9-Cards
9 Cards was an open source home launcher for Android, whose code was all written in Scala. It provided features for organizing apps into collections, giving quick and easy access to the apps more frequently used, at will.
Since January 2019, the 9-Cards project is now abandoned, and the App is no longer available in the Google Play store. The source code repo has been left here, for those wishing to study or to re-create it, published under the Apache License.
For a full list of changes please view:Changelog. For instructions for building an using the app, see the old README.