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OhmGraphite

Free plan Windows

What OhmGraphite is

OhmGraphite is a free Windows service that exports hardware sensor readings to metric stores for Grafana or another time-series interface. Supported destinations are Graphite, InfluxDB, Prometheus, Postgres, and TimescaleDB. Example measurements include CPU and GPU power, voltage, frequency, load, and temperature, plus disk activity and space, fan speed, and network consumption. LibreHardwareMonitor supplies the sensor data, so available readings depend on the computer’s hardware. PawnIO enables access to readings such as CPU temperature, wattage, and frequency; without it, OhmGraphite still runs but emits less data. Setup involves downloading a ZIP, configuring the application, and installing it as a Windows service, with interactive operation also available. Prometheus mode polls sensors when scraped and supports optional HTTPS configuration. Environment variables can hold database credentials. Users can rename or hide sensors and disable categories such as CPU, GPU, network, or storage. Postgres and TimescaleDB schemas and columns are not configurable.

Who it suits

OhmGraphite suits Windows users who want hardware metrics in Grafana or another time-series UI. It is aimed at remote monitoring through supported metric stores rather than a standalone sensor dashboard.

What it does well

Free Windows service
Supports five metric-store destinations
Exports broad hardware measurements
Prometheus scrape mode available
Sensor names and categories are configurable

What to know first

Sensor availability depends on hardware
PawnIO is needed for some readings
Postgres schemas and columns cannot be configured
Requires metric-store and dashboard setup

Plans

Plan	Billed and limits	Price
OhmGraphite	Windows service · hardware sensors · exports to Graphite, InfluxDB, Prometheus, Postgres, or TimescaleDB	Free

As github.com lists them, read 11 Oct 2026. The maker's own page has the final word.

Verdict

OhmGraphite provides a direct route from Windows hardware sensors to several monitoring back ends. Its usefulness depends on available sensors and willingness to configure a metric store and visualization system.

Facts from OhmGraphite's own pages

Certificate handling: The README says server certificates are verified by default and documents importing a server certificate for connections using self-signed certificates. · github.com, 11 Oct 2026
Credentials: Configuration values can reference environment variables so InfluxDB tokens and Postgres connection strings do not need to be stored directly in the config file. · github.com, 11 Oct 2026
Customization: Users can rename or hide individual sensors and disable sensor collection for hardware categories such as CPU, GPU, network, or storage. · github.com, 11 Oct 2026
Hardware support: Hardware sensor support is provided through LibreHardwareMonitor, and detected sensors depend on the computer's hardware. · github.com, 11 Oct 2026
Installation: The README instructs users to download a ZIP, configure the app, and install it as a Windows service; it can also run interactively. · github.com, 11 Oct 2026
Intended users: The README describes using exported hardware metrics with Grafana or another time series UI, and suggests HWINFO for people who only want a hardware-sensor GUI without configuring Grafana and a metric store. · github.com, 11 Oct 2026
Limit: When using Postgres or TimescaleDB, the database schema and columns are not configurable. · github.com, 11 Oct 2026
Metric stores: Supported destinations are Graphite, InfluxDB, Prometheus, Postgres, and TimescaleDB. · github.com, 11 Oct 2026
Prometheus mode: The Prometheus exporter listens for scrapes and polls hardware sensors when scraped; the README documents optional HTTPS configuration. · github.com, 11 Oct 2026
Purpose: OhmGraphite is a Windows service that exports hardware sensor data to a metric store for dashboards in Grafana or another time series UI. · github.com, 11 Oct 2026
Sensor access: PawnIO enables access to sensors such as CPU temperature, wattage, and frequency; without it, OhmGraphite works but emits limited data. · github.com, 11 Oct 2026
Sensor metrics: Example metrics include CPU and GPU power, voltages, frequencies, component load, temperatures, disk activity and space, fan speed, and network consumption. · github.com, 11 Oct 2026
Support: The README directs users who remain stuck to open a GitHub issue and include relevant log excerpts. · github.com, 11 Oct 2026

Where OhmGraphite stands on Freedom251

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