Alex Wolkov has written a very nice post about Touch Bar customization using BetterTouchTool:
A few words about the current state of the Touch Bar integration in BTT:
- It’s quite stable now and offers many customization options.
- You can specify custom Touch Bars for every app or globally
- You can change how the Touch Bar should appear for every app (e.g. if you want to show the BTT Touch Bar only for certain apps)
- You can create Touch Bar button groups
- There are three widgets, more to come. (Currently, Battery Time, Date/Time and an App Switcher widget are available)
The most current version with Touch Bar support can be downloaded here: http://bettertouchtool.net/releases/BetterTouchTool.zip