32) Parallax Scrolls
Parallax ScrollView and ListView for Android
Google Play Demo App:
33) Android Ultra-Pull To Refresh
It’s a replacement for the deprecated pull to refresh solution. It can contain any view you want.
It’s easy to use and more powerful than SwipeRefreshLayout.
It’s well designed, you can customize the UI effect you want as easy as adding a headview to ListView.
34) List of Open Source Android Projects
List of basic android implementations.