RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

An image loading and caching library for Android focused on smooth scrolling

Event bus for Android and Java that simplifies communication between Activities, Fragments, Threads, Services, etc. Less code, better quality.

FizzBuzz Enterprise Edition is a no-nonsense implementation of FizzBuzz made by serious businessmen for serious business purposes.

Modular and customizable Material Design UI components for Android

A declarative API to handle Android runtime permissions.

Virtual Engine for Android(Support 14.0 in business version)

This library provides a simple way to add a draggable sliding up panel (popularized by Google Music and Google Maps) to your Android application. Brought to you by Umano.

Learning RxJava for Android by example

Material Design Music Player

A podcast manager for Android

[Archived] Highlight the best bits of your app to users quickly, simply, and cool...ly

Material design file manager for Android

RecyclerView extension library which provides advanced features. (ex. Google's Inbox app like swiping, Play Music app like drag and drop sorting)

RxJava 2 Android Examples - How to use RxJava 2 in Android

MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap-memory. It is a fast and easy to use embedded Java database engine.

Android component which presents a dismissible view from the bottom of the screen

Android Database - first and fast, lightweight on-device vector database

[DEPRECATED] Android floating action button

Cute library to implement SearchView in a Material Design Approach

Groupie helps you display and manage complex RecyclerView layouts.

A solution for streaming H.264, H.263, AMR, AAC using RTP on Android

Android java library for FFmpeg binary compiled using https://github.com/writingminds/ffmpeg-android

UI form validation library for Android

OpenStreetMap-Tools for Android

A simple watchdog that detects Android ANR (Application Not Responding) error and throws a meaningful exception

A Java API to read, write and create MP4 files

A material designed music player for Android

A Material Design themed ShowcaseView for Android

A library that extends the Android toast framework.