Windows and macOS have similar clients (Hass.Agent for Windows and Home Assistant for macOS).
I’ve found these kinds of clients useful because I can remotely wake-up or sleep computers, track how long they are turned on for, and automatically pause my lights and music when my webcam turns on.
Oh neat!
I made a custom solution for WOL and remote shutdown using nodered and MQTT, but this is so cleaner than maintaining a custom solution
If you’re using it, Home Assistant natively supports Wake On Lan. This would only be able to handle the shutdown/sleep side of things.