Home Assistant (aka Hass.io) is a popular automation system sort of like SmartThings but it's open source.

Here's how you trigger commands on your computers from Home Assistant using a RESTful Command.

Add this to the end of your configuration.yaml file:

rest_command: triggercmd_calculator: url: 'https://www.triggercmd.com/api/run/triggerSave' method: "post" content_type: "application/x-www-form-urlencoded" payload: "trigger=calculator&computer=russfam&token=(your token from Instructions page)"

You can test it by clicking the little cell phone icon in the lower left under Developer tools, then select rest_command.triggercmd_calculator in the Service field, then click CALL SERVICE. This is what it should look like:

I installed Home Assistant on my QNAP nas as a Docker container. If you do that, I recommend these two settings: