Alternatives to Open Hardware Monitor
Open-source reader for temperature, fan and voltage sensors. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Open Hardware Monitor
Open-source reader for temperature, fan and voltage sensors.
Replacements
Listings that take over the same core job as Open Hardware Monitor.
Libre Hardware Monitor
Reads temperatures, fan speeds and voltages straight off the motherboard, and feeds them to other tools.
Libre Hardware Monitor is the actively maintained fork under the same MPL-2.0 licence, reading motherboard, CPU, GPU, drive and network sensors, but it runs on Windows only.
HWiNFO
The deepest hardware report and sensor monitor on Windows, free for personal use.
HWiNFO is closed source and Windows-only, adding logging, alerts and an on-screen display with deeper hardware reports, and commercial use needs a paid Pro licence.
HWMonitor
A Windows hardware monitor that reads voltages, temperatures, fan speeds, power and clock sensors.
HWMonitor is closed source and Windows-only with ARM64 builds, reading a wide range of sensors, while graphs and remote monitoring require the paid PRO version.
AIDA64 Extreme
Detailed hardware identification, sensor monitoring and benchmarking for Windows.
AIDA64 Extreme is a paid Windows-only tool that adds detailed hardware inventory, benchmarking and reports, and can send sensor readings to an external display or remote client.
Speccy
Quick summary of a Windows PC's hardware and temperatures.
Speccy is closed source and Windows-only, giving a one-page hardware and temperature summary with shareable snapshots, though its development has slowed considerably.
Core Temp
Small utility that reads per-core CPU temperature on Windows.
Core Temp is a closed-source Windows utility that reads only per-core CPU temperatures, with optional overheat protection actions, and its installer offers bundled software to decline.
lm-sensors
Linux command-line utilities and a library for reading hardware temperature, voltage and fan sensors.
lm-sensors is open source and reads temperatures, voltages and fans on Linux from the command line, with no graphical interface.
Also worth comparing
These listings name Open Hardware Monitor as their own alternative, so the relationship runs both ways.
NZXT CAM
A free Windows app that monitors PC performance and controls NZXT fans, lighting and LCDs.
Open Hardware Monitor is open source and reads temperatures, fans and voltages, but upstream development stopped and newer hardware is often unrecognised.
TrafficMonitor
A Windows floating window and taskbar widget showing network speed, CPU, memory and temperatures.
Open Hardware Monitor shows sensor readings in the tray or a desktop gadget on Windows and Linux, but upstream development stopped years ago.
Similar software
Related functionality, not a direct replacement.
FanControl
Controls CPU, GPU and case fans using custom curves from any temperature sensor.
GPU-Z
A tiny Windows utility that reports everything about your graphics card: clocks, memory type, bus width, sensors and BIOS.
CPU-Z
A tiny freeware window that tells you exactly which processor, board and memory are in a Windows PC.
Hard Disk Sentinel
Drive health, temperature and lifetime monitoring for HDDs and SSDs.
Conky
Display live system information in configurable desktop widgets.
ThrottleStop
A small Windows utility that monitors and corrects Intel CPU throttling, especially on laptops.