RoboSpock combines two great test frameworks and lets you get the best of both - to run fast unit test written with Groovy on local JVM. It integrates well with Gradle build system and works with older Ant based projects.
The Easy Exchange library brings quick and easy currency exchange to Android.
Rosie is an Android framework to create applications following the Clean Architecture.
Rosie divides your application in three layers, view, domain and repository. For each layer, Rosie provides plenty of classes that will make defining and separating these concerns much easier.