If you have a MyQ-enabled garage door opener, and you want to hook your door into HomeKit, take a look at Homebridge. Homebridge is a NodeJS server that runs on your Mac, or on a Linux machine such as a Raspberry Pi. Homebridge acts as a HomeKit bridge and allows you to use certain non-HomeKit devices with HomeKit. That might sound like a mouthful, and it certainly isn’t trivial to set up, but it isn’t as difficult as it might seem.