What navigation apps does ETA for Apple CarPlay support

ETA for CarPlay works just like ETA on your other Apple devices in that you can start navigation from any of your locations. ETA for Apple CarPlay presents all your saved locations displayed in a list or on a map. Your upcoming appointments and meetings from your calendar are also listed. Tap a location to launch directions. ETA uses your preferences as set in ETA on iPhone and supports launching directions in Apple Maps, Google Maps, Waze and more.

At time of writing (May 2023) there appears to be an issue with Google Maps launching directions in Apple CarPlay. This is a Google Maps issue and not an ETA or CarPlay issue. You can track the progress of Google's fix here in Google's support forum.