricing: Free plan; best for open-source cross-platform fleet dashboards.

6.8/10Editor score

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Heimdall6.8 Visit Heimdall

At a glance

Editor score
6.8 / 10
Pricing
Free plan
Best for
Open-source cross-platform fleet dashboards
Free plan
Yes
Paid from
Free
Remote monitoring
Yes
Facts checked
19 Sep 2026

Where it wins
- Real-time CPU, GPU, storage, network, temperature, and power metrics
- Prometheus/OpenMetrics export with short-range history
- TLS enrollment, daemon reconnection, alerts, logs, and JSON CLI access
Where it doesn't
- Alert delivery is limited to webhooks
- The dashboard is presented through a terminal interface
- No AI features are included

Our verdict on Heimdall

Heimdall is an open-source hardware monitoring system for homelabs, GPU machines, servers, and personal computers. Daemons run on monitored hosts, collect hardware and system metrics, and stream them over gRPC to a central hub. The terminal dashboard provides a live fleet view across Windows, macOS, and Linux, with metrics covering CPU, memory, disk, disk I/O, network, temperature, GPU, power, latency, uptime, and host context. API and self-hosted deployments are also supported, making Heimdall a fit for technically comfortable teams managing their own monitoring environment.

Its standout strength is the combination of fleet visibility and operational access. Heimdall supports TLS enrollment, automatic daemon reconnection, and mDNS hub discovery for host coordination. Prometheus/OpenMetrics export connects the monitoring data to Prometheus and Grafana, while Tailscale is listed among its integrations. In-dashboard host logs, a live process view, read-only allow-listed diagnostic commands, and a JSON CLI extend the product beyond passive charts. The CLI is designed for scripts, CI/CD, and agents, giving engineering teams several ways to consume the system.

Heimdall is distributed as open-source software under AGPL-3.0-or-later, with a free plan and no paid tiers described. Threshold alerting uses hysteresis and webhook delivery, so teams needing other alert channels should consider an alternative. Heimdall is the stronger pick for self-hosted operators who want terminal-first fleet monitoring, Prometheus-compatible export, and detailed hardware coverage without a paid subscription. It is less suitable for buyers seeking AI features, a wider set of alert destinations, or a less technical monitoring workflow.

Your product? Our editors can test Heimdall in depth and publish a review, labelled as paid · from $149/mo →

Heimdall pricing

Plans Free planFree Free to use — no paid tier required for the core job.

See plans on github.com

Heimdall fact sheet

Free plan	Yes
Paid from	Free
Supported platforms	Windows, macOS, Linux, API, self-hosted
Remote monitoring	Yes
Monitored device limit	Not verified
Sensor history	Not verified
Alert channels	webhook
Custom sensor support	Not verified
Deployment	Desktop, Self-hosted
Platforms	Windows, macOS, Linux
Integrations	4 integrations: Prometheus, OpenMetrics, Grafana, Tailscale
Pricing	Free plan
Website	github.com
Facts checked	19 Sep 2026

Heimdall integrations

Heimdall lists 4 integrations on its own site.

Prometheus
OpenMetrics
Grafana
Tailscale

Alternatives to Heimdall

See all Heimdall alternatives →

Also Ranked In

Heimdall is ranked in 2 of our directories.

#28Remote Connection Manager Software29 tools ranked

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Featured on iTechGuides

Heimdall is listed in our Hardware Monitoring Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026

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Last updated 28 Sep 2026 · How we research and update