KeyCue - Menu shortcuts are supposed to provide quick access to frequently used menu commands.
Haptic Touch Bar - The missing haptic feedback for Touch Bar keys
CheatKeys - View Windows keyboard shortcuts in the current application.
TouchBar for your old MacBook - Use Touch Bar on an iPad through USB connection
cheat - Cheat allows you to create and view interactive cheatsheets on the command-line.
Touch Bar Simulator - The macOS Touch Bar Simulator as a standalone app