DOTKey - 21st century typing for 21st century devices
HapticKey - Trigger haptic feedback when tapping Touch Bar
Logitech Bluetooth Multi-Device Keyboard K480 - Whilst the keyboard functionality itself is quite basic, the ease with which you can switch between devices, and the added cradle for supporting tablet and/or phone make this a useful keyboard for anyone wanting one keyboard to rule them all.
Haptic Touch Bar - The missing haptic feedback for Touch Bar keys
Image Search Keyboard - Search Google Images right in your keyboard
Touch Bar Simulator - The macOS Touch Bar Simulator as a standalone app