TouchBar for your old MacBook - Use Touch Bar on an iPad through USB connection
Pretzel - Keyboard shortcuts for the app you're currently using
Touch Bar Simulator - The macOS Touch Bar Simulator as a standalone app
KeyCue - Menu shortcuts are supposed to provide quick access to frequently used menu commands.
HapticKey - Trigger haptic feedback when tapping Touch Bar
Hotkey Commander - Find out and override what hotkey combination is registered by which application.