awesome-android

A curated list of awesome Android packages and resources.

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Content / Emulators
AndY
ARChon
BlueStacks
Genymotion
nox

Content / Libraries / Charts
AChartEngine 759 almost 2 years ago Charting Engine
EazeGraph 1,597 almost 8 years ago Chart and graph library
WilliamChart 5,093 about 1 year ago Chart library with good motion capabilities
HelloCharts 7,434 over 3 years ago Chart and graph library with support for scaling, scrolling and animations
MPAndroidChart 37,558 about 2 months ago An Android chart and graph library supporting scaling and dragging by gesture
ArcChartView 105 almost 4 years ago Draw Creative Statistic Arc Charts
AnyChart 2,298 about 1 year ago Data visualization library, Interactive charts

Content / Libraries / Cloud Services
CloudRail Unified API Library for: Cloud Storage, Social Profiles, Payment, Email, SMS & POIs

Content / Libraries / Data binding
Anvil 1,446 over 3 years ago A small library to create reactive UI components, inspired by React. Provides data binding and event listener binding, fits well for MVVM
Data Binding Library Official Android Data Binding Library to write declarative layouts and minimize the glue code necessary to bind application logic and layouts

Content / Libraries / Dependency Injection
Dagger 2 17,424 4 days ago A fast dependency injector for Android and Java
Butter Knife View "injection" library for Android
ActivityStarter 431 over 5 years ago Android Library that provide simpler way to start the Activities with multiple arguments
AndroidAnnotations 11,062 over 2 years ago Java annotations with dependency injection at compile time
Toothpick 1,124 over 2 years ago A scope tree based Dependency Injection (DI) library for Java

Content / Libraries / Android Services
Remoter 84 2 months ago An alternative to Android AIDL for Android Remote IPC services using plain java interfaces
Service Connector 16 about 5 years ago Bind Android services and callbacks to fields and methods

Content / Libraries / Game Development
Libgdx Cross-platform game engine and SDK
Vuforia Augmented Reality library
Unity Cross-platform game creation system
Rajawali 2,346 over 1 year ago Android OpenGL ES 2.0/3.0 Engine
Cocos2d-x Cross-platform 2d game framework
JustWeEngine 772 about 4 years ago An easy open source Android Native Game FrameWork

Content / Libraries / Security
libsignal-protocol-java 1,825 almost 3 years ago A ratcheting forward secrecy protocol that works in synchronous and asynchronous messaging environments
Themis 1,859 24 days ago Multi-language framework for making typical encryption schemes easy to use: data at rest, authenticated data exchange, transport protection, authentication, and so on

Content / Libraries / GUI
Pull to refresh A swipe refresh layout is available in the v4 support library
Cardslib 4,663 almost 3 years ago Android Library to build a UI Card
AndroidStaggeredGrid 4,757 over 1 year ago Grid view which supports multiple columns with rows of varying sizes
Flow 2,786 over 1 year ago Library that helps with describing an app as a collection of moderately independent screens
SortableTableView 1,054 over 3 years ago An Android library containing a simple TableView and an advanced SortableTableView providing a lot of customisation possibilities to fit all needs
MaterialProgressBar 2,213 over 4 years ago Material design ProgressBar with consistent appearance
AndroidFillableLoaders 1,998 about 2 years ago Fillable progress view working with SVG paths. Nice option too for creating interesting app logos
NexusDialog 183 over 6 years ago Allows you to easily and quickly create forms in Android with little code
Snap RecyclerView Utils 72 almost 8 years ago Populate Single or multiple Layout RecyclerView without creating an Adapter
MultiSnapRecyclerView 2,506 over 3 years ago Android library for multiple snapping of RecyclerView
SwipeableCard 844 over 7 years ago Implementation of swipe card like StreetView!!
ElasticProgressBar 314 over 7 years ago Beautiful loading bar
EntryScreenManager 41 over 8 years ago Intro/Entry/Walkthrough/Starting Screens
EasyIntro The flexible, easy to use, all in one app intro library for your Android project
Material-Calendar-View 370 almost 6 years ago Material Design Calendar compatible with API 8+
CrunchyCalendar 647 8 months ago A material calendar widget with infinite scrolling, date range selection and color customization
SmoothOverscrollableScrollView 29 about 5 years ago Small custom view with smooth overscroll. You can add header with scale background
SectionedRecyclerViewAdapter 1,678 over 2 years ago An Adapter that allows a RecyclerView to be split into Sections with headers and/or footers
DragListView 693 about 2 months ago Drag and drop to reorder items in a list, grid or board
Animated Expanding ListView 130 about 8 years ago Animated Expanding ListView provides a fancy animation on expanding or collapsing the content of a listview item
TastyToast 2,039 about 5 years ago Toasts with icons and color
DotLoader 138 over 7 years ago A customizable loading animation with Dots
PodSlider 135 about 8 years ago A customizable slider widget adhering to material design specs
TapTargetView 5,371 about 2 months ago An implementation of tap targets from the Material Design guidelines for feature discovery
ShowCaseView 588 8 months ago The ShowcaseView library is designed to highlight and showcase specific parts of apps to the user with a attractive and flat overlay
MaterialIntroScreen 2,712 about 4 years ago Material Intro Screen implementation with easily extensible API
FloatingView 1,816 over 5 years ago FloatingView can make the target view floating above the anchor view with cool animation
Timecon 266 over 6 years ago Easy-to-use animated clock icon
Audiogram 492 about 4 years ago Lightweight audiowave progressbar
Bubbles for Android 1,482 over 3 years ago Facebook like chat bubble library
Litho (By Facebook) 7,693 3 days ago A declarative framework for building efficient UIs on Android
MultiViewAdapter 818 almost 4 years ago Recyclerview Adapter library to create composable view holders
LGSnackbar 47 about 7 years ago An easy to use and customisable wrapper of the native Android Snackbar which stays visible across multiple activities
ShimmerLayout 2,517 over 4 years ago Memory efficient shimmering effect for Android applications
CircleProgressBar 113 almost 5 years ago A simple library for creating circular progressbars for Android
Easy-Signature-Android 24 almost 7 years ago An simple ui library that provides a plugable signature view
Flashbar 1,734 almost 3 years ago A highly customizable, powerful and easy-to-use alerting library for Android
YuanaItemSettingView 16 almost 4 years ago Customizable Item Setting View for Android
Gradients 51 almost 4 years ago A curated collection of splendid gradients
OneAdapter 469 6 months ago RecyclerView Adapter with multiple modules and hooks to simplify and enhance the use while preventing common mistakes
NoPaginate 182 over 2 years ago Simple Android pagination library
ActionBarSherlock ActionBar for older Android versions
FadingActionBar 2,869 over 6 years ago Fading action bar effect that can be seen in the new Play Music app
SlidingMenu 11,075 about 3 years ago Library to create applications with slide-in menus
SlidingTutorial 2,483 almost 6 years ago Simple library that helps to create awesome sliding android app tutorials
PagerSlidingTabStrip 139 almost 6 years ago An interactive indicator to navigate between the different pages of a ViewPager
Page View indicator 10,134 almost 7 years ago Support for horizontally scrolling ViewPager
RecyclerTabLayout 1,361 about 5 years ago An efficient TabLayout library implemented with RecyclerView
MaterialDrawer 11,674 2 months ago Simple take on a material design navigation drawer
Debug-Artist 45 over 5 years ago Debug menu to enable leakcanary, scalpel and others easy
Floating-Navigation-View 1,293 about 2 years ago A simple Floating Action Button that shows an anchored Navigation View
Rebound 5,432 over 5 years ago Rebound is a Java library that models spring dynamics
Android View Animations 12,420 about 3 years ago Cute view animation collection
Android-Transition 613 over 6 years ago Allows the easy creation of view transitions that react to user inputs
Android-View-Actions 137 almost 4 years ago Makes creating complex animations for views easy
Swipper 106 over 7 years ago Android library for swipeable gestures to control volume , brightness and seek
Spotlight 3,615 almost 2 years ago Android Library that lights items for tutorials or walk-throughs etc
Crescento 1,277 about 6 years ago Explore new style in material design by adding curve below image view
android-crop 4,538 over 3 years ago Library project for cropping images
CircularImageView 1,178 about 7 years ago Custom view for circular images while maintaining the best draw performance
Android-Image-Filter 656 over 8 years ago Library project for applying image filters easily
Compressor 7,059 11 months ago Compressor is a lightweight and powerful android image compression library
ShapeImageView 2,664 about 5 years ago Library to display images in different shapes
FloatingLabel 292 over 7 years ago FloatingLabel Allows you to create a blow kind of EditText
MaterialEditText 6,106 about 5 years ago Supporting Floating Labels, Single Line Ellipsis, Max/Min Characters, Helper Text and Error Text with Custom Colors
EmojiCompat 706 about 5 years ago Adds emoticons to your app
MaterialSearchBar 2,028 about 2 years ago Material Design Search Bar for Android
InputMask 1,214 10 months ago Pattern-based user input formatter, parser and validator
SweetPassword 20 over 6 years ago Password EditText that allows to custom toggle button
VoiceOverlay 254 over 2 years ago An overlay that gets your user’s voice permission and input as text in a customizable UI
Material Dots Indicators 3,460 7 days ago Three Material Dots Indicators styles for View Pagers
Picasso 18,709 4 days ago A powerful image downloading and caching library for Android
Universal Image Loader 16,783 about 2 months ago Asynchronous, out of the box loading and caching of images
Glide 34,610 11 days ago An image loading and caching library for Android focused on smooth scrolling, Recommended by Google
Fresco 17,072 4 days ago An Android library for managing images and the memory they use
Glide Bitmap Pool 589 about 2 months ago Glide Bitmap Pool is a memory management library for reusing the bitmap memory
Coil 10,697 3 days ago Image loading for Android backed by Kotlin Coroutines
MediaPicker 268 over 4 years ago Android Library that lets you to select multiple images, video or voice for Android
Android Image Picker 1,107 2 months ago A library that makes images and videos selection from gallery feels easy. It also support GIF and simple camera action
ijkplayer 32,434 about 2 months ago Android/iOS video player based on FFmpeg n3.2, with MediaCodec, VideoToolbox support
Exoplayer 21,703 about 2 months ago 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
VideoPlayView 94 almost 7 years ago Custom Android view with video player, play/stop, loader and placeholder image
MagicalCamera 338 over 5 years ago Simple way to take or select photos of your gallery, with other features for manage pictures
Camera 130 about 6 years ago Use Android camera to take pictures and videos, based on camera2 api
Convalida 204 almost 5 years ago A simple and annotation-based way to validate your input fields

Content / Libraries / JSON
Gson 23,294 4 days ago Gson is a Java library used for serializing and deserializing Java objects from and into JSON
Jackson JSON Processor 9,057 3 months ago High-performance JSON processor
Moshi 9,731 12 days ago A modern JSON library for Android and Java

Content / Libraries / Crash monitoring
Fabric Crashlytics Easy crash reporting solution
HockeyApp Distribution, Crash Reports, Feedback and Analytics
Splunk MINT Monitoring, Crash Reports, Real time data, Statistic
Bugsnag Cross platform error monitoring. Free tier. Support for SDK & NDK. Error reports include data on device, release, user, and allows arbitrary data
Catcho 35 over 7 years ago No Force Close any more
Apteligent Cross platform crash reporting/analytics solution. Supports NDK log
Instabug Bug reporting, Crash Reporting, In-app Feedback

Content / Libraries / Networking
Ion 6,293 8 months ago Good networking library for android
OkHttp 45,758 6 days ago An HTTP+SPDY client for Android and Java applications
RoboSpice 2,945 over 6 years ago Library that makes writing asynchronous network requests easy
IceNet 62 almost 10 years ago Fast, Simple and Easy Networking for Android
Android Volley Official Android HTTP library that makes networking for easier and faster
IceSoap 75 over 8 years ago Easy, asynchronous, annotation-based SOAP for Android
node-android 621 about 1 year ago Run Node.js on Android
HappyDns 309 5 months ago A Dns library, user can use custom dns server, dnspod httpdns. Only support A record
RESTMock 757 about 2 years ago HTTP Web server for mocking API responses in Android Instrumentation tests
Fast-Android-Networking 5,686 about 2 months ago A Complete Fast Android Networking Library that also support HTTP/2

Content / Libraries / Logger
logger 13,816 about 2 years ago Simple, pretty and powerful logger for android
timber 10,421 about 2 months ago A logger with a small, extensible API which provides utility on top of Android's normal Log class
LoggingInterceptor 1,323 8 months ago An OkHttp interceptor which pretty logs request and response data
Bugfender 39 almost 2 years ago Upload your logs and check them online, specially made for mobile
EzyLogger 7 about 4 years ago Simple Lightweight logger
Logback Android 1,198 4 days ago Logback port to Android which provides a highly configurable logging framework for Android apps

Content / Libraries / Notifications
android-remote-notifications 101 over 6 years ago Pulls notifications from a remote JSON file and shows them in your app
Android HeartBeat Fixer 57 over 8 years ago Way to set heartbeat interval and users receive PushNotifications from GCM

Content / Libraries / Database
Cupboard Access the sqlite easily via direct database access or through the ContentProvider framework
DbInspector 952 5 months ago Provides a simple way to view the contents of the in-app database for debugging purposes
SQLite Asset Helper 2,144 about 3 years ago manage database creation and version management using an application's raw asset files
Realm 11,451 21 days ago The alternative to SQLite and ORMs: Simple, modern and fast! Object oriented API and multi platform support
Realm Asset Helper 29 over 4 years ago Copies a realm database from the apk assets folder. Efficiently handles versioning of read-only realm databases
RestorableSQLiteDatabase 21 over 8 years ago A wrapper to replicate android's SQLiteDatabase with restoring capability
Nitrite Database 830 4 days ago A NoSQL embedded document store for Android with MongoDb like API
requery 3,137 over 2 years ago Compile time ORM and SQL query library for Java & Android
GreenDAO Light & fast ORM solution
ORMLite Lightweight ORM Java package for JDBC and Android
ActiveAndroid Active record style ORM
Sugar ORM Insanely easy way to work with Android Databases
DBFlow 4,873 over 2 years ago Fast and powerful ORM with compile-time annotation processing
NexusData 72 over 6 years ago Object graph and persistence framework for Android
SimpleNoSQL 387 almost 4 years ago 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
RxSimpleNoSQL 37 over 6 years ago Reactive extensions for SimpleNoSQL. Manipulate entities using Observables

Content / Libraries / REST
Retrofit Retrofit turns your REST API into a Java interface
Spring for Android - Rest Template 707 over 2 years ago A Rest Client for Android

Content / Libraries / Testing
Robotium 2,858 about 3 years ago Test automation framework for black-box UI tests
Roboletric Unit test framework to run tests inside the JVM on your workstation, not in the emulator
AssertJ Android 1,577 over 6 years ago AssertJ assertions geared towards Android
Green Coffee 231 over 3 years ago Run your Cucumber tests in your Android instrumentation tests

Content / Libraries / Tracking
MobileAppTracking Tracking your marketing campaigns across multiple ad networks
Mixpanel Analytics platform to analyze the users
Countly Open source mobile & web analytics, push notifications and crash reporting platform, based on Node.js, MongoDB and Linux
CleverTap Analytics platform and user-engagement platform with 1 million free events

Content / Libraries / Maps
Google-Directions-Android 980 almost 3 years ago Allows you to calculate the direction between two locations and display the route on a Google Map using the Google Directions API
Android Maps Extensions 405 over 3 years ago Extending capabilities of Google Maps Android API v2, adding marker clustering among other things
MapScaleView 118 about 4 years ago Scale bar for Google Maps Android API
GLMap Crossplatform offline vector map with MapCSS styling. Offline search and offline navigation are included

Content / Libraries / Utility
Conceal SharedPreferences 95 about 4 years ago Secured Preferences using Facebook Secure Encryption called Conceal
EventBus EventBus is a library that simplifies communication between different parts of your application
Otto 5,164 almost 6 years ago Event Bus for Android
Weak handler 1,546 over 2 years ago Memory safer implementation of android.os.Handler
Byte Buddy Runtime code generation library with support for Android
Secure Preference Manager 71 almost 8 years ago Secure Preference Manager for android. It uses various Encryption to protect your application's Shared Preferences
LeakCanary 29,351 about 1 month ago Catch memory leaks as they occur
Drekkar 23 over 8 years ago An Android event bus for WebView and JS
Androl4b 1,097 over 1 year ago A vm for assessing android applications
DroidMVP 225 over 6 years ago Android library to help you incorporate MVP along with Passive View and Presentation Model patterns into your app
EasyDeviceInfo 1,765 3 months ago Get device information in a super easy way
Shutter-Android 56 about 7 years ago Capture photos/videos from device camera or get photos/video from gallery app with no runtime permissions needed
Validator 127 almost 3 years ago An utilities class to validate text inside TextInputLayout
Keyboard Visibility Event 18 about 3 years ago A DSL to handle soft keyboard visibility change event
TimeIt 36 almost 5 years ago A stopwatch library for android which makes it easy to start, pause, display and maintain multiple stopwatches in an app
Reactor 38 over 2 years ago Reactor is a fast and secure key-value library for Android

Content / Libraries / Debugging Tools
Linx 782 almost 3 years ago Show logcat inside the device for debug builds
Scalpel 2,764 over 4 years ago View the entire hierarchy in 3d in the phone
Stetho 12,670 2 months ago Debug hierarchy and network from chrome
Android Debug Database 8,401 about 2 months ago Android Debug Database is a powerful library for debugging databases and shared preferences in Android applications
Android Debug Bridge - ADB 11,306 2 months ago a command-line tool to assist in debugging Android-powered devices
ADB Enhanced 1,209 about 2 months ago a command-line wrapper around ADB for developers, so that, developers don't have to remember esoteric version-dependent commands
Pidcat 4,818 5 months ago a colored command-line ADB wrapper that only shows log entries for a specific application package
AppSpector Remote Android and iOS debugging and data collection service. You can debug networking, logs, SQLite and mock device's geo location

Content / Libraries / Wireless
SmartGattLib 279 11 months ago Simplifies the work with Bluetooth SMART devices (a.k.a. Bluetooth Low Energy in Bluetooth 4.0)

Content / Libraries / Chat & Messaging
Applozic Android Chat SDK Android Chat and Messaging SDK for adding real time chat and in-app messaging into your android application
Qiscus SDK 201 17 days ago 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 Live Chat SDK 75 4 days ago 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
CometChat Voice, Video and Text Chat SDK with UI 3 almost 5 years ago 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
Build a one-on-one Android chat app using Kotlin 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
Stream Chat Comprehensive SDK & Components for real-time chat, powered by
Add Push Notifications to Your Android Chat App Using Kotlin Add push notifications in your Android chat apps in Kotlin with the help of CometChat Pro and Firebase Cloud Messaging (FCM)
MediaRecorderDialog 72 almost 8 years ago Custom Dialog to record audio, store it and play it in your phone
HijriDatePicker 142 almost 2 years ago offers a hijri (Islamic Calendar) Date Picker designed on Google's Material Design Principals For Pickers
Noty 154 over 5 years ago A simple library for creating animated alerts/dialogs/warnings

Content / Libraries / Version Checking
AppUpdater 1,980 3 months ago comprehensive and feature rich library, including support for checks at Amazon and FDroid
Gandalf 282 over 3 years ago comprehensive features and a "companion" iOS solution
Siren 134 almost 4 years ago focused feature set that mimicks the popular iOS library of the same name. Supports Play and Amazon
Fit 59 about 6 years ago version checking callback framework with no UI

Content / Libraries / Date & Time
ThreeTen Android Backport 3,544 18 days ago An adaptation of the JSR-310 backport for Android
Joda-Time Android 2,623 17 days ago Joda-Time library with Android specialization
True Time 1,414 over 1 year ago Android NTP time library. Get the true current time impervious to device clock time changes

Content / Libraries / Runtime Permissions
Permission Dispatcher 11,224 11 months ago Simple annotation-based API to handle runtime permissions
RxPermissions 10,480 over 2 years ago Android runtime permissions powered by RxJava
NoPermission 103 over 2 years ago Simple Android library for permissions request. Consists of only one class
Ask-Permission 76 almost 6 years ago Simple RunTime permission manager
Gota 70 over 6 years ago Simplifying Android Permissions
EasyPermissions 9,863 about 1 year ago EasyPermissions is a wrapper library to simplify basic system permissions logic when targeting Android M or higher

Content / Libraries / Payments
Square In-App Payments for Android Integrate Square payments into your mobile app with Digital wallet and stored card support for quick checkout

Content / Libraries / Other
Android Support library The Android Support Library package is a set of code libraries that provide backward-compatible versions of Android framework API
Google Play Services 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
Tape 2,466 over 1 year ago A lightning fast, transactional, file-based FIFO for Android and Java
Guava: Google Core Libraries for Java 50,070 4 days ago Collections, caching, primitives support, concurrency libraries, common annotations, string processing, I/O, and so forth
Android Scripting 2,431 6 months ago Allows to run scripting languages on Android
Android Priority Job Queue 3,400 almost 2 years ago Implementation of a Job Queue to easily schedule jobs (tasks) that run in the background, improving UX and application stability
RateMeMaybe 98 over 3 years ago Asks the user if (s)he wants to open the Play Store to rate your application
Easy Rating Dialog 113 about 6 years ago Lib provides a simple way to display an alert dialog for rating app
ZXing Android-Integration 32,698 5 days ago Integration with Barcode Scanner via Intent
Gradle Retrolambda Plugin 5,300 about 1 year ago Java 8 Lambdas on Android!
RxJava 47,852 9 days ago RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM
RxAndroid 19,887 about 2 months ago Adds minimum RxJava bindings for easy writing of reactive Android java code
RxBinding 9,683 almost 3 years ago RxBinding – RxJava binding APIs for Android UI widgets from the platform and support libraries
Caffeine 414 over 7 years ago A collection of utility classes that help make Android development faster
AboutLibraries 3,635 about 1 month ago Automatically generates an About this app section, with a list of used libraries
AudioPlayerView 86 over 6 years ago A view that loads audio from an url and have basic playback tools
andle 57 almost 3 years ago command line tool help you sync dependencies, sdk or build tool version
Typography 43 over 8 years ago An Android library that makes it easy to use custom fonts in views
Calligraphy 8,588 6 months ago Custom fonts in Android an OK way
transai 58 over 6 years ago command line tool help you manage localization string files
Android-Link-Preview 420 over 4 years ago It makes a preview from an url, grabbing all the information such as title, relevant texts and images
Sensey 2,669 3 months ago Detecting gestures in a snap
UserAwareVideoView 51 over 7 years ago A customized video view that will automatically pause video is user is not looking at device screen!
Flexbox Layout 18,246 6 months ago FlexboxLayout is a library which brings the similar capabilities of CSS Flexible Box Layout Module to Android
Agile Boiler Plate 47 almost 8 years ago The boiler plate is based on MVP architecture and it is fully based on Dependency Injection design pattern using Dagger2
Gradle buildSrcVersions 1,649 5 months ago A kotlin dsl to simplify dependencies management
Teller 16 over 2 years ago 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!

Content / Resources
Programming Community Curated Resources for Learning Android Development Android Tutorials & Courses submitted and voted by the programming community
Vogella Tutorials Very good tutorials by Lars Vogel
Android Design in Action Video series The video series by Android Design Team of Google
Android DevBytes Video Series It is the technical counterpart of Android Design in Action series
Developing for Android 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?"
Android Hive Tutorials Very good tutorials for beginners
Android Weekly Newsletter with weekly information about android
Android Asset Studio Generator for icons and other assets
Android Action Bar Style Generator
Device Art Generator Wraps app screenshots in real device artwork
Android UI design resources Gives you wide variety of design resources form a Google Developer Expert in UI/UX
Pencil Project An open source prototyping software
How to Make Android Apps Video tutorials by Derek Banas
android-blogs 500 about 3 years ago List with blogs about Android
Future Studio Extensive Android tutorials on Retrofit, Picasso, Glide & Gson
Android Tips & Tricks 4,722 about 1 year ago Cheatsheet about tips and tricks for Android Development
Associate Android Developer Certification Materials 1,051 over 1 year ago A collection of materials for getting ready for the test
Google Developers Training Google Developers Official Training page has list of various useful learning resources for beginner as well seasoned developer
Mindorks Become a complete and happy Android developer
AndroidVille Become a better Android Engineer. A website dedicated to Android Development covering advanced topics such as RxJava, Android Zygote and much more
Android Stack Weekly A weekly newsletter on new development and updates of Android universe

Content / Resources / Code examples
Android Architecture Blueprints 44,350 12 days ago The Android Architecture Blueprints project demonstrates strategies to help solve or avoid common android problems
Kotlin MVVM example 532 over 1 year ago Example about MVVM (Model View ViewModel) Pattern
Kotlin VIPER example Example about VIPER (View Interactor Presenter Entity Router) Pattern
Complete-Google-Map-API-Tutorial 125 over 3 years ago Learn How to use Google Map API for Android from Basic to Advance with complete examples
Android Modular Architecture 2,412 about 3 years ago Android Sample App using modular, clean, scalable, testable Architecture written in Kotlin following the best practices with Jetpack

Content / Resources / Podcasts
Fragmented is the Android developer podcast where Donn Felker and Kaushik Gopal talk about building good software and becoming better Android developers
Android Developers Backstage 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
Android Dialogs is a video based podcast, where they have bite-sized conversations with people from the Android community
The Context 624 almost 5 years ago a podcast about Android Development with Hannes Dorfmann, Artem Zinnatullin and wonderful guests!
Talking Kotlin A Podcast on Kotlin and more
Android Authority is a weekly Android podcast hosted by Adam Doud, Joe Hindy, and Jonathan Feist from the Android Authority team
Android Central is a weekly Android podcast hosted by the Android Central team

Content / Resources / More lists of libraries
The Android Arsenal Large list of android libraries
Square libraries Multiple high quality libraries by square
Awesome Android @LibHunt Your go-to Android Toolbox
Android Store Search Android Libraries, Projects, and Tools

Content / Development Alternatives / C#
Xamarin Framework to create native iOS, Android, Mac and Windows apps in C#

Content / Development Alternatives / HTML, CSS and Javascript
PhoneGap Open source framework by Adobe to create cross platform mobile apps using HTML, CSS, and JavaScript
Titanium Open-source framework to create 'native' cross platform apps using JavaScript
NativeScript An open-source framework to build native iOS and Android apps with JavaScript from a single code base
React Native 118,482 3 days ago A framework for building native apps with React by Facebook
Ionic Framework A framework to build hybrid apps with mobile-optimized HTML, CSS and JS with AngularJS
Apache Cordova 3,651 18 days ago Cordova based applications are, at the core, applications written with web technology: HTML, CSS and JavaScript
Capacitor 11,984 4 days ago Build cross-platform Native Progressive Web Apps for iOS, Android, and the web. Very promising Cordova alternative

Content / Development Alternatives / Lua
Corona SDK Framework to create native iOS and Android Apps (especially Games)

Content / Development Alternatives / Scala
Scaloid 2,090 4 months ago Library for less painful Android development with Scala
Macroid 527 about 7 years ago A modular functional UI language for Android

Content / Development Alternatives / Groovy
Groovy on Android Introduction to Groovy on Android
Groovy Language Support for Android 853 over 4 years ago Gradle Plugin for Compiling Groovy for Android
SwissKnife 255 almost 9 years ago A multi-purpose Groovy library containing view injection and threading for Android using annotations

Content / Development Alternatives / Kotlin
Anko 15,891 almost 5 years ago DSL for Android written in Kotlin by JetBrains
Kotterknife 2,226 about 5 years ago Android view injection written in Kotlin based on ButterKnife
Android Kotlin Samples 311 over 5 years ago Some basic Android code samples written in Kotlin
Kotlin coding puzzles 955 10 days ago Set of programming challenges thats helps to improve whiteboard coding and problem-solving skills
KAndroid 896 2 months ago Lightweight library providing useful extensions to eliminate boilerplate code in Android SDK
RxKotlin/Pocket 32 over 8 years ago This app help user to save links easily, and can export to Evernote as weekly
Android Clean Architecture - Kotlin 330 over 5 years ago A base project using the Uncle Bob's clean architecture with Kotlin language and the latest Android technologies
Koin Lightweight dependency injection framework for Kotlin

Content / Development Alternatives / Flutter
Flutter Google's mobile app SDK for high-quality native interfaces for Android and iOS in very quick time

Performance
awesome-android-performance 2,847 over 5 years ago A list of awesome Android tutorials, videos and tools for performance optimization
Booster 4,873 3 months ago Booster is an optimization toolkit for Android applications

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