SpeedFan - Hardware monitor for Windows that can access digital temperature sensors located on several 2-wire SMBus Serial Bus. Can access voltages and fan speeds and control fan speeds. Includes technical articles and docs.

Keyboarding Master - Product webpage for Keyboarding Master

Argus Monitor - Argus Monitor is for monitoring and analyzing the temperature and the health status of the hardware parts of the system.

UCR: Universal Control Remapper - With today’s release of the Universal Control Remapper, users can now customize their keyboards, mice, and other peripherals for most platforms with a few clicks of a button.

Open Hardware Monitor - Monitors temperature sensors, fan speeds, voltages, load and clock speeds, with optional graph.

SignalRGB - Control and sync your favorite RGB devices from any brand.