Watchman

The skill works in conjunction with Watchman hardware and Watchman app (available in Appstore and Google Play store). User must sign up for the service, sign in the app and configure actual garage hardware gateway and sensors, link Watchman's account in for this skill before controlling the garage doors by voice.
Your Watchman garage can be fully controlled by voice. After linking your Watchman account with Amazon account, user just commands Alexa to control your named garage door.