StickyGridHeaders

StickyGridHeaders provides an enhanced GridView that shows items in sections with headers. By default the section headers will stick to the top of the view as sections scroll past like the People app in Android 4.x. StickyGridHeaders is designed to be low impact on your code base and you can easily interchange the original GridView with the one provided by StickyGridHeaders.
To use StickyGridHeaders in your projects, simply add this project to your workspace then add it as a library project to your current project. For additional information refer to the project readme.
By Tonic Artos

TimesSquare for Android

A simple, well-designed date picker for Android and iOS by Square.

SwipeListView

The folks over at 47 Degrees release the source code for the super-useful SwipeListView Widget.
SwipeListView is an Android List View implementation with support for drawable cells and many other swipe related features.
You can install the sample APK or watch it in action.

Holo Circular ProgressBar

HoloCircularProgressBar is a beautiful custom view implementation for Android you might know from the Android Clock App from Android 4.1.

ProgressFragment

Implementation of the fragment with the ability to display indeterminate progress indicator when you are waiting for the initial data. Based on ListFragment.