There are a few different types of garage door openers that work with alarm.com. The most popular type is the Chamberlain MyQ Garage Door Opener. This opener works with both Apple HomeKit and Amazon Alexa, so you can use voice commands to open and close your garage door. You can also set up alerts so that you'll be notified if your garage door is left open.
Another option is the Gogogate2 Garage Door Opener, which also works with Amazon Alexa and Google Assistant. With this opener, you can use your smartphone to open and close your garage door, as well as receive notifications if it's been left open.
If you're looking for a more basic model, the Craftsman Smart Garage Door Opener works with Amazon Alexa but doesn't have some of the advanced features of the other two options. However, it's still a reliable choice that will allow you to control your garage door from your phone or voice assistant.