Twidere is a powerful twitter client for Android 4.0+, which gives you a full Material experience and nearly complete (and even better) Twitter feature.
Shuttle is an open source, local music player for Android.
News Stand app makes the ActionBar not boring!
This guide aims to introduce a beginner reactive programmer to the complete power of the RxJava implementation of reactive programming for the JVM. It is based on the IntroToRx guide for Rx.NET.
No experience with either reactive or functional programming is needed to follow the book. Familiarity with the basics of Java is required.
Dolphin is an emulator for running GameCube, Triforce and Wii games on Windows/Linux/OS X systems and recent Android devices.
c:geo is a simple yet powerful unofficial geocaching client for Android devices. In contrast to other similar applications, c:geo doesn't require a web browser nor file exports. You can just go geocaching with your phone and without any home preparation or worries.
Android (f/w 1.5+) on screen keyboard for multiple languages.
Collection of source codes, utilities, templates and snippets for Android development.
Unofficial Android REST Client for 9GAG.
Training courses to acquire basic knowledge and practical skills of Android app development.
JFYI: You could use Google Translate to translate from Japanese.
ListView with a sticky header.
This app is designed to demonstrate the various components of the Android Support libraries, in particular, showing how to implement Material design into your app, using these controls.
Project that demonstrates the entire animation stack present in the Uber app.
L Camera is an open-source experimental camera app for Android L devices using the new android.hardware.camera2 API.
Please note that this app is intended to test and study new features of the camera API, it is not for general uses as it lacks many basic camera features (location tagging, white balance, photo review, flash control, etc).
100% open source version of the popular Talon for Twitter app on Android.
Flym (FeedEx) News Reader is a light and modern Android feed reader, based on Sparse RSS.
ProductTour is android sample project implementing a parallax effect welcome page using
PageTransformer, similar to the one found in google's app like Sheet, Drive...
Android client for Project Tox - Secure Peer to Peer Messaging.
PDF Converter is an android project to perform a number of operations on PDF :
This Android project samples some Material Design-ish transitions for list items and floating action buttons. It uses the the shared element concept introduced in Android 5.0.
Android Studio Project using Support Library focused on get Google Maps 3 states behavior including background image parallax and toolbars animations.
Modern, easy and customizable app manager for Android with Material Design.
A simple Firebase chat application for Android.
HyperTrack Live open source repo uses HyperTrack to enable location sharing and real-time tracking of your friends and family. Scrape parts of this app to add live location sharing into your own app, or fork the repo and modify it to your own need to build your own brand new app.
Clean contacts is a sample repository to illustrate Clean architecture in Android. It has also many other details that hopefully will be useful too.
Open camera project - multi-functional camera application for android.
AcDisplay is a new way of handling notifications in Android.
It will let you know about new notifications by showing a minimal, beautiful screen, allowing you to open them directly from the lock screen. And if you want to see what's going on, you can simply take your phone out of your pocket to view all the latest notifications, in a similarly pleasing and minimalistic manner.