Awesome

Awesome Kotlin

A curated list of awesome Kotlin frameworks, libraries, documents and other resources.

Website
Libraries
Applications
Samples
Tutorials
Articles
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Books
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Website

Libraries

leakcanary - A memory leak detection library for Android.
p3c - Alibaba Java Coding Guidelines pmd implements and IDE plugin
material-dialogs - 😍 A beautiful, fluid, and extensible dialogs API for Kotlin & Android.
flexbox-layout - Flexbox for Android
anko - Pleasant Android application development
MaterialDrawer - The flexible, easy to use, all in one drawer library for your Android project. Now brand new with material 2 design.
recyclerview-animators - An Android Animation library which easily add itemanimator to RecyclerView items.
AppIntro - Make a cool intro for your Android app.
RxBinding - RxJava binding APIs for Android's UI widgets.
kotlinx.coroutines - Library support for Kotlin coroutines
timber - A logger with a small, extensible API which provides utility on top of Android's normal Log class.
ktor - Framework for quickly creating connected applications in Kotlin with minimal effort
FlowMVI - A Kotlin Multiplatform architectural framework based on coroutines with an extensive feature set, powerful plugin system and a rich DSL.
okio - A modern I/O library for Android, Kotlin, and Java.
TranslationPlugin - :electric_plug:Translation plugin for IntelliJ based IDEs/Android Studio
kotlin-native - Kotlin/Native infrastructure
RxKotlin - RxJava bindings for Kotlin
koin - Koin - a pragmatic lightweight dependency injection framework for Kotlin
Compressor - An android image compression library.
acra - Application Crash Reports for Android
coil - Image loading for Android backed by Kotlin Coroutines.
ideavim - Vim emulation plugin for IDEs based on the IntelliJ Platform
topeka - A fun to play quiz that showcases material design on Android
MultiType - Easier and more flexible to create multiple types for Android RecyclerView.
Alerter - An Android Alerting Library
Exposed - Kotlin SQL Framework
DBFlow - A blazing fast, powerful, and very simple ORM android database library that writes database code for you.
Android-Iconics - Android-Iconics - Use any icon font, or vector (.svg) as drawable in your application.
williamchart - Android Library to rapidly develop attractive and insightful charts in android applications.
javalin - A simple and modern Java and Kotlin web framework
Design-Patterns-In-Kotlin - Design Patterns implemented in Kotlin
muzei - Muzei Live Wallpaper for Android
ktlint - An anti-bikeshedding Kotlin linter with built-in formatter
RxDownload - A multi-threaded download tool written with RxJava and Kotlin
mavericks - Mavericks: Android on Autopilot
fuel - The easiest HTTP networking library for Kotlin/Android
sqldelight - SQLDelight - Generates typesafe Kotlin APIs from SQL
Context-Menu.Android - You can easily add awesome animated context menu to your app.
mockk - mocking library for Kotlin
Fotoapparat - Making Camera for Android more friendly. 📸
ShimmerRecyclerView - null
corda - Corda is an open source blockchain project, designed for business from the start. Only Corda allows you to build interoperable blockchain networks that transact in strict privacy. Corda's smart contract technology allows businesses to transact directly, with value.
intellij-rainbow-brackets - 🌈Rainbow Brackets / Rainbow Parentheses for IntelliJ based IDEs/Android Studio
gradle-play-publisher - GPP is Android's unofficial release automation Gradle Plugin. It can do anything from building, uploading, and then promoting your App Bundle or APK to publishing app listings and other metadata.
wire - gRPC and protocol buffers for Android, Kotlin, and Java.
android-clean-architecture-boilerplate - An android boilerplate project using clean architecture
detekt - Static code analysis for Kotlin
intellij-rust - Rust plugin for the IntelliJ Platform
Timeline-View - Android Timeline View is used to display views like Tracking of shipment/order, steppers etc.
kotlin-dsl-samples - Samples builds using the Gradle Kotlin DSL
tornadofx - Lightweight JavaFX Framework for Kotlin
FastAdapter - The bullet proof, fast and easy to use adapter library, which minimizes developing time to a fraction...
booster - 🚀Optimizer for mobile applications
qksms - The most beautiful SMS messenger for Android
compose-jb - Jetpack Compose for Desktop, a modern UI framework for Kotlin that makes building performant and beautiful user interfaces easy and enjoyable.
Spotlight - Android Library that lights items for tutorials or walk-throughs etc...
VancedManager - Vanced Installer
dexcount-gradle-plugin - A Gradle plugin to report the number of method references in your APK on every build.
kotlinx.serialization - Kotlin multiplatform / multi-format serialization
kotest - Powerful, elegant and flexible test framework for Kotlin
TourGuide - TourGuide is an Android library that aims to provide an easy way to add pointers with animations over a desired Android View
kotlinpoet - A Kotlin API for generating .kt source files.
AboutLibraries - AboutLibraries is a library to offer some information of libraries.
kotlin-koans - Kotlin workshop
mockito-kotlin - Using Mockito with Kotlin
Kodein-DI - Painless Kotlin Dependency Injection
Scarlet - A Retrofit inspired WebSocket client for Kotlin, Java, and Android
android-upload-service - Easily upload files (Multipart/Binary/FTP out of the box) in the background with progress notification. Support for persistent upload requests, customizations and custom plugins.
ViewPagerTransforms - Library containing common animations needed for transforming ViewPager scrolling for Android v13+.
CalendarView - A highly customizable calendar library for Android, powered by RecyclerView.
TouchImageView - Adds touch functionality to Android ImageView.
Simple-Calendar - A simple calendar with events, customizable widgets and no ads.
Android-FilePicker - Photopicker and document picker for android
Android-SwitchIcon - Google launcher-style implementation of switch (enable/disable) icon
kotterknife - View "injection" library for Android.
Cicerone - 🚦 Cicerone is a lightweight library that makes the navigation in an Android app easy.
android-youtube-player - YouTube Player library for Android and Chromecast, stable and customizable.
RichPath - 💪 Rich Android Path. 🤡 Draw as you want. 🎉 Animate much as you can.
SuperSLiM - A layout manager for the RecyclerView with interchangeable linear, grid, and staggered displays of views, all with configurable section headers including the sticky variety as specified in the material design docs.
MultiSnapRecyclerView - Android library for multiple snapping of RecyclerView
search - Material Design Search component for Android, SearchView
Store - Kotlin Library for Async Data Loading and Caching
dotsindicator - Three material Dots Indicators for view pagers in Android !
Colorful - Android runtime theme library
Unciv - Open-source Android/Desktop remake of Civ V
spek - A specification framework for Kotlin
JsonToKotlinClass - 🚀Plugin for Android Studio And IntelliJ Idea to generate Kotlin data class code from JSON text ( Json to Kotlin )
Konfetti - Celebrate more with this lightweight confetti particle system 🎊
transitioner - A library for dynamic view-to-view transitions
XiaomiADBFastbootTools - A simple tool for managing Xiaomi devices on desktop using ADB and Fastboot
adb-idea - A plugin for Android Studio and Intellij IDEA that speeds up your day to day android development.
retrofit2-kotlin-coroutines-adapter - A Retrofit 2 adapter for Kotlin coroutine's Deferred type.
dokka - Documentation Engine for Kotlin
VDM - GUI for command-line video downloader (youtube-dl annie)
InboxRecyclerView - Build expandable descendant navigation, inspired by Google Inbox
CircularImageView - Create circular ImageView in Android in the simplest way possible
UserLAnd - Main UserLAnd Repository
drag-select-recyclerview - 👇 Easy Google Photos style multi-selection for RecyclerViews, powered by Kotlin and AndroidX.
ComposeCookBook - A Collection on all Jetpack compose UI elements, Layouts, Widgets and Demo screens to see it's potential
StreetComplete - Easy to use OpenStreetMap editor for Android
open-event-attendee-android - Open Event Attendee Android General App https://github.com/fossasia/open-event-android/blob/apk/open-event-dev-app-playStore-debug.apk
Balloon - :balloon: A lightweight popup like tooltips, fully customizable with an arrow and animations.
WechatMagician - WechatMagician is a Xposed module written in Kotlin, that allows you to completely control your Wechat.
Lightning-Browser - A lightweight Android browser with modern navigation
play-billing-samples - Samples for Google Play In-app Billing
android-modular-architecture - 📚 Sample Android Components Architecture on a modular word focused on the scalability, testability and maintainability written in Kotlin, following best practices using Jetpack.
android-components - A collection of Android libraries to build browsers or browser-like applications.
Flashbar - ⚡️A highly customizable, powerful and easy-to-use alerting library for Android.
http4k - The Functional toolkit for Kotlin HTTP applications. http4k provides a simple and uniform way to serve, consume, and test HTTP services.
AwesomeQRCode - An awesome QR code generator for Android.
SearchFilter - Implementing Search Filter Animation in Kotlin for Quora Meets LinkedIn, Our App Design Concept
chucker - 🔎 An HTTP inspector for Android & OkHTTP (like Charles but on device) - More Chucker than Chuck
Splitties - A collection of hand-crafted extensions for your Kotlin projects.
klaxon - A JSON parser for Kotlin
paris - Define and apply styles to Android views programmatically
create-android-kotlin-app - Create kotlin android project with one line of command.
press - Cross-platform markdown editor written in Kotlin Multiplatform (work in progress)
LoadingButtonAndroid - A button to substitute the ProgressDialog
StfalconImageViewer - A simple and customizable Android full-screen image viewer with shared image transition support, "pinch to zoom" and "swipe to dismiss" gestures
EasyImage - Library for picking pictures from gallery or camera
FancyShowCaseView - An easy-to-use customisable show case view with circular reveal animation.
badge-magic-android - Badge Magic with LEDs - Android App https://play.google.com/apps/testing/org.fossasia.badgemagic
orbit - Orbit - Virtual actor framework for building distributed systems
Android-TextView-LinkBuilder - Insanely easy way to define clickable links within a TextView.
jclasslib - jclasslib bytecode viewer is a tool that visualizes all aspects of compiled Java class files and the contained bytecode.
kscript - Scripting enhancements for Kotlin
KeyboardVisibilityEvent - Android Library to handle software keyboard visibility change event.
tasks - Bringing Astrid Tasks back from the dead
MVVM-Architecture - The practice of MVVM + Jetpack architecture in Android.
Voice - Minimalistic audiobook player
cascade - Nested popup menus with smooth height animations
clikt - Multiplatform command line interface parsing for Kotlin
Material-BottomNavigation - Bottom Navigation widget component inspired by the Google Material Design Guidelines at https://www.google.com/design/spec/components/bottom-navigation.html
FragNav - An Android library for managing multiple stacks of fragments
Multi-Selection - Multiselection Solution for Android in Kotlin
kotlin-logging - Lightweight logging framework for Kotlin. A convenient and performant logging library wrapping slf4j with Kotlin extensions
shadow - Deprecated because of the performance not fine. Android custom shadow view, can replace your CardView
Barista - :coffee: The one who serves a great Espresso
fluid-slider-android - :octocat:💧 A slider widget with a popup bubble displaying the precise value selected. Android library made by @Ramotion
FabFilter - Android app to showcase complex UI/Animations with and without MotionLayout
contour - Layouts with lambdas 😎
Bubble-Picker - An easy-to-use animation which can be used for content picking for Android
Cyanea - A theme engine for Android
TransformationLayout - 🌠 Transform into a different view or activity using morphing animations.
IntelliJ-EmmyLua - Lua IDE/Debugger Plugin for IntelliJ IDEA
Android-Indefinite-Pager-Indicator - A lightweight, plug-and-play indefinite pager indicator for RecyclerViews & ViewPagers.
StateMachine - A Kotlin DSL for finite state machine
SmoothBottomBar - A lightweight Android material bottom navigation bar library
clean-architecture-components-boilerplate - A fork of our clean architecture boilerplate, this time using the Android Architecture Components
android-target-tooltip - Create Toast like tooltips, but targets can be specified, plus custom properties and features
CircularProgressBar - Create circular ProgressBar in Android ⭕
MultiStateView - Android View that displays different content based on its state
materialChipView - Material Chip view. Can be used as tags for categories, contacts or creating text clouds
LoggingInterceptor - An OkHttp interceptor which has pretty logger for request and response. +Mock support
idea-gitignore - .ignore support plugin for IntelliJ IDEA
MaterialStyledDialogs - A library that shows a beautiful and customizable Material-based dialog with header. API 14+ required.
KotlinUdemy - Learn how to make online games, and apps for Android O, like Pokémon , twitter,Tic Tac Toe, and notepad using Kotlin
android-snowfall - Fully customizable implementation of "Snowfall View" on Android.
kotlinx.html - Kotlin DSL for HTML
Kakao - Nice and simple DSL for Espresso in Kotlin
VPNHotspot - Share your VPN connection over hotspot or repeater! (root required)
TimberX - Material theme music player that works across all form factors (phones, wear, auto, cast, assistant) and uses latest tools (Kotlin, Architecture components, Room, Databinding)
jasync-sql - Java & Kotlin Async DataBase Driver for MySQL and PostgreSQL written in Kotlin
tachiyomi-extensions - Source extensions for the Tachiyomi app.
CatLoadingView - Android CatLoadingView
input-mask-android - User input masking library repo.
DrawableToolbox - 🛠️ The missing drawable toolbox for Android. Create drawables programmatically and get rid of the boring and always repeated drawable.xml files.
kyrie - 🍀 Animated Vector Drawables on steroids 🍀
Switcher - Android implementation of switch animation from Oleg Frolov
SpeedView - Dynamic Speedometer and Gauge for Android. amazing, powerful, and multi shape :zap:
Tusky - An Android client for the microblogging server Mastodon
CodeGlance - Intelij IDEA plugin for displaying a code mini-map similar to the one found in Sublime
MaterialFiles - Material Design file manager for Android
TimelineView - Cute timeline view for android
element-android - A glossy Matrix collaboration client for Android.
CircleMenu - CircleMenu is a simple, elegant menu with a circular layout.
apkupdater - APKUpdater is an open source tool that simplifies the process of finding updates for your installed apps.
graphql-kotlin - Libraries for running GraphQL in Kotlin
bugsnag-android - Bugsnag crash monitoring and reporting tool for Android apps
material-cab - 🚕 An Android & Kotlin library for placing and manipulating Contextual Action Bars in your UI.
MaterialSearchView - Android Search View based on Material design guidelines.
ReadableBottomBar - Yet another material bottom bar library for Android
android-historian - A demo of the Android Material Design Support libraries
photo-affix - 📷 Stitch your photos together vertically or horizontally easily!
Kaspresso - Great UI test framework
kotlin-android-template - Android + Kotlin + Github Actions + ktlint + Detekt + Gradle Kotlin DSL + buildSrc = ❤️
gradle-dependency-graph-generator-plugin - Gradle plugin that generates dependency graphs from your project.
KaMPKit - KaMP Kit by Touchlab is a collection of code and tools designed to get your mobile team started quickly with Kotlin Multiplatform.
spark-kotlin - A Spark DSL in idiomatic kotlin // dependency: com.sparkjava:spark-kotlin:1.0.0-alpha
Time - Type-safe time calculations in Kotlin, powered by generics.
Sneaker - A lightweight Android library for customizable alerts
MVVM-Kotlin-Android-Architecture - MVVM + Kotlin + Retrofit2 + Hilt + Coroutines + Kotlin Flow + mockK + Espresso + Junit5
GraphView - Android GraphView is used to display data in graph structures.
WaveDisPlay - A view that can be used like recyclerView to see the content of the next or previous page
Croppy - Image Cropping Library for Android
BlackLight - A light Sina Weibo client for Android
ktx - LibKTX: Kotlin extensions for LibGDX games and applications
accompanist - A collection of extension libraries for Jetpack Compose
KAndroid - Kotlin library for Android
MeowBottomNavigation - Android Meow Bottm Navigation
code-reader - One Multi program language code reader
android-clean-architecture-mvi-boilerplate - A fork of our clean architecture boilerplate using the Model-View-Intent pattern
funKTionale - Functional constructs for Kotlin
Flym - Flym News Reader is a light Android feed reader (RSS/Atom)
Rocket.Chat.Android - Legacy mobile Rocket.Chat client in Kotlin for Android
android_dbinspector - Android library for viewing and sharing in app databases.
Ribble - Simple Dribbble Client using Dribbble API, fully written in Kotlin 😱 ❤️
dgs-framework - null
AutoFitTextView - A TextView that automatically fit its font and line count based on its available size and content
Jetpack-Compose-Playground - Community-driven collection of Jetpack Compose example code and tutorials :rocket: https://foso.github.io/compose
McImage - Android Gradle Plugin -- Auto Check big image and compress image in building.
MapMe - The Android maps adapter
MVICore - MVI framework with events, time-travel, and more
android - :iphone: Home Assistant Companion for Android
debug-bottle - 🍼Debug Bottle is an Android runtime debug / develop tools written using kotlin language.
Shizuku - Using system APIs directly with adb/root privileges from normal apps through a Java process started with app_process.
Showkase - 🔦 Showkase is an annotation-processor based Android library that helps you organize, discover, search and visualize Jetpack Compose UI elements
UltimateBarX - Make Android transparent statusbar and navigationbar easy.
MultiSearchView - Yet another built-in animated search view for Android.
PeopleInSpace - Minimal Kotlin Multiplatform project using Jetpack Compose and SwiftUI
refreshVersions - Life is too short to google for dependencies and versions
jackson-module-kotlin - Module that adds support for serialization/deserialization of Kotlin (http://kotlinlang.org) classes and data classes.
kotlin-coroutines-retrofit - Kotlin Coroutines await() extension for Retrofit Call
rabbit-client - 🐰 a simple and easy to use android apm framework (tools)
adb-event-mirror - Mirror the touch/key/button events of one device onto one or more other devices in real-time
ktorm - A lightweight ORM framework for Kotlin with strong-typed SQL DSL and sequence APIs.
Morphing-Material-Dialogs - Material dialog :heart: morphing animation. An android kotlin UI library for building beautiful animations for converting a floating action button into a material dialog.
morph-bottom-navigation - This library represents a Bottom Navigation with an awesome morph effect on top of the selected item
idea-multimarkdown - Markdown language support for IntelliJ IDEA.
Material-Calendar-View - Material Calendar View for Android
AssistedInject - Assisted injection for JSR 330.
android-testing - Android Testing Codelab
KedditBySteps - Small Reddit Android client developed with Kotlin
LastAdapter - Don't write a RecyclerView adapter again. Not even a ViewHolder!
kotlinx-datetime - KotlinX multiplatform date/time library
AndroidVeil - :performing_arts: An easy, flexible way to implement veil skeletons and shimmering effect for Android.
AceJump - 🅰️ single character search, select, and jump
slidetoact - A simple 'Slide to Unlock' Material widget for Android, written in Kotlin 📱🎨🦄
stripe-android - Stripe Android SDK
KorGE - KorGE Game Engine. Multiplatform Kotlin Game Engine
libaums - Open source library to access USB Mass Storage devices on Android without rooting your device
kotlin-wrappers - Kotlin wrappers for popular JavaScript libraries
assent - 🙏 Android Runtime Permissions made easy and compact, for Kotlin and AndroidX. With coroutines support!
AnimatedBottomBar - A customizable and easy to use BottomBar navigation view with sleek animations, with support for ViewPager, ViewPager2, NavController, and badges.
CodeView-Android - Display code with syntax highlighting :sparkles: in native way.
WaitingDots - null
insetter - Insetter is a library to help apps handle WindowInsets more easily
MotionToast - 🌈 A Beautiful Motion Toast Library for Kotlin Android
Reaktive - Kotlin multi-platform implementation of Reactive Extensions
Localization - [Android] In-app language changing library
navigation-toolbar-android - :octocat: Navigation toolbar is a slide-modeled UI navigation controller made by @Ramotion
BottomSheetMenu - BottomSheetMenu style dialogs for Android
awesome-android-learning-resources - 👓 A curated list of awesome android learning resources for android app developers.
ViewPump - View Inflation you can intercept.
CounterFab - A FloatingActionButton subclass that shows a counter badge on right top corner
Nammu - Permission helper for Android M - background check, monitoring and more
StickySwitch - ⭐️ beautiful switch widget with sticky animation ⭐️
cycler - null
TimetableLayout - TimetableLayout is a RecyclerView.LayoutManager to display the timetable for Android.
Kluent - Fluent Assertion-Library for Kotlin
ktor-samples - Sample projects for Ktor
Kotson - Kotlin bindings for JSON manipulation via Gson
creative-viewpager - Creative View Pager easy to use in Android
LiquidSwipe - Android LiquidSwipe Library
permissions-dispatcher-plugin - IntelliJ plugin for supporting PermissionsDispatcher
Result - The modelling for success/failure of operations in Kotlin
kotless - Kotlin Serverless Framework
gradle-recipes - Ready-to-use recipes for common build customizations that showcase the Android Gradle plugin's public APIs and DSL.
ComposeAcademy-Playground - Playground project for the Jetpack Compose APIs
turbine - A small testing library for kotlinx.coroutines Flow
notify - Simplified notification construction and delivery for Android.
deep-clean - When Gradle or the IDE let you down, just --nuke all them caches
MotionLayoutCarousel - Simple Carousel built with Android MotionLayout
magellan - The simplest navigation library for Android.
ZoomLayout - 2D zoom and pan behavior for View hierarchies, images, video streams, and much more, written in Kotlin for Android.
ktlint-gradle - A ktlint gradle plugin
Transportr - Free Public Transport Assistant without Ads or Tracking
Spark - 🎨 An Android library to create gradient animation like Instagram&Spotify
RoboPOJOGenerator - IntelliJ IDEA/Android studio plugin: Json to Java and Kotlin POJO (GSON, Logan Square, Jackson, FastJSON, AutoValue, Moshi)
wormhole - A time-traveling bytecode rewriter which adds future APIs to android.jar
graphql-java-tools - A schema-first tool for graphql-java inspired by graphql-tools for JS
Mango - 🏀 An Android app for dribbble.com
kovenant - Kovenant. Promises for Kotlin.
PhysicsLayout - Android layout that simulates physics using JBox2D
kotshi - An annotation processor that generates Moshi adapters from immutable Kotlin data classes.
recyclical - 🚀 An easy-to-use, extensible Kotlin DSL for setting up and manipulating RecyclerViews.
KotlinMultiPlatform - Kotlin MultiPlatform App (Android, iOS, JVM & JS). MVVM/MVP - Kotlin MultiPlatform
ProgressButton - Android Progress Button
ScreenStream - Screen Stream over HTTP mobile app
Shot - Gradle plugin developed to facilitate screenshot testing for Android
intellij-solidity - Solidity plugin for IntelliJ
CallRecorder - Android Phone Call Recorder
ModularizationExample - Easy to understand real-life example of a modularized Android app
Music-Player-GO - 🎶🎼 Very slim music player 👨‍🎤 100% made in Italy 🍕🌳🌞🍝🌄
retrofit2-kotlinx-serialization-converter - A Retrofit 2 Converter.Factory for Kotlin serialization.
show-java - An APK (android application), JAR & Dex decompiler for android.
espresso-samples - A collection of samples demonstrating different Espresso techniques.
kotlin-language-server - Intelligent Kotlin support for any editor/IDE using the Language Server Protocol
MinecraftDev - Plugin for IntelliJ IDEA that gives special support for Minecraft modding projects.
reactive-mvvm-android - My way to MVVM using KotlinX Coroutines and Android data-binding
Simple-File-Manager - Easy app for managing your files without ads, respecting your privacy & security
picnic - A Kotlin DSL and Java/Kotlin builder API for constructing HTML-like tables which can be rendered to text
Stepper-Touch - Stepper Touch for Android based on MaterialUp submission
countries - An example Android app using Retrofit, Realm, Parceler, Dagger and the MVVM pattern with the data binding lib.
android-kotlin-mvp-architecture - This repository contains a detailed sample app that implements MVP architecture in Kotlin using Dagger2, Room, RxJava2, FastAndroidNetworking and PlaceholderView
Kotpref - Kotpref - Android SharedPreferences delegation library for Kotlin
scabbard - 🗡 A tool to visualize Dagger 2 dependency graphs
Leku - :earth_africa: Map location picker component for Android. Based on Google Maps. An alternative to Google Place Picker.
ZoomRecylerLayout - 🎢 Zoom Recycler Layout Manager For Android Kotlin
FluidKeyboardResize - Smoothly reacting to keyboard visibility changes in Android
FlowBinding - Kotlin Coroutines Flow binding APIs for Android's platform and unbundled UI widgets, inspired by RxBinding.
kvision - Object oriented web framework for Kotlin/JS
lockwise-android - Firefox's Lockwise app for Android
Posts - A sample Android app using Kotlin, Dagger 2, RxJava, RxAndroid, Retrofit and Android Architecture Components with a modular setup & effective networking
GuideToCustomViews - The ultimate guide to Android custom views
ImagePicker - 📸Image Picker for Android, Pick an image from Gallery or Capture a new image with Camera
Charlatano - Proves JVM cheats are viable on native games, and demonstrates the longevity against anti-cheat signature detection systems
komga - Media server for comics/mangas/BDs with API and OPDS support
turbo-intruder - Turbo Intruder is a Burp Suite extension for sending large numbers of HTTP requests and analyzing the results.
IndicatorFastScroll - Android library providing a simple UI control for scrolling through RecyclerViews
kotlin-android-starter - [Kotlin Android] Kotlin Android starter based MVP/Dagger2/RxJava2/Robolectric/Espresso/Mockito. It provides a generator to fast create a Kotlin Android project.
android-startup - 🔥The Android Startup library provides a straightforward, performant way to initialize components at the application startup. .
SDKHotFix - A SDK hotfix library with stable verified in tens of millions of users can be accessed in only five minutes.
ElasticViews - :sparkles: An easy way to implement an elastic touch effect for Android.
vvalidator - 🤖 An easy to use form validator for Kotlin & Android.
ErrorView - A custom view that displays an image, a title, and a subtitle. Use it for errors, empty states, or just messages with images!
kotlin-frontend-plugin - Gradle Kotlin (http://kotlinlang.org) plugin for frontend development
glimpse-android - A content-aware cropping library for Android
RecyclerView-FastScroller - A fully customizable Fast Scroller for the RecyclerView in Android, written in Kotlin
anvil - A Kotlin compiler plugin to make dependency injection with Dagger 2 easier.
workshop - JetBrains Kotlin Workshop Material
kotlinconf-spinner - null
Simple-Music-Player - A clean music player with a customizable widget, stylish interface and no ads.
Theatre - Pet project using Clean Architecture + MVVM + Reactive Extensions + Android Architecture Components. The data are fetched from LondonTheatreDirect API. 🎭
PokemonGoBot - DEFUNCT - Bot that plays Pokemon Go
kotlin-99 - Ninety-Nine Problems in Kotlin
Glance - A simple and handy Android database debugging library.
toolargetool - A tool to help you debug TransactionTooLargeExceptions on Android 7
MaterialPopupMenu - Shows Material popup menus grouped in sections & more
ElasticView - Elastic view is a regular CardView, which can flex from user touches
klock - Multiplatform Date and time library for Kotlin
Java Time Fun - Java.time Kotlin extension functions library.
android-junit5 - Testing with JUnit 5 for Android.
FingerprintManager - A small library to handle Android fingerprint API.
kotlin-algorithm-club - Algorithms and data structures in Kotlin.
composer - Reactive Android Instrumentation Test Runner. Archived. Marathon is recommended as an alternative (https://github.com/Malinskiy/marathon).
AnimatedTabLayout - Yet another android tab layout
intellij-platform-plugin-template - Template repository for creating plugins for IntelliJ Platform
opentrace-android - OpenTrace Android app. Reference implementation of the BlueTrace protocol.
ChatMessageView - Chat UI library for Android :zap:
kweb-core - A lightweight Kotlin web framework for backend developers 🦆
kotlin-math - Set of Kotlin APIs to make graphics math easier to write
Math Common - Math conventions to reduce boilerplate code on rounding and exponentiation
Percentage Percentage calculations made easy
spring-boot-kotlin-demo - Spring Boot Kotlin project with a REST Webservice and Spring Data
ChangeDetection - Automatically track websites changes on Android in background.
dependency-tree-diff - An intelligent diff tool for the output of Gradle's dependencies task
mpv-android - #mpv-android @ freenode
EmojiSlider - 🤯 A slider widget rich in emoji and highly customisable.
SurvivalManual - Libre Survival Manual for Android with offline in mind
Animation-Tutorials - 🍭🚀💗 Tutorials about animations with Animators, Animated Vector Drawables, Shared Transitions, and more
android-kotlin-fundamentals-starter-apps - android-kotlin-fundamentals-starter-apps
RxRedux - Redux implementation based on RxJava
grpc-kotlin - null
SnapTabLayout - Android library for fluid tablayout animation as seen on Snapchat.
gradle-advanced-build-version - A plugin to generate the Android version code and version name automatically based on git commits number, date and ...
zircon - Zircon is an extensible and user-friendly, multiplatform tile engine.
android-navigation - null
Light - 🍭 The usual Snackbar, but elegant
Needs - :closed_umbrella: An easy way to implement modern permission instructions popup.
openfoodfacts-androidapp - Native version of Open Food Facts on Android - Coders & Decoders welcome 🤳🥫
KotlinPleaseAnimate - Kotlin, please, can you animate my views ?
Kotlin-Coroutines-Android-Examples - Learn Kotlin Coroutines for Android by Examples. Learn how to use Kotlin Coroutines for Android App Development.
kotlin-dagger-example - Example of Android project showing integration with Kotlin and Dagger 2
GradleKotlinConverter - Convert from Groovy to Kotlin DSL for Gradle, focused on Android.
Alpas - The rapid and delightful Kotlin web framework
Valiktor - Valiktor is a type-safe, powerful and extensible fluent DSL to validate objects in Kotlin.
Konform - Konform is a type-safe, multiplatform kotlin object validator with fluent dsl.
FlexboxLayout - FlexboxLayout is a library project which brings the similar capabilities of CSS Flexible Box Layout Module to Android.
Anko - Anko is a library which makes Android application development faster and easier.
kotlinx.coroutines - Library support for Kotlin coroutines.
RxDownload - A multi-threaded download tool written with RxJava and Kotlin.
ActivityStarter - Android Library that provide simpler way to start the Activities with multiple arguments.
SQLDelight - Generates Java models from CREATE TABLE statements.
RxKotlin - Kotlin Adaptor for RxJava
SuperSLiM - A layout manager for the RecyclerView
Kotlin/Native - a LLVM backend for the Kotlin compiler
Bubble-Picker - An easy-to-use animation which can be used for content picking for Android
ktor - Kotlin Web backend framework.
KBinding - Android MVVM framework write in kotlin.
TornadoFX - Lightweight JavaFX Framework for Kotlin
KotlinPreferencesObject - Kotlin Android Library, that makes preference usage in Kotlin simple and fun, using single object with fields binded to SharedPreferences.
Kotter Knife - View "injection" library for Android.
Koi - A lightweight kotlin library for Android, including many useful extensions, async functions and quick adapter.
Wasabi - An HTTP Framework
Kara Web Framework - Kara is a web framework for the JVM written in Kotlin.
Kovenant - Promises for Kotlin
KAndroid - Kotlin library for Android providing useful extensions to eliminate boilerplate code
KAConf - KickAss Configuration. An annotation-based configuration system for Java and Kotlin
Stateful - Stateful helps you delete all the boilerplate code for saving instance state and lets you forget about saving and restoring your fragment's/activity's state.
Fuel - The easiest HTTP networking library for Kotlin/Android.
funKTionale - Functional constructs and patterns for Kotlin
Kotson - Gson for Kotlin, Kotson enables you to parse and write JSON with Google's Gson using a conciser and easier syntax.
Kwery - Kwery is an SQL library for Kotlin.
kotlin-core and its related reposiories - A full framework for making Android apps. Based on Anko and Kotson.
Kotlin NoSQL - Kotlin NoSQL is a reactive and type-safe DSL for working with NoSQL databases.
shadow - Android custom shadow view, can replace your CardView.
Exposed - Exposed is a prototype for a lightweight SQL library written over JDBC driver for Kotlin language.
Klaxon - Klaxon is a lightweight library to parse JSON in Kotlin.
Kobalt - Kobalt is a modern and versatile build system.
Debug Bottle - Debug Bottle is an Android runtime debug / develop tools written using kotlin language.
jackson-module-kotlin - Module that adds support for serialization/deserialization of Kotlin classes and data classes.
Kodein - Kodein: Kotlin Dependency Injection
KBuilders - KBuilders turns your Java builders into beautiful Type-Safe Builders.
Result - This is a tiny framework for modelling success/failure of operations in Kotlin.
Spek - A Specification Framework for Kotlin
Klutter - Library of many small useful things
Kovert - an invisible, super easy and powerful REST and Web framework overt Vert.x or Undertow
Injekt - native Kotlin dependency injection (object registry style)
Solr-Undertow - standalone high perforamnce, simple Solr server. Embeddeable as a library.
Gradle Kotlin DSL - Kotlin language support for Gradle build scripts.
Kotgo - An android development framework on kotlin using MVP architecture.
KillerTask - Android AsyncTask wrapper library, written in Kotlin
Bansa - A state container for Kotlin & Java, inspired by Elm & Redux
Kotest - A kotlin test framework formerly known as Kotlintest
kotlin.logging - A logging framework for Kotlin
Kotlin User Onboarding - A simple and customizable android onboarding library written in Kotlin matching Material Guidelines.
KotlinDiscreteMathToolkit - Set of extensions for Kotlin that provides Discrete math functionalities.
Mystique - A generalized adapter for RecyclerView on Android which makes it easy to add heterogeneous items to a list
Vaadin-On-Kotlin - A simple way to write full-stack component-oriented web apps
Properlty - Simple configuration library with placeholders resolution and zero magic!
NoiseView - Android library written in kotlin that add noise effect to image.
GAnalytics - A tiny api layer for any analytics in application
PreferenceHolder - Library that is making SharedPreference usage in Kotlin simple and fun.
LastAdapter - Don't write a RecyclerView adapter again. Not even a ViewHolder!
FerrisWheelView - Simple android library to present an animated ferris wheel.
kotlin-result - A Result monad for modelling success or failure operations, inspired by Rust, Elm, Haskell & Scala.
Kotlin-Gremlin-OGM - A type-safe object/graph mapping framework for Gremlin enabled graph databases.
DynamoDB-utils - Collection of AWS DynamoDB utility functions. Query DSL, table cloner and batch writer.
KBus - Dead simple EventBus for Android made with Kotlin and RxJava 2.
AndroidCoroutineScopes - This lib implements the most common CoroutineScopes used in Android apps.
Gradients - A curated collection of splendid gradients
Kanary - A minimalist web framework for building REST APIs in Kotlin/Java.
Kissme - Kissme is a multiplatform library providing encrypted key-value storage.
Arrow - Arrow is a functional companion to Kotlin's Standard Library around many of Kotlin's pain points.
Hoplite - Purely functional config library
kotlin-compile-testing - A library for testing Kotlin and Java annotation processors, compiler plugins and code generation
koin - A pragmatic lightweight dependency injection framework for Kotlin developers. Written in pure Kotlin, using functional resolution only: no proxy, no code generation, no reflection.
firebase-kotlin-sdk - A Kotlin-first Multiplatform SDK for Firebase supporting iOS, Android & Web.
graphql-kotlin-toolkit - GraphQL toolkit for Kotlin (includes code generator and spring boot integration)
MobileUI - Cross-platform framework for developing mobile apps (iOS, Android) with native UI in Java and Kotlin.
TelegramBotAPI - Cross-platform (JVM and JS) library which wrap Telegram Bots API using strong-typed, object-oriented and useful way
PopKorn - Multiplatform Dependency Injection (JVM, ANDROID, IOS, JS) - Forget about modules and components. DI can be simple.
Codename One - Cross-platform framework for building native apps for mobile, desktop & web in Kotlin and Java.
kotlin-csv - Pure Kotlin CSV Reader/Writer
OPENRNDR - A Kotlin/JVM library for creative coding, real-time and interactive graphics.
kotlin-semver - Semantic Versioning library for Kotlin Multiplatform.
IntroShowCaseView - IntroShowCaseView is an android library to highlight different features of the app built using Jetpack Compose.
ShapeShift - A Kotlin library for intelligent object mapping and conversion between objects.
Kryptokrona Kotlin SDK - Kryptokrona SDK in Kotlin for building decentralized private communication and payment systems.
kotliny.network - Simple, powerful and lightweight Kotlin Multiplatform Network Client (JVM, ANDROID, IOS)
Kim - Kotlin Image Metadata - Kotlin Multiplatform library for reading and writing image metadata (JVM, ANDROID, IOS)
XMP Core for Kotlin Multiplatform - Kotlin Multiplatform library for reading and writing XMP files (JVM, ANDROID, IOS)
Wavy Slider - A demo (and usable) multiplatform Compose library that shows how to make a UI component targeting multiple platforms
KStateMachine - KStateMachine is a Kotlin DSL library for creating state machines and statecharts.
RichEditor
AnimatedBottomBarCompose
CoSec - RBAC-based And Policy-based Multi-Tenant Security Framework.
CoSky - High-performance, low-cost microservice governance platform. Service Discovery and Configuration Service.
Wow - A Modern Reactive CQRS Architecture Microservice development framework based on DDD and EventSourcing.
dotenv-kotlin - Dotenv is a module that loads environment variables from a .env file
kotlindl - High-level Deep Learning Framework written in Kotlin and inspired by Keras
multik - Multidimensional array library for Kotlin
compose-menu – An unstyled Menu (Dropdown) Compose Multiplatform component with keyboard navigation and animation support.
Kotlin/Native Runtime for AWS Lambda - A runtime for executing AWS Lambda functions written in Kotlin/Native, designed to reduce cold start issues common with the JVM platform.

Applications

DuckDuckGo - DuckDuckGo Android App
WordPress-Android - WordPress for Android
fenix - Firefox for Android
iosched - The Google I/O 2019 Android App
Magisk - The Magic Mask for Android
tachiyomi - Free and open source manga reader for Android.
sourcerer-app - 🦄 Sourcerer app makes a visual profile from your GitHub and git repositories.
uhabits - Loop Habit Tracker, a mobile app for creating and maintaining long-term positive habits
kotlinconf-app - KotlinConf Schedule Application
TapTap - Port of the double tap on back of device feature from Android 11 to any Android 7.0+ device
Simple-Gallery - Browse your memories without any interruptions with this photo and video gallery
Foodium - 🍲Foodium is a sample food blog Android application 📱 built to demonstrate the use of Modern Android development tools .
KeePassDX - :iphone: KeePass implementation for android with material design and deluxe features
RetroMusicPlayer - Best material design music player for Android
vlc-android - VLC for Android, Android TV and ChromeOS
COVID-19-app-Android-BETA - Source code of the Beta of the NHS COVID-19 Android app
orgzly-android - Outliner for taking notes and managing to-do lists
Android-Password-Store - Android application compatible with ZX2C4's Pass command line application
WiFiAnalyzer - Android application to analyze WiFi signals.
OpenNoteScanner - Android application for scanning and manipulating handwritten notes and documents.
immuni-app-android - Official repository for the Android version of the immuni application
MarvelHeroes - ❤️ A sample Marvel heroes application based on MVVM (ViewModel, Coroutines, LiveData, Room, Repository, Koin) architecture.
PassAndroid - Android App to view passes
proton-mail-android - ProtonMail Android app
conference-app-2020 - The Official Conference App for DroidKaigi 2020 Tokyo
conference-app-2019 - The Official Conference App for DroidKaigi 2019 Tokyo
conference-app-2018 - The Official Conference App for DroidKaigi 2018 Tokyo
habitica-android - Native Android app for Habitica
android-architecture-counter-sample - Sample app using Android architecture components
ridesharing-uber-lyft-app - Ride-Sharing Uber Lyft Android App - Learn to build a ride-sharing Android Taxi Clone App like Uber, Lyft - Open-Source Project By MindOrks
CatchUp - An app for catching up on things.
tivi - Tivi is a work-in-progress TV show tracking Android app, which connects to Trakt.tv. It is still in its early stages of development and currently only contains two pieces of UI. It is under heavy development.
Kotlin-for-Android-Developers - Companion App for the book
Pokedex - 🗡️ Android Pokedex using Hilt, Motion, Coroutines, Flow, Jetpack (Room, ViewModel, LiveData) based on MVVM architecture.
susi_android - SUSI.AI Android App https://play.google.com/apps/testing/ai.susi
SdkSearch - An Android app and Chrome extension for searching the Android SDK documentation.

Samples

MovieNight - MovieNight is a sample Android application that uses the clean architecture approach and is written in Kotlin.
kotlin-android-examples - :muscle: [Examples] Isolated applications purely on Kotlin, for all android devs out there
android-showcase - 💎 Android application following best practices: Kotlin, coroutines, Clean Architecture, feature modules, tests, MVVM, static analysis...
android-kotlin-fundamentals-apps - android-kotlin-fundamentals-apps
Kotlin-Pokedex - :cyclone: A Pokedex app using ViewModel, LiveData, Room and Navigation
kotlin-fullstack-sample - Kotlin Full-stack Application Example
Learn-Jetpack-Compose-By-Example - 🚀 This project contains various examples that show how you would do things the "Jetpack Compose" way
kotlin-examples - Various examples for Kotlin
architecture-samples - A collection of samples to discuss and showcase different architectural tools and patterns for Android apps.
architecture-components-samples - Samples for Android Architecture Components.
Candy-Crush-Clone - 🎮🍭 A Kotlin Multiplatform match 3 sample game build with KorGE
compose-samples - Official Jetpack Compose samples.
cheesesquare - Demos the new Android Design library.
sunflower - A gardening app illustrating Android development best practices with Android Jetpack.
uamp - A sample audio app for Android
camera-samples - Multiple samples showing the best practices in camera APIs on Android.
cwa-app-android - Native Android app using the Apple/Google exposure notification API.
Kotlin-Coroutine-Use-Cases-on-Android - 🎓 Learning Kotlin Coroutines for Android by example.
YoutubeUX - With MVVM Architecture pattern using Android Architecture Components This is a sample app demonstrating Youtube player animation using constraint layout
Android-CleanArchitecture-Kotlin - This is a movies sample app in Kotlin.
material-components-android-examples - Companion example apps and code for MDC-Android.
Bandhook-Kotlin - A showcase music app for Android entirely written using Kotlin language
Sudoscan - Scans and solves Sudoku Puzzles from images using AI
Alpas Fireplace
kotlin-examples
Tachiyomi
Bandhook-Kotlin
AndroidRivers
MaterialAudiobookPlayer
Lightning Browser
Kotlin for Android Developers
kotlin-dagger-example
Kotlin101
kotlin_android_base_framework
kotlillon
Today History
tachiyomi
GreenHellCompanionApp
Gradle buildSrcVersions
Pokedex App
ArchApp - Simple Android app to show how to design a multi-modules MVVM Android app (fully tested)
LEGO-Catalog - A LEGO® Catalog app illustrating current Android Architecture state using Android development best practices.
News - A sample News 🗞 app built using Modern Android Development (Architecture Components, Coroutines, Retrofit, Room, Kotlin, Dagger)
DisneyMotions - 🦁 A Disney app using transformation motions based on MVVM (ViewModel, Coroutines, Flow, LiveData, Room, Repository, Koin) architecture.
AdaptiveIconPlayground - An Android app for experimenting with Adaptive Icons.
kickmaterial - Crowdfunding app concept for Android. Created to showcase new trends in Android development with strong focus on Material Design.
plaid - An Android app which provides design news & inspiration as well as being an example of implementing material design.
PaperPlane - 📚 PaperPlane - An Android reading app, including articles from Zhihu Daily, Guokr Handpick and Douban Moment.
Android-Kotlin-Clean-Architecture - Android Sample Clean Architecture App written in Kotlin

Tutorials

Articles

Videos

Books

Kotlin for Android Developers - This book is not meant to be a language reference, but a tool for Android developers to learn Kotlin and be able to continue with their own projects by themselves.
Kotlin in Action (MEAP) - Kotlin in Action takes experienced Java developers from the language basics all the way through building applications to run on the JVM and Android devices.
Programming Kotlin - Programming Kotlin is aimed at Java developers who want to make the transition to Kotlin. It covers the complete Kotlin language from basic sytax through to concurrency and testing.
Modern Web Development with Kotlin - Modern Web Development with Kotlin is a book by Denis Kalinin about Web development with Kotlin.
Fundamental Kotlin - Fundamental Kotlin is a book focused on Kotlin programming language and its comparison to Java.
Effective Kotlin - Effective Kotlin summarizes the best practices and experiences of the Kotlin community, together with a deep explanation of some lesser-known Kotlin functionalities. All of the best practices are presented as simple rules with detailed explanations.
Kotlin Blueprints - a practical guide to help build industry grade web applications (Spring Boot, JavaScript, Node.js), Android, Desktop application using TornadoFX. It also includes building an application with Kotlin Native. It shows how to leverage features of Kotlin in the respective technologies. This book is for developers who already know Kotlin and want to build something using Kotlin for Web/Android/Desktop/Native
Functional Programming in Kotlin - Master techniques and concepts of functional programming to deliver safer, simpler, and more effective Kotlin code.
Kotlin in Action, Second Edition - A book about Kotlin with expert guidance and amazing examples from core Kotlin’s developers.
Kotlin: An Illustrated Guide - An illustrated guide to learning Kotlin.

Tools

sonarlint-intellij - An IDE extension that helps you detect and fix quality issues as you write code.
IntelliJ IDEA 15 - The best Kotlin IDE, support Java, Groovy, Scala and Android development.
dokka - Dokka is a documentation engine for Kotlin, performing the same function as javadoc for Java.
kotlin-vim - Kotlin plugin for Vim. Featuring syntax highlighting and basic indentation
kotlin-sublime-package - Sublime Text 2 Package for Kotlin Programming Language
language-kotlin - Kotlin language support in Atom
kotlin-plugin-eclipse - The Kotlin Plugin for Eclipse helps you write, run, debug and test programs in Kotlin language.
android-parcelable-intellij-plugin-kotlin - Plugin which generates Android Parcelable boilerplate code in Intellji/Android Studio.
CodeGlance - Intelij IDEA plugin for displaying a code mini-map similar to the one found in Sublime.
kscript - Enhanced scripting support for Kotlin on *nix-based systems.
detekt - Static code analysis for Kotlin.
detekt-hint - Detection of design principle violations as a plugin to detekt.
kotlin-jupyter - Kotlin kernel for Jupyter/IPython
StringSwitch - Easily convert Android strings.xml format to iOS .strings files and vice versa.

Resources

Kotlin coding puzzles - Set of programming challenges thats helps to improve whiteboard coding and problem-solving skills.
Explore Kotlin - A curated list of Kotlin libraries, authors, kits, tutorials & learning resources.
/r/Kotlin
Kotlin Trending on Github
Kotlin Academy
Curated Kotlin Resources
Kotlin: An Illustrated Guide - An illustrated guide to learning Kotlin..
Composables.com – Components for Compose Multiplatform and Jetpack Compose with images and code samples.

Others

kotlin-for-android-developers-zh
Kotlin-in-Chinese
Kotlin-Website-CN
Kotlin Reference in Chinese
jetpack compose - We all want to simplify state management. Be it a life or application or a screen, limiting mutable states that a component can be in, benefits everyone.

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