Here's a list of all HomeKit compatible appliances for the connected home
HomeKit: Devices, Reviews, Workflows, and Use Cases - 9to5Mac
Gift Guide: Best HomeKit Devices and Accessories - AppleToolBox
Doorbells - iPad mini 4 - Smart Home Accessories - All Accessories - Apple (CA)
Amazon.com: Eve Energy - Apple HomeKit Smart Home, Smart Plug & Power Meter with Built-in Schedules & Switches, App Compatibility, Bluetooth and Thread : Everything Else
Anybody can now make HomeKit accessories | TechCrunch
Locks - Apple Watch SE - HomeKit - All Accessories - Education - Apple
The latest Apple HomeKit-compatible smart home devices » Gadget Flow