A base project using the Uncle Bob's clean architecture with Kotlin language and the latest Android technologies.
Some basic Android code samples written in Kotlin.
DSL for Android written in Kotlin by JetBrains.
Cordova based applications are, at the core, applications written with web technology: HTML, CSS and JavaScript.
A list of awesome Android tutorials, videos and tools for performance optimization.
Booster is an optimization toolkit for Android applications.
Build cross-platform Native Progressive Web Apps for iOS, Android, and the web. Very promising Cordova alternative.
Framework to create native iOS and Android Apps (especially Games).
Google's mobile app SDK for high-quality native interfaces for Android and iOS in very quick time.
Gradle Plugin for Compiling Groovy for Android.
Introduction to Groovy on Android.
A framework to build hybrid apps with mobile-optimized HTML, CSS and JS with AngularJS.
Lightweight library providing useful extensions to eliminate boilerplate code in Android SDK.
Lightweight dependency injection framework for Kotlin
Set of programming challenges thats helps to improve whiteboard coding and problem-solving skills.
Android view injection written in Kotlin based on ButterKnife
A modular functional UI language for Android.
An open-source framework to build native iOS and Android apps with JavaScript from a single code base.
Open source framework by Adobe to create cross platform mobile apps using HTML, CSS, and JavaScript.
A framework for building native apps with React by Facebook.
This app help user to save links easily, and can export to Evernote as weekly.
Library for less painful Android development with Scala.
A multi-purpose Groovy library containing view injection and threading for Android using annotations.
Open-source framework to create 'native' cross platform apps using JavaScript.
Framework to create native iOS, Android, Mac and Windows apps in C#.
Automatically generates an About this app section, with a list of used libraries.
Charting Engine.
ActionBar for older Android versions.
Active record style ORM.
Android Library that provide simpler way to start the Activities with multiple arguments.
a command-line wrapper around ADB for developers, so that, developers don't have to remember esoteric version-dependent commands
Add push notifications in your Android chat apps in Kotlin with the help of CometChat Pro and Firebase Cloud Messaging (FCM).
The boiler plate is based on MVP architecture and it is fully based on Dependency Injection design pattern using Dagger2.
command line tool help you sync dependencies, sdk or build tool version.
a command-line tool to assist in debugging Android-powered devices
Android Debug Database is a powerful library for debugging databases and shared preferences in Android applications.
Way to set heartbeat interval and users receive PushNotifications from GCM.
A library that makes images and videos selection from gallery feels easy. It also support GIF and simple camera action
Extending capabilities of Google Maps Android API v2, adding marker clustering among other things
Implementation of a Job Queue to easily schedule jobs (tasks) that run in the background, improving UX and application stability.
Allows to run scripting languages on Android.
The Android Support Library package is a set of code libraries that provide backward-compatible versions of Android framework API.
Cute view animation collection.
Official Android HTTP library that makes networking for easier and faster.
Library project for cropping images.
Library project for applying image filters easily.
It makes a preview from an url, grabbing all the information such as title, relevant texts and images.
Pulls notifications from a remote JSON file and shows them in your app.
Allows the easy creation of view transitions that react to user inputs.
Makes creating complex animations for views easy.
Java annotations with dependency injection at compile time.
Fillable progress view working with SVG paths. Nice option too for creating interesting app logos.
Grid view which supports multiple columns with rows of varying sizes.
A vm for assessing android applications.
Animated Expanding ListView provides a fancy animation on expanding or collapsing the content of a listview item.
A small library to create reactive UI components, inspired by React. Provides data binding and event listener binding, fits well for MVVM.
Data visualization library, Interactive charts.
Android Chat and Messaging SDK for adding real time chat and in-app messaging into your android application.
Remote Android and iOS debugging and data collection service. You can debug networking, logs, SQLite and mock device's geo location.
comprehensive and feature rich library, including support for checks at Amazon and FDroid.
Cross platform crash reporting/analytics solution. Supports NDK log.
Draw Creative Statistic Arc Charts.
Simple RunTime permission manager.
AssertJ assertions geared towards Android.
Lightweight audiowave progressbar
A view that loads audio from an url and have basic playback tools.
Facebook like chat bubble library
Upload your logs and check them online, specially made for mobile
Cross platform error monitoring. Free tier. Support for SDK & NDK. Error reports include data on device, release, user, and allows arbitrary data.
Build a one-one-one Android chat app in Kotlin within few minutes using CometChat Pro. This tutorial discusses the features such as login, getting list of contacts, user presence indicators, sending/receiving messages etc.
View "injection" library for Android.
Runtime code generation library with support for Android.
A collection of utility classes that help make Android development faster.
Custom fonts in Android an OK way.
Use Android camera to take pictures and videos, based on camera2 api.
Android Library to build a UI Card.
No Force Close any more.
A simple library for creating circular progressbars for Android.
Custom view for circular images while maintaining the best draw performance.
Analytics platform and user-engagement platform with 1 million free events
Unified API Library for: Cloud Storage, Social Profiles, Payment, Email, SMS & POIs.
Cross-platform 2d game framework.
Image loading for Android backed by Kotlin Coroutines.
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.
Compressor is a lightweight and powerful android image compression library.
Secured Preferences using Facebook Secure Encryption called Conceal.
A simple and annotation-based way to validate your input fields.
Open source mobile & web analytics, push notifications and crash reporting platform, based on Node.js, MongoDB and Linux.
Explore new style in material design by adding curve below image view.
A material calendar widget with infinite scrolling, date range selection and color customization.
Access the sqlite easily via direct database access or through the ContentProvider framework.
A fast dependency injector for Android and Java.
Official Android Data Binding Library to write declarative layouts and minimize the glue code necessary to bind application logic and layouts.
Fast and powerful ORM with compile-time annotation processing.
Provides a simple way to view the contents of the in-app database for debugging purposes.
Debug menu to enable leakcanary, scalpel and others easy.
A customizable loading animation with Dots.
Drag and drop to reorder items in a list, grid or board.
An Android event bus for WebView and JS.
Android library to help you incorporate MVP along with Passive View and Presentation Model patterns into your app.
Lib provides a simple way to display an alert dialog for rating app.
An simple ui library that provides a plugable signature view.
Get device information in a super easy way.
The flexible, easy to use, all in one app intro library for your Android project.
EasyPermissions is a wrapper library to simplify basic system permissions logic when targeting Android M or higher.
Chart and graph library.
Beautiful loading bar.
Adds emoticons to your app
Intro/Entry/Walkthrough/Starting Screens.
EventBus is a library that simplifies communication between different parts of your application.
ExoPlayer is an application level media player for Android, allow playing audio and video both locally and over the Internet.
Simple Lightweight logger
Easy crash reporting solution.
Fading action bar effect that can be seen in the new Play Music app.
A Complete Fast Android Networking Library that also support HTTP/2.
version checking callback framework with no UI.
A highly customizable, powerful and easy-to-use alerting library for Android.
FlexboxLayout is a library which brings the similar capabilities of CSS Flexible Box Layout Module to Android.
A simple Floating Action Button that shows an anchored Navigation View.
FloatingLabel Allows you to create a blow kind of EditText. *Doesn't have Gradle or Maven Support.*
FloatingView can make the target view floating above the anchor view with cool animation.
Library that helps with describing an app as a collection of moderately independent screens.
An Android library for managing images and the memory they use.
comprehensive features and a "companion" iOS solution.
An image loading and caching library for Android focused on smooth scrolling, Recommended by Google.
Glide Bitmap Pool is a memory management library for reusing the bitmap memory.
Crossplatform offline vector map with MapCSS styling. Offline search and offline navigation are included.
Library to access Google services, such as account syncing, Google+ (sharing, single sign-on), Google Maps, Location APIs, Google Play Games, Cloud Messaging, Android Device Manager, and others.
Allows you to calculate the direction between two locations and display the route on a Google Map using the Google Directions API.
Simplifying Android Permissions.
A curated collection of splendid gradients.
A kotlin dsl to simplify dependencies management
Java 8 Lambdas on Android!
Run your Cucumber tests in your Android instrumentation tests.
Light & fast ORM solution.
Gson is a Java library used for serializing and deserializing Java objects from and into JSON.
Collections, caching, primitives support, concurrency libraries, common annotations, string processing, I/O, and so forth.
A Dns library, user can use custom dns server, dnspod httpdns. Only support A record.
Chart and graph library with support for scaling, scrolling and animations.
offers a hijri (Islamic Calendar) Date Picker designed on Google's Material Design Principals For Pickers.
Distribution, Crash Reports, Feedback and Analytics
Fast, Simple and Easy Networking for Android
Easy, asynchronous, annotation-based SOAP for Android.
Android/iOS video player based on FFmpeg n3.2, with MediaCodec, VideoToolbox support.
Pattern-based user input formatter, parser and validator.
Bug reporting, Crash Reporting, In-app Feedback.
Good networking library for android.
High-performance JSON processor.
Joda-Time library with Android specialization.
An easy open source Android Native Game FrameWork.
A DSL to handle soft keyboard visibility change event.
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.
Catch memory leaks as they occur.
An easy to use and customisable wrapper of the native Android Snackbar which stays visible across multiple activities.
Cross-platform game engine and SDK. Open Source
A ratcheting forward secrecy protocol that works in synchronous and asynchronous messaging environments.
Show logcat inside the device for debug builds
A declarative framework for building efficient UIs on Android.
Logback port to Android which provides a highly configurable logging framework for Android apps.
Simple, pretty and powerful logger for android
An OkHttp interceptor which pretty logs request and response data.
Simple way to take or select photos of your gallery, with other features for manage pictures.
Scale bar for Google Maps Android API
Three Material Dots Indicators styles for View Pagers.
Material Design Calendar compatible with API 8+
Simple take on a material design navigation drawer.
Supporting Floating Labels, Single Line Ellipsis, Max/Min Characters, Helper Text and Error Text with Custom Colors.
Material Intro Screen implementation with easily extensible API.
Material design ProgressBar with consistent appearance.
Material Design Search Bar for Android
Android Library that lets you to select multiple images, video or voice for Android
Custom Dialog to record audio, store it and play it in your phone.
Analytics platform to analyze the users.
Tracking your marketing campaigns across multiple ad networks.
A modern JSON library for Android and Java.
An Android chart and graph library supporting scaling and dragging by gesture.
Android library for multiple snapping of RecyclerView
Recyclerview Adapter library to create composable view holders.
Object graph and persistence framework for Android.
Allows you to easily and quickly create forms in Android with little code.
A NoSQL embedded document store for Android with MongoDb like API.
Run Node.js on Android.
Simple Android pagination library
Simple Android library for permissions request. Consists of only one class.
A simple library for creating animated alerts/dialogs/warnings.
An HTTP+SPDY client for Android and Java applications.
RecyclerView Adapter with multiple modules and hooks to simplify and enhance the use while preventing common mistakes.
Lightweight ORM Java package for JDBC and Android.
Event Bus for Android.
Support for horizontally scrolling ViewPager.
An interactive indicator to navigate between the different pages of a ViewPager.
Simple annotation-based API to handle runtime permissions.
A powerful image downloading and caching library for Android.
a colored command-line ADB wrapper that only shows log entries for a specific application package
A customizable slider widget adhering to material design specs.
A swipe refresh layout is available in the v4 support library.
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.
Android OpenGL ES 2.0/3.0 Engine
Asks the user if (s)he wants to open the Play Store to rate your application.
Reactor is a fast and secure key-value library for Android.
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.
Rebound is a Java library that models spring dynamics.
An efficient TabLayout library implemented with RecyclerView.
An alternative to Android AIDL for Android Remote IPC services using plain java interfaces.
Compile time ORM and SQL query library for Java & Android.
HTTP Web server for mocking API responses in Android Instrumentation tests.
A wrapper to replicate android's SQLiteDatabase with restoring capability.
Retrofit turns your REST API into a Java interface.
Unit test framework to run tests inside the JVM on your workstation, not in the emulator.
Library that makes writing asynchronous network requests easy.
Test automation framework for black-box UI tests.
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.
RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.
Android runtime permissions powered by RxJava.
Reactive extensions for SimpleNoSQL. Manipulate entities using Observables.
View the entire hierarchy in 3d in the phone.
An Adapter that allows a RecyclerView to be split into Sections with headers and/or footers.
Secure Preference Manager for android. It uses various Encryption to protect your application's Shared Preferences.
Detecting gestures in a snap.
Bind Android services and callbacks to fields and methods.
Library to display images in different shapes.
Memory efficient shimmering effect for Android applications.
The ShowcaseView library is designed to highlight and showcase specific parts of apps to the user with a attractive and flat overlay.
Capture photos/videos from device camera or get photos/video from gallery app with no runtime permissions needed.
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.
focused feature set that mimicks the popular iOS library of the same name. Supports Play and Amazon.
Library to create applications with slide-in menus.
Simple library that helps to create awesome sliding android app tutorials.
Simplifies the work with Bluetooth SMART devices (a.k.a. Bluetooth Low Energy in Bluetooth 4.0).
Small custom view with smooth overscroll. You can add header with scale background
Populate Single or multiple Layout RecyclerView without creating an Adapter.
An Android library containing a simple TableView and an advanced SortableTableView providing a lot of customisation possibilities to fit all needs.
Monitoring, Crash Reports, Real time data, Statistic.
Android Library that lights items for tutorials or walk-throughs etc...
A Rest Client for Android.
manage database creation and version management using an application's raw asset files.
Integrate Square payments into your mobile app with Digital wallet and stored card support for quick checkout.
Debug hierarchy and network from chrome.
Comprehensive SDK & Components for real-time chat, powered by Stream.
Insanely easy way to work with Android Databases.
Password EditText that allows to custom toggle button
Implementation of swipe card like StreetView!!
Android library for swipeable gestures to control volume , brightness and seek .
A lightning fast, transactional, file-based FIFO for Android and Java.
An implementation of tap targets from the Material Design guidelines for feature discovery.
Toasts with icons and color.
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!
Multi-language framework for making typical encryption schemes easy to use: data at rest, authenticated data exchange, transport protection, authentication, and so on.
An adaptation of the JSR-310 backport for Android.
A logger with a small, extensible API which provides utility on top of Android's normal Log class.
Easy-to-use animated clock icon
A stopwatch library for android which makes it easy to start, pause, display and maintain multiple stopwatches in an app.
A scope tree based Dependency Injection (DI) library for Java.
command line tool help you manage localization string files.
Android NTP time library. Get the true current time impervious to device clock time changes.
An Android library that makes it easy to use custom fonts in views.
Cross-platform game creation system.
Asynchronous, out of the box loading and caching of images.
A customized video view that will automatically pause video is user is not looking at device screen!
An utilities class to validate text inside TextInputLayout.
Custom Android view with video player, play/stop, loader and placeholder image.
An overlay that gets your user’s voice permission and input as text in a customizable UI.
Augmented Reality library.
Memory safer implementation of android.os.Handler.
Chart library with good motion capabilities.
Customizable Item Setting View for Android.
Integration with Barcode Scanner via Intent.
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The Android Architecture Blueprints project demonstrates strategies to help solve or avoid common android problems.
Generator for icons and other assets.
is a weekly Android podcast hosted by Adam Doud, Joe Hindy, and Jonathan Feist from the Android Authority team.
is a weekly Android podcast hosted by the Android Central team.
The video series by Android Design Team of Google.
It is the technical counterpart of Android Design in Action series.
is a podcast by and for Android developers. Hosted by developers from the Android engineering team, this show covers topics of interest to Android programmers, with in-depth discussions and interviews with engineers on the Android team at Google.
is a video based podcast, where they have bite-sized conversations with people from the Android community.
Very good tutorials for beginners.
Android Sample App using modular, clean, scalable, testable Architecture written in Kotlin following the best practices with Jetpack.
A weekly newsletter on new development and updates of Android universe.
Search Android Libraries, Projects, and Tools.
Cheatsheet about tips and tricks for Android Development.
Gives you wide variety of design resources form a Google Developer Expert in UI/UX.
Newsletter with weekly information about android.
List with blogs about Android.
Become a better Android Engineer. A website dedicated to Android Development covering advanced topics such as RxJava, Android Zygote and much more.
A collection of materials for getting ready for the test.
Your go-to Android Toolbox.
Learn How to use Google Map API for Android from Basic to Advance with complete examples.
A series of articles from Googler Chet Hasae and others, answering most commonly asked question: "What are some of the important rules to keep in mind when developing Android applications?".
Wraps app screenshots in real device artwork.
is the Android developer podcast where Donn Felker and Kaushik Gopal talk about building good software and becoming better Android developers.
Extensive Android tutorials on Retrofit, Picasso, Glide & Gson.
Google Developers Official Training page has list of various useful learning resources for beginner as well seasoned developer.
Video tutorials by Derek Banas.
Example about MVVM (Model View ViewModel) Pattern.
Example about VIPER (View Interactor Presenter Entity Router) Pattern.
Become a complete and happy Android developer.
An open source prototyping software.
Android Tutorials & Courses submitted and voted by the programming community.
Multiple high quality libraries by square.
A Podcast on Kotlin and more.
Large list of android libraries
a podcast about Android Development with Hannes Dorfmann, Artem Zinnatullin and wonderful guests!
Very good tutorials by Lars Vogel.