Touch Bar as a standalone app
To manually install Touch Bar Simulator with Homebrew, use the following command:
Current version of Touch Bar Simulator.app: 1.2.0
ARM: https://github.com/sindresorhus/touch-bar-simulator/releases/download/v1.2.0/Touch-Bar-Simulator-1.2.0.dmg
Intel: https://github.com/sindresorhus/touch-bar-simulator/releases/download/v1.2.0/Touch-Bar-Simulator-1.2.0.dmg
Website: https://github.com/sindresorhus/touch-bar-simulator