Free and Open Source, Distributed, RESTful Search Engine

Termux - a terminal emulator application for Android OS extendible by variety of packages.

Free universal database tool and SQL client

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

A libre lightweight streaming front-end for Android.

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

Telegram for Android source

Bind Android views and callbacks to fields and methods.

a fast, scalable, multi-language and extensible build system

Desktop/Android/HTML5/iOS Java game development framework

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

A fast dependency injector for Android and Java.

An Android library for managing images and the memory they use.

The official home of the Presto distributed SQL query engine for big data

Android Transition animations explanation with examples.

Cute view animation collection.

Fast Android Development. Easy maintainance.

The Clojure programming language

An asynchronous, callback-based Http client for Android built on top of Apache's HttpClient libraries.

A Camera component for React Native. Also supports barcode scanning!

Android library to observe scroll events on scrollable views.

Ultra Pull to Refresh for Android. Support all the views.

This is a library with components of Android L to you use in android 2.2

A Material Design ViewPager easy to use library

A podcast manager for Android

SweetAlert for Android, a beautiful and clever alert dialog

Reactive Programming for Android

A custom ViewPager title strip which gives continuous feedback to the user when scrolling

RichEditor for Android is a beautiful Rich Text WYSIWYG Editor for Android.

An amazing and convenient Android image slider.