Dredd was created to be a simple way to detach application business logic in order to create a decision tree model best for visualize and perhaps easy to understand and maintain.
Vita is a light and simple library that helps you to share ViewModel
between fragments and activities, even you can create ViewModels
in application scope.
Waterfall Toolbar is an Android version of Material Design's web component waterfall toolbar. Basically, what it does is dynamize an ordinary Toolbar, increasing and decreasing its shadow when an associated view is scrolled.