EcoBee is what I bought when the writing was on the wall with Nest. Works with HomeKit, so EcoBee could go under tomorrow and Apple stuff can still talk to it.

EcoBee is what I bought when the writing was on the wall with Nest. Works with HomeKit, so EcoBee could go under tomorrow and Apple stuff can still talk to it. Or if an open solution is more to your liking, works with Home Assistant, too, though it goes through the API to work.