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

Implementation of ImageView for Android that supports zooming, by various touch gestures.

Guice (pronounced 'juice') is a lightweight dependency injection framework for Java 11 and above, brought to you by Google.

An Android library that allows you to easily create applications with slide-in menus. You may use it in your Android apps provided that you cite this project and include the license in your app. Th…

A configuration as code language with rich validation and tooling.

A Java API for generating .java source files.

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

Annotation-triggered method call logging for your debug builds.

Bootstrap style widgets for Android, with Glyph Icons

Catch common Java mistakes as compile-time errors

[DEPRECATED] Action bar implementation which uses the native action bar on Android 4.0+ and a custom implementation on pre-4.0 through a single API and theme.

⚠️ Processing moved to processing/processing4 ⚠️

A Java library that models spring dynamics and adds real world physics to your app.

An Android staggered grid view which supports multiple columns with rows of varying sizes.

Standalone Android widget for picking a single date from a calendar view.

Generates a unified GraphQL schema from gRPC microservices and other Protobuf sources

Native navigation library for React Native applications

A React Native wrapper around the Facebook SDKs for Android and iOS. Provides access to Facebook login, sharing, graph requests, app events etc.

BitTorrent library and client with DHT, magnet links, encryption and more

Open-source plugins included in the distribution of IntelliJ IDEA Ultimate and other IDEs based on the IntelliJ Platform

React native bridge for AppAuth - an SDK for communicating with OAuth2 providers

A Java library for sending APNs (iOS/macOS/Safari) push notifications

OkBuck is a gradle plugin that lets developers utilize the Buck build system on a gradle project.

A simple tool to allow easy bug report capturing within your app.

A simple example of a responsive Month Calendar app widget for Android

The home of the Unicode Common Locale Data Repository

WebSockets (hybi13/RFC) and socket.io client for Android

Read data from public transit cards using your NFC Android phone!

A fully-featured music app that contains various elements of Material Design.

Background services and web workers for react-native