Slack Developer Kit (including Bolt for Java) for any JVM languages
Free implementation of Play Services
Cross-platform framework for building truly native mobile apps
Build cross-platform native progressive web apps for iOS and Android
Java UI Framework for Desktop/iOS/Android
Android client application
A Java wrapper to run Spring, Spring Boot, Jersey, and other apps
The Leading Security Assessment Framework for Android
A tool for reverse engineering Android apk files
A Java to iOS Objective-C translation tool and runtime
Comprehensive programming and configuration model for modern apps
Uber's cross-platform mobile architecture framework
AndroidIDE is an IDE for Android to develop full featured Android apps
A complete solution for apps using root permissions
Type-safe HTTP client for Android and Java by Square
Used to integrate Android apps with Facebook Platform
A flexible, stable, easy-to-use Android plug-in framework
Samples demonstrating how to use Maps SDK for Android
Vaadin 6, 7, 8 is a Java framework for modern Java web applications
Modular and customizable Material Design UI components for Android
OkBuck is a gradle plugin that lets developers build systems
The binary distribution of openHAB
Gradle/Maven plugin to package Java applications as native Windows
Your Cheat Sheet For Android Interview