Android

Charting Engine.

Chart and graph library.

Chart library with good motion capabilities.

Chart and graph library with support for scaling, scrolling and animations.

An Android chart and graph library supporting scaling and dragging by gesture.

Draw Creative Statistic Arc Charts.

Data visualization library, Interactive charts.

A small library to create reactive UI components, inspired by React. Provides data binding and event listener binding, fits well for MVVM.

A fast dependency injector for Android and Java.

Android Library that provide simpler way to start the Activities with multiple arguments.

Java annotations with dependency injection at compile time.

A scope tree based Dependency Injection (DI) library for Java.

An alternative to Android AIDL for Android Remote IPC services using plain java interfaces.

Bind Android services and callbacks to fields and methods.

Cross-platform game engine and SDK. Open Source

Android OpenGL ES 2.0/3.0 Engine

An easy open source Android Native Game FrameWork.

A ratcheting forward secrecy protocol that works in synchronous and asynchronous messaging environments.

Multi-language framework for making typical encryption schemes easy to use: data at rest, authenticated data exchange, transport protection, authentication, and so on.

Simple Android pagination library

Fading action bar effect that can be seen in the new Play Music app.

Library to create applications with slide-in menus.

Simple library that helps to create awesome sliding android app tutorials.

An interactive indicator to navigate between the different pages of a ViewPager.

Support for horizontally scrolling ViewPager.

An efficient TabLayout library implemented with RecyclerView.

Simple take on a material design navigation drawer.

Debug menu to enable leakcanary, scalpel and others easy.

A simple Floating Action Button that shows an anchored Navigation View.

Kotlin library for simplifying animations and transitions in Jetpack Compose.

Rebound is a Java library that models spring dynamics.

Cute view animation collection.

Allows the easy creation of view transitions that react to user inputs.

Makes creating complex animations for views easy.

Android library for swipeable gestures to control volume , brightness and seek .

Android Library that lights items for tutorials or walk-throughs etc...

Explore new style in material design by adding curve below image view.

Library project for cropping images.

Custom view for circular images while maintaining the best draw performance.

Library project for applying image filters easily.

Compressor is a lightweight and powerful android image compression library.

Library to display images in different shapes.

FloatingLabel Allows you to create a blow kind of EditText. Doesn't have Gradle or Maven Support.

Supporting Floating Labels, Single Line Ellipsis, Max/Min Characters, Helper Text and Error Text with Custom Colors.

Adds emoticons to your app

Material Design Search Bar for Android

Pattern-based user input formatter, parser and validator.

Password EditText that allows to custom toggle button

An overlay that gets your user’s voice permission and input as text in a customizable UI.

Three Material Dots Indicators styles for View Pagers.

A powerful image downloading and caching library for Android.

Asynchronous, out of the box loading and caching of images.

An image loading and caching library for Android focused on smooth scrolling, Recommended by Google.

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

Glide Bitmap Pool is a memory management library for reusing the bitmap memory.

Image loading for Android backed by Kotlin Coroutines.

Android Library that lets you to select multiple images, video or voice for Android

A library that makes images and videos selection from gallery feels easy. It also support GIF and simple camera action

Android/iOS video player based on FFmpeg n3.2, with MediaCodec, VideoToolbox support.

ExoPlayer is an application level media player for Android, allow playing audio and video both locally and over the Internet. Supports features like Dynamic adaptive streaming over HTTP (DASH), SmoothStreaming and Common Encryption

Custom Android view with video player, play/stop, loader and placeholder image.

Simple way to take or select photos of your gallery, with other features for manage pictures.

Use Android camera to take pictures and videos, based on camera2 api.

A simple and annotation-based way to validate your input fields.

Gson is a Java library used for serializing and deserializing Java objects from and into JSON.

High-performance JSON processor.

A modern JSON library for Android and Java.

No Force Close any more.

Good networking library for android.

An HTTP+SPDY client for Android and Java applications.

Library that makes writing asynchronous network requests easy.

Fast, Simple and Easy Networking for Android

Run Node.js on Android.

A Dns library, user can use custom dns server, dnspod httpdns. Only support A record.

HTTP Web server for mocking API responses in Android Instrumentation tests.

A Complete Fast Android Networking Library that also support HTTP/2.

Easy, asynchronous, annotation-based SOAP for Android.

Simple, pretty and powerful logger for android

A logger with a small, extensible API which provides utility on top of Android's normal Log class.

An OkHttp interceptor which pretty logs request and response data.

Upload your logs and check them online, specially made for mobile

Simple Lightweight logger

Logback port to Android which provides a highly configurable logging framework for Android apps.

Pulls notifications from a remote JSON file and shows them in your app.

Way to set heartbeat interval and users receive PushNotifications from GCM.

Provides a simple way to view the contents of the in-app database for debugging purposes.

manage database creation and version management using an application's raw asset files.

The alternative to SQLite and ORMs: Simple, modern and fast! Object oriented API and multi platform support.

Copies a realm database from the apk assets folder. Efficiently handles versioning of read-only realm databases.

A wrapper to replicate android's SQLiteDatabase with restoring capability.

A NoSQL embedded document store for Android with MongoDb like API.

Compile time ORM and SQL query library for Java & Android.

Fast and powerful ORM with compile-time annotation processing.

Object graph and persistence framework for Android.

A simple NoSQL client for Android. Meant as a document store using key/value pairs and some rudimentary querying. Useful for avoiding the hassle of SQL code.

Reactive extensions for SimpleNoSQL. Manipulate entities using Observables.

A Rest Client for Android.

Test automation framework for black-box UI tests.

AssertJ assertions geared towards Android.

Run your Cucumber tests in your Android instrumentation tests.

Allows you to calculate the direction between two locations and display the route on a Google Map using the Google Directions API.

Extending capabilities of Google Maps Android API v2, adding marker clustering among other things

Scale bar for Google Maps Android API

Secured Preferences using Facebook Secure Encryption called Conceal.

Event Bus for Android.

Memory safer implementation of android.os.Handler.

Secure Preference Manager for android. It uses various Encryption to protect your application's Shared Preferences.

Catch memory leaks as they occur.

An Android event bus for WebView and JS.

A vm for assessing android applications.

Android library to help you incorporate MVP along with Passive View and Presentation Model patterns into your app.

Get device information in a super easy way.

Capture photos/videos from device camera or get photos/video from gallery app with no runtime permissions needed.

An utilities class to validate text inside TextInputLayout.

A DSL to handle soft keyboard visibility change event.

A stopwatch library for android which makes it easy to start, pause, display and maintain multiple stopwatches in an app.

Reactor is a fast and secure key-value library for Android.

Show logcat inside the device for debug builds

View the entire hierarchy in 3d in the phone.

Debug hierarchy and network from chrome.

Android Debug Database is a powerful library for debugging databases and shared preferences in Android applications.

a command-line tool to assist in debugging Android-powered devices

a command-line wrapper around ADB for developers, so that, developers don't have to remember esoteric version-dependent commands

a colored command-line ADB wrapper that only shows log entries for a specific application package

Simplifies the work with Bluetooth SMART devices (a.k.a. Bluetooth Low Energy in Bluetooth 4.0).

Android Chat and Messaging SDK for adding real time chat and in-app messaging into your android application.

Qiscus SDK is a lightweight and powerful android chat library. Qiscus SDK will allow you to easily integrating Qiscus engine with your apps to make cool chatting application.

Kommunicate provides open source live chat sdk in android. Kommunicate lets you add real time live chat and in-app messaging in your mobile (android, iOS) applications and website for customer support.

Add voice, video and text chat to your app (and website) in minutes using CometChat. CometChat's SDK includes a complete ready UI so that you don't have to spend any time building one! That's not all, CometChat has out-of-the-box support for real-time translation, whiteboards, screen sharing, friends sync, role based access control, credits deduction and more.

Custom Dialog to record audio, store it and play it in your phone.

offers a hijri (Islamic Calendar) Date Picker designed on Google's Material Design Principals For Pickers.

A simple library for creating animated alerts/dialogs/warnings.

comprehensive and feature rich library, including support for checks at Amazon and FDroid.

comprehensive features and a "companion" iOS solution.

focused feature set that mimicks the popular iOS library of the same name. Supports Play and Amazon.

version checking callback framework with no UI.

An adaptation of the JSR-310 backport for Android.

Joda-Time library with Android specialization.

Android NTP time library. Get the true current time impervious to device clock time changes.

Simple annotation-based API to handle runtime permissions.

Android runtime permissions powered by RxJava.

Simple Android library for permissions request. Consists of only one class.

Simple RunTime permission manager.

Simplifying Android Permissions.

EasyPermissions is a wrapper library to simplify basic system permissions logic when targeting Android M or higher.

Licensee is a Gradle plugin which validates the licenses of your dependency graph match what you expect, or it fails your build!

A lightning fast, transactional, file-based FIFO for Android and Java.

Collections, caching, primitives support, concurrency libraries, common annotations, string processing, I/O, and so forth.

Allows to run scripting languages on Android.

Implementation of a Job Queue to easily schedule jobs (tasks) that run in the background, improving UX and application stability.

Asks the user if (s)he wants to open the Play Store to rate your application.

Lib provides a simple way to display an alert dialog for rating app.

Integration with Barcode Scanner via Intent.

Java 8 Lambdas on Android!

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

Adds minimum RxJava bindings for easy writing of reactive Android java code.

RxBinding – RxJava binding APIs for Android UI widgets from the platform and support libraries.

A collection of utility classes that help make Android development faster.

Automatically generates an About this app section, with a list of used libraries.

A view that loads audio from an url and have basic playback tools.

command line tool help you sync dependencies, sdk or build tool version.

An Android library that makes it easy to use custom fonts in views.

Custom fonts in Android an OK way.

command line tool help you manage localization string files.

It makes a preview from an url, grabbing all the information such as title, relevant texts and images.

Detecting gestures in a snap.

A customized video view that will automatically pause video is user is not looking at device screen!

FlexboxLayout is a library which brings the similar capabilities of CSS Flexible Box Layout Module to Android.

The boiler plate is based on MVP architecture and it is fully based on Dependency Injection design pattern using Dagger2.

A kotlin dsl to simplify dependencies management

Teller facilitates the downloading, saving, and reading of the cached data of your app. Keep your user's data fresh and remove those annoying loading screens!

A framework for building native apps with React by Facebook.

Cordova based applications are, at the core, applications written with web technology: HTML, CSS and JavaScript.

Build cross-platform Native Progressive Web Apps for iOS, Android, and the web. Very promising Cordova alternative.

Library for less painful Android development with Scala.

A modular functional UI language for Android.

Gradle Plugin for Compiling Groovy for Android.

A multi-purpose Groovy library containing view injection and threading for Android using annotations.

DSL for Android written in Kotlin by JetBrains.

Android view injection written in Kotlin based on ButterKnife

Some basic Android code samples written in Kotlin.

Set of programming challenges thats helps to improve whiteboard coding and problem-solving skills.

Lightweight library providing useful extensions to eliminate boilerplate code in Android SDK.

This app help user to save links easily, and can export to Evernote as weekly.

A base project using the Uncle Bob's clean architecture with Kotlin language and the latest Android technologies.