Livebook was created for machine learning in Elixir but Livebook isn’t limited to machine learning. I found it works really well for documenting important app logic too! It combines markdown documentation with your project code and even executes the code showing the results. Livebook can be a new tool for documenting important parts of your application making it easier for new devs ramping-up on the project. They can get a guided tour of those imporant parts of the app and even interactively play with it at the same time!