Awesome Kotlin (https://kotlin.link)

A curated list of awesome Kotlin related stuff inspired by awesome-java.

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Table of Contents

Links

• Official Links
• Resources
• Books and Courses

Libraries/Frameworks

• Web
• Tests
• Dependency Injection
• Functional Programming
• JSON
• Database
• Tools
• Desktop
• Http Clients
• Editors
• Syntax Highlighters
• Game Development
• Misc
• Extensions
• Configuration
• Graphics
• Data Science
• Command Line Interface

Projects

• Web
• Build tools
• Misc
• Desktop
• Examples
• Idea Plugins

Android

• Libraries
• Frameworks
• Projects
• Extensions
• Tools

Kotlin JavaScript

• JavaScript
• Frontend
• Game Development
• Build Tools
• Integration

Kotlin Native

• Projects

Kotlin User Groups

• Europe
• America
• Asia
• Australia

Articles, Blog Posts

• April 2017
• March 2017
• February 2017
• January 2017
• December 2016
• November 2016
• October 2016
• September 2016
• August 2016
• July 2016
• June 2016
• May 2016
• April 2016
• March 2016
• February 2016
• January 2016
• December 2015
• November 2015
• October 2015
• September 2015
• August 2015
• July 2015
• June 2015
• December 2014
• April 2013
• February 2013
• January 2013

Videos

• April 2017
• December 2016
• November 2016
• October 2016
• September 2016
• August 2016
• May 2016
• April 2016
• March 2016
• January 2016
• October 2015
• August 2015
• December 2014
• November 2014
• September 2014

Slides

• April 2017
• November 2016
• September 2016
• April 2016
• May 2015

Webinars

• November 2015
• September 2015

Links ^{Back ⇈}

Official Links ^{Back ⇈}

• JetBrains/kotlin
• Home Page
• Language Reference
• Slack (6700+ users)
• Public chat archive of Kotlin's Slack
• Try Kotlin!
• Blog
• Issue Tracker
• Twitter
• Kotlin/KEEP - Kotlin Evolution and Enhancement Process

Resources ^{Back ⇈}

• /r/Kotlin
• Stackoverflow Documentation on Kotlin
• Quora Kotlin
• Trending Kotlin on Github
• Antonio Leiva - Android and any other monsters
• LinkedIn: Kotlin Developers (Join!)
• Kotlin - Google+
• From Java To Kotlin
• dbacinski/Design-Patterns-In-Kotlin - Design Patterns implemented in Kotlin.
• Kotlin Cheat Sheet

Books and Courses ^{Back ⇈}

• Kotlin in Action - Dmitry Jemerov, Svetlana Isakova
• Kotlin for Android Developers - Antonio Leiva
• Programming Kotlin - Stephen Samuel, Stefan Bocutiu
• Kotlin for Java Developers - 160-minute Android Course.
• Kotlin Programming: Next Level Java Development - Learn coding in Kotlin from scratch!
• Introduction to Kotlin Programming by Hadi Hariri - From Hello World to Interoperability with Java
• Advanced Kotlin Programming - From Nested Functions to Asynchronous Programming

Libraries/Frameworks ^{Back ⇈}

Web ^{Back ⇈}

• Kotlin/ktor - Web backend framework for Kotlin.
• TinyMission/kara - Web framework written in Kotlin.
• jean79/yested - A Kotlin framework for building web applications in Javascript.
• hhariri/wasabi - An HTTP Framework built with Kotlin for the JVM.
• Kotlin/kotlinx.html - Kotlin DSL for HTML.
• MarioAriasC/KotlinPrimavera - Spring support libraries for Kotlin.
• kohesive/kovert - An invisible, super easy and powerful REST and Web framework over Vert.x or Undertow.
• sdeleuze/spring-kotlin - Kotlin extensions for Spring projects.
• Kotlin/kotlinx.coroutines - Libraries built upon Kotlin coroutines.
• taskworld/kraph - GraphQL request string builder written in Kotlin
• sepatel/tekniq - Full-feature HTTP DSL Framework, HTTP Client, JDBC DSL, Loading Cache and Configuration
• vert-x3/vertx-lang-kotlin - This module provides Kotlin language bindings including DSL and extension functions for vert.x 3
• jooby/kotlin - Kotlin idioms for Jooby microframework
• gimlet2/kottpd - REST framework in pure Kotlin, inspired by spark-java
• kwebio/core - A Kotlin interface to one or more remote web-browsers.
• brianmadden/krawler - A web crawling framework written in Kotlin
• konrad-kaminski/spring-kotlin-coroutine - Kotlin coroutine support for Spring.

Tests ^{Back ⇈}

• JetBrains/spek - A specification framework for Kotlin.
• npryce/hamkrest - A reimplementation of Hamcrest to take advantage of Kotlin language features.
• nhaarman/mockito-kotlin - Using Mockito with Kotlin.
• MarkusAmshove/Kluent - Fluent Assertion-Library for Kotlin.
• winterbe/expekt - BDD assertion library for Kotlin.
• kotlintest/kotlintest - KotlinTest is a flexible and comprehensive testing tool for the Kotlin ecosystem based on and heavily inspired by the superb Scalatest.
• dmcg/konsent - An acceptance test library for Kotlin.
• raniejade/kspec - Kotlin Specification Framework.
• EPadronU/balin - Balin is a browser automation library for Kotlin. It's basically a Selenium-WebDriver wrapper library inspired by Geb.
• dmcg/k-sera - A JMock wrapper for Kotlin.
• dam5s/aspen - Aspen is an RSpec and Spek inspired test runner for Kotlin.

Dependency Injection ^{Back ⇈}

• SalomonBrys/Kodein - Painless Kotlin Dependency Injection .
• kohesive/injekt - (Deprecated, @see Kodein) Dependency Injection / Object Factory for Kotlin
• kailan/kodeinject - Constructor dependency injection for Kodein
• traversals/kapsule - Minimalist dependency injection library for Kotlin.

Functional Programming ^{Back ⇈}

• MarioAriasC/funKTionale - Functional constructs for Kotlin.
• ReactiveX/RxKotlin - RxJava bindings for Kotlin.
• kittinunf/Result - The modelling for success/failure of operations in Kotlin.
• brianegan/bansa - A state container for Kotlin & Java, inspired by Elm & Redux.
• pardom/redux-kotlin - Direct port of Redux for Kotlin.
• beyondeye/Reduks - A "batteries included" port of Reduxjs for Kotlin+Android
• pakoito/Komprehensions - Do comprehensions for Kotlin and 3rd party libraries.
• h0tk3y/kotlin-monads - Monads for Kotlin
• FineCinnamon/Katz - Typeful functional programming in Kotlin.
• poetix/klenses - Lenses for Kotlin.
• reactor/reactor-kotlin-extensions - Kotlin extensions for Reactor.

JSON ^{Back ⇈}

• cbeust/klaxon - Lightweight library to parse JSON in Kotlin.
• SalomonBrys/Kotson - Gson for Kotlin, Kotson enables you to parse and write JSON with Google's Gson using a conciser and easier syntax.
• FasterXML/jackson-module-kotlin - Jackson module that adds support for serialization/deserialization of Kotlin classes and data classes.
• fboldog/ext4klaxon - Type Extensions (Long, Int, Enum, Date) for Klaxon.
• Jire/KTON - Object notation in pure Kotlin!

Database ^{Back ⇈}

• JetBrains/Exposed - Exposed is a prototype for a lightweight SQL library written over JDBC driver for Kotlin language.
• cheptsov/kotlin-nosql - NoSQL database query and access library for Kotlin.
• jankotek/mapdb - MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap-memory. It is a fast and easy to use embedded Java database engine.
• seratch/kotliquery - A handy database access library in Kotlin.
• andrewoma/kwery - Kwery is an SQL library for Kotlin.
• square/sqldelight - Generates Java models from CREATE TABLE statements.
• x2bool/kuery - Typesafe SQL with Kotlin.
• Litote/kmongo - KMongo - Kotlin toolkit for Mongo
• requery/requery - Modern SQL based query & persistence for Java/Kotlin/Android.
• consoleau/kotlin-jpa-specification-dsl - This library provides a fluent DSL for querying spring data JPA repositories using spring data Specifications.
• s4kibs4mi/PultusORM - PultusORM is a sqlite ORM library for kotlin on top of sqlite jdbc driver.
• Ganet/rxaerospike - RxJava2 wrapper for aerospike-client-java.
• Raizlabs/DBFlow - A blazing fast, powerful, and very simple ORM android database library that writes database code for you.
• KotlinPorts/kt-postgresql-async - Kotlin/Gradle port of mauricio's async driver for postgres/mysql.

Tools ^{Back ⇈}

• Kotlin/dokka - Documentation Engine for Kotlin.
• Levelmoney/kbuilders - KBuilders turns your Java builders into beautiful Type-Safe Builders.
• holgerbrandl/kscript - Scripting utils for Kotlin.
• shyiko/ktlint - Kotlin linter.
• jtransc/jtransc - JVM AOT compiler created in Kotlin.
• arturbosch/detekt - Static code analysis for Kotlin.
• cypressious/KotlinW - A small wrapper for the Kotlin compiler that can be used to execute .kts scripts.

Desktop ^{Back ⇈}

• edvin/tornadofx - Lightweight JavaFX Framework for Kotlin/

Http Clients ^{Back ⇈}

• kittinunf/Fuel - The easiest HTTP networking library for Kotlin/Android.
• jkcclemens/khttp - Kotlin HTTP requests library.

Editors ^{Back ⇈}

• JetBrains/intellij-community - IntelliJ IDEA Community Edition
• alexmt/atom-kotlin-language - Adds syntax highlighting to Kotlin files in Atom
• vkostyukov/kotlin-sublime-package - A Sublime Package for Kotlin.
• udalov/kotlin-vim - Kotlin Syntax Highlighter for Vim.
• sargunster/kotlin-textmate-bundle - Kotlin bundle for TextMate.
• ice1000/NppExtension - Kotlin Language extension for Notepad++
• ftomassetti/kanvas - A truly hackable editor: simple, lightweight, understandable.
• mathiasfrohlich/vscode-kotlin - Kotlin language support for VS Code.

Syntax Highlighters ^{Back ⇈}

• jneen/rouge - A pure-ruby code highlighter that is compatible with pygments. (wip)
• isagalaev/highlight.js - Javascript syntax highlighter. (out-of-date)
• github/linguist - For Ruby/Github, uses Sublime package
• birkenfeld/pygments-main - Python syntax highlighter.
• cansik/kotlin-latex-listing - A syntax highlighting template for the Kotlin language in LaTeX listings.

Game Development ^{Back ⇈}

• czyzby/ktx - Kotlin utilities for LibGDX applications.
• AlmasB/FXGL - JavaFX 8 Game Library written in Java + Kotlin
• icela/FriceEngine - Make game developing easy again!

Misc ^{Back ⇈}

• Kotlin/kotlinx.reflect.lite - Lightweight library allowing to introspect basic stuff about Kotlin symbols.
• puniverse/quasar - Fibers, Channels and Actors for the JVM.
• MehdiK/Humanizer.jvm - Humanizer.jvm meets all your jvm needs for manipulating and displaying strings, enums, dates, times, timespans, numbers and quantities.
• mplatvoet/kovenant - Promises for Kotlin and Android
• kohesive/klutter - A mix of random small libraries for Kotlin, the smallest reside here until big enough for their own repository.
• kohesive/solr-undertow - Solr Standalone Tiny and High performant server.
• leprosus/kotlin-hashids - Library that generates short, unique, non-sequential hashes from numbers.
• mplatvoet/progress - Progress for Kotlin.
• sargunster/CakeParse - Simple parser combinator library for Kotlin.
• sargunster/KtUnits - Tiny unit conversion library for Kotlin.
• hotchemi/khronos - An intuitive Date extensions in Kotlin.
• yole/kxdate - Kotlin extensions for Java 8 java.time API
• ingokegel/jclasslib - jclasslib bytecode viewer is a tool that visualizes all aspects of compiled Java class files and the contained bytecode.
• holgerbrandl/krangl - krangl is a {K}otlin library for data w{rangl}ing
• debop/koda-time - Joda Time Extensions in Kotlin. (From Java 8 use java.time instead)
• MicroUtils/kotlin-logging - Lightweight logging framework for Kotlin. Used as a wrapper for slf4j with Kotlin extensions.
• cesarferreira/kotlin-pluralizer - Kotlin extension to pluralize and singularize strings.
• JoelW-S/groothy - Kotlin implementation of Groovy Truth.
• Jire/Strukt - Value types on the JVM, today!
• soywiz/korio - Korio: Kotlin cORoutines I/O: Streams + Async TCP Client/Server + Virtual File System for JVM, Node.JS and Browser.
• soywiz/korim - Korim: Kotlin cORoutines IMaging utilities depending on Korio.
• soywiz/korui - Korui: Kotlin cORoutines User Interfaces: korio + kimage + korui
• moshbit/Kotlift - Kotlift is the first source-to-source language transpiler from Kotlin to Swift.
• consoleau/kassava - This library provides some useful kotlin extension functions for implementing toString() and equals() without all of the boilerplate.
• moove-it/fakeit - Generates realistic fake data — like names, emails, dates, countries — to be used in your Android development environment.
• czyzby/kotlin-times - A simple utility library for readable loops.
• phxql/aleksa - Aleksa is a small framework for writing Alexa Skills in Kotlin.
• cretz/asmble - Compile WebAssembly to JVM and other WASM tools.

Extensions ^{Back ⇈}

• Kotlin/kotlinx.support - Extension and top-level functions to use JDK7/JDK8 features in Kotlin 1.0.

Configuration ^{Back ⇈}

• npryce/konfig - A Type Safe Configuration API for Kotlin
• mariomac/kaconf - KickAss Configuration. An annotation-based configuration system for Java and Kotlin
• config4k/config4k - A Kotlin wrapper for Typesafe Config
• jdiazcano/cfg4k - Flexible and easy to use config library written in kotlin.

Graphics ^{Back ⇈}

• kotlin-graphics/glm - g-truck glm port, opengl mathematics library
• kotlin-graphics/kotlin-unsigned - Unsigned operators and boxed types (Ubyte, Uint, Ulong and Ushort) for unsigned support.
• kotlin-graphics/gli - g-truck gli port, image library
• kotlin-graphics/uno-sdk - Unofficial OpenGL SDK
• kotlin-graphics/ovr - Oculus binding
• kotlin-graphics/openvr - OpenVR binding
• java-graphics/assimp - Open Asset Import Library port
• GlimpseFramework/glimpse-framework - OpenGL made simple.
• java-opengl-labs/modern-jogl-examples - port of 'Learning Modern 3D Graphic Programming' by J.L.McKesson (jogl)
• java-opengl-labs/learn-OpenGL - port of https://learnopengl.com/ tutorial (lwjgl)

Data Science ^{Back ⇈}

• ligee/kotlin-jupyter - Kotlin kernel for Jupyter/iPython.
• thomasnield/kotlin-statistics - Advanced math and statistical extensions for Kotlin.
• holgerbrandl/krangl - krangl is a {K}otlin library for data w{rangl}ing.
• kyonifer/golem - Golem is a scientific environment for Kotlin that emphasizes language/platform interop, performance, and flexibility.
• MarcinMoskala/KotlinDiscreteMathToolkit - Set of extensions for Kotlin that provides Discrete Math functionalities as an Kotlin extension functions.

Command Line Interface ^{Back ⇈}

• leprosus/kotlin-cli - Kotlin-CLI - command line interface options parser for Kotlin.
• jimschubert/kopper - A simple Kotlin option parser
• xenomachina/kotlin-argparser - Easy to use and concise yet powerful and robust command line argument parsing for Kotlin.

Projects ^{Back ⇈}

Web ^{Back ⇈}

• sdeleuze/spring-boot-kotlin-demo - Basic Spring Boot app in Kotlin.
• IRus/kotlin-dev-proxy - Simple server for proxy requests and host static files written in Kotlin, Spark Java and Apache HttpClient.
• ratpack/example-ratpack-gradle-kotlin-app - An example of a Kotlin Ratpack app built with Gradle.
• mariomac/codebuilder - Demo app about asynchronous architectures for long-response-time web applications.
• rocketraman/kotlin-web-hello-world - This project shows how to do a web-based "Hello World!" with Kotlin in combination with various JVM - based web frameworks.
• ivanpopelyshev/vertx-facebook-messenger - Seed project for facebook messenger bots. Vertx, Kotlin.
• corda/corda - Corda is a distributed ledger platform designed to record, manage and automate legal agreements between business partners.
• spolnik/JAlgoArena - JAlgoArena is a highly scalable programming contest platform which you can host on own infrastructure. It allows to define new problems and solve them in Kotlin and Java.
• mixitconf/mixit - MiXiT website
• derveloper/kiny - Your super simple private serverless service running your kotlin functions like AWS lambda.

Build tools ^{Back ⇈}

• cbeust/kobalt - Build system inspired by Gradle.
• gradle/gradle-script-kotlin - Kotlin language support for Gradle build scripts.
• nebula-plugins/nebula-kotlin-plugin - Provides the Kotlin plugin via the Gradle plugin portal, automatically depends on the standard library, and allows Kotlin library versions to be omitted.
• pubref/rules_kotlin - Bazel rules for Kotlin.

Misc ^{Back ⇈}

• brikk/brikk - Brikk dependency manager (Kotlin, KotlinJS, Java, ...).
• lice-lang/lice - A Lisp-like language's interpreter written in Kotlin
• sureshg/InstallCerts - Create a PKCS12 TrustStore by retrieving server certificates.

Desktop ^{Back ⇈}

• ice1000/Dekoder - A kotlin music player, materially designed.

Examples ^{Back ⇈}

• Kotlin/kotlin-koans - Kotlin Koans are a series of exercises to get you familiar with the Kotlin Syntax.
• JetBrains/kotlin-examples - Various examples for Kotlin.
• JetBrains/swot - Identify email addresses or domains names that belong to colleges or universities. Help automate the process of approving or rejecting academic discounts.
• robfletcher/midcentury-ipsum - Swingin’ filler text for your jet-age web page.
• robfletcher/lazybones-kotlin - The Lazybones app migrated to Kotlin as a learning exercise.
• wangjiegulu/KotlinAndroidSample - Android sample with kotlin.
• dodyg/Kotlin101 - 101 examples for Kotlin Programming language.
• dkandalov/kotlin-99 - Solve 99 problems with Kotlin!
• dkandalov/rosettacode-kotlin - Repository with source code from RosettaCode
• sanity/pairAdjacentViolators - A Kotlin implementation of the Pair Adjacent Violators algorithm for isotonic regression.

Idea Plugins ^{Back ⇈}

• Vektah/CodeGlance - Intelij IDEA plugin for displaying a code mini-map similar to the one found in Sublime.
• intellij-rust/intellij-rust - Rust IDE built using the IntelliJ Platform.
• dkandalov/activity-tracker - Plugin for IntelliJ IDEs to track and record user activity.

Android ^{Back ⇈}

Libraries ^{Back ⇈}

• Kotlin/anko - Pleasant Android application development.
• JakeWharton/kotterknife - View injection library for Android.
• MarcinMoskala/ActivityStarter - Activity starter generator and arguments injection library for Android.
• MarcinMoskala/KotlinPreferences - Kotlin Android Library, that makes preference usage in Kotlin simple and fun.
• MarcinMoskala/PreferenceHolder - Kotlin Android Library, that makes preference usage in Kotlin simple and fun using object with fields binded to SharedPreferences.
• nsk-mironov/kotlin-jetpack - A collection of useful extension methods for Android.
• pawegio/KAndroid - Kotlin library for Android providing useful extensions to eliminate boilerplate code.
• chibatching/Kotpref - Android SharedPreference delegation for Kotlin.
• TouK/bubble - Library for obtaining screen orientation when orientation is blocked in AndroidManifest.
• ragunathjawahar/kaffeine - Kaffeine is a Kotlin-flavored Android library for accelerating development.
• mcxiaoke/kotlin-koi - Koi, a lightweight kotlin library for Android Development.
• BennyWang/KBinding - Android View Model binding framework write in kotlin, base on anko, simple but powerful.
• inaka/KillerTask - Android AsyncTask wrapper library, written in Kotlin.
• grandstaish/paperparcel - Boilerplate reduction library written specifically for working with Kotlin data classes on Android.
• andre-artus/AnvilKotlin - Minimal UI library for Android inspired by React.
• mathcamp/fiberglass - Easy lightweight SharedPreferences library for Android in Kotlin using delegated properties.
• nitrico/LastAdapter - Don't write a RecyclerView adapter again. Not even a ViewHolder!.
• denisidoro/krouter - A lightweight Android activity router.
• metalabdesign/AsyncAwait - async/await for Android built upon coroutines introduced in Kotlin 1.1.
• jupf/staticlog - StaticLog - super lightweight static logging for Kotlin, Java and Android.
• zserge/anvil - Minimal UI library for Android inspired by React.
• DanielMartinus/Stepper-Touch - Fun playful Android stepper widget for counting, written in Kotlin.
• GlimpseFramework/glimpse-framework-android - OpenGL made simple.
• infotech-group/android-drawable-dsl - DSL for constructing the drawables in Kotlin instead of in XML.

Frameworks ^{Back ⇈}

• nekocode/kotgo - An android development framwork on kotlin using MVP architecture.
• lightningkite/kotlin-core - A full framework for making Android apps. Based on Anko and Kotson.

Projects ^{Back ⇈}

• antoniolg/Bandhook-Kotlin - A showcase music app for Android entirely written using Kotlin language.
• antoniolg/Kotlin-for-Android-Developers - Companion App for the book "Kotlin Android Developers".
• damianpetla/kotlin-dagger-example - Example of Android project showing integration with Kotlin and Dagger 2.
• dodyg/AndroidRivers - RSS Readers for Android.
• MakinGiants/banjen-android-banjo-tuner - App that plays sounds helping to tune a brazilian banjo.
• inaka/kotlillon - Android Kotlin Examples.
• MakinGiants/todayhistory - App that shows what happened today in history.
• RxKotlin/Pocket - This app help user to save links easily, and can export to Evernote as weekly.
• SidneyXu/AndroidDemoIn4Languages - Comparison between Java, Groovy, Scala, Kotlin in Android Development.
• inorichi/tachiyomi - Free and open source manga reader for Android.
• ziggy42/Blum-kotlin - A simple android Twitter client written in Kotlin
• TwidereProject/Twidere-Android - Material Design ready and feature rich Twitter app for Android 4.0+

Extensions ^{Back ⇈}

• ajalt/timberkt - Easy Android logging with Kotlin and Timber.

Tools ^{Back ⇈}

• kiruto/debug-bottle - Debug Bottle is an Android runtime debug / develop tools written using kotlin language.

Kotlin JavaScript ^{Back ⇈}

JavaScript ^{Back ⇈}

• andrewoma/reakt - Reakt is a Kotlin wrapper for facebook's React library.
• pixijs/pixi-native - The aim of this project is to provide a fast lightweight 2D library that works across all devices.
• shafirov/klogging - Kotlin logging, both js and jvm.
• stangls/kotlin-js-jquery - A small framework for writing client -side web -applications in Kotlin.
• Kotlin/kotlin-fullstack-sample - Kotlin Full-stack Application Example.
• danfma/kodando - Kotlin JS bindings and libraries.

Frontend ^{Back ⇈}

• olegcherr/Aza-Kotlin-CSS - Kotlin DSL for CSS

Game Development ^{Back ⇈}

• perses-games/kudens - Develop browser games in Kotlin

Build Tools ^{Back ⇈}

• Kotlin/kotlin-frontend-plugin - Gradle Kotlin plugin for frontend development.
• huston007/kotlin-loader - Kotlin webpack loader.

Integration ^{Back ⇈}

• kotlin/ts2kt - Converter of TypeScript definition files to Kotlin declarations (stubs).

Kotlin Native ^{Back ⇈}

Projects ^{Back ⇈}

• JetBrains/kotlin-native - Kotlin/Native is a LLVM backend for the Kotlin compiler, runtime implementation and native code generation facility using LLVM toolchain.
• perses-games/konan-sfml - Kotlin native with SFML example

Kotlin User Groups ^{Back ⇈}

Europe ^{Back ⇈}

• Kotlin Developers in Manchester - United Kingdom
• Belarus Kotlin User Group - Belarus
• Kotlin User Group Munich - Deutschland
• Lyon Kotlin User Group - France
• KotlinMAD - Spain
• Kotlin Yorkshire Meetup Group - United Kingdom
• Kotlin London - United Kingdom
• Kotlin User Group Berlin - Germany
• Kotlin User Group Cologne - Germany

America ^{Back ⇈}

• Bay Area Kotlin User Group - USA
• Chicago Kotlin Users Group - USA
• Kotlin Group of Boulder - USA
• New York Kotlin Meetup - USA

Asia ^{Back ⇈}

• Japan Kotlin User Group - Japan
• Korean Kotlin User Group - Korea

Australia ^{Back ⇈}

• Brisbane Kotlin User Group - Australia
• Sydney Kotlin User Group - Australia

Articles, Blog Posts ^{Back ⇈}

April 2017 ^{Back ⇈}

• The Rise and Fall of JVM Languages - Andrew Binstock
• Kotlin/Native Tech Preview: Kotlin without a VM - Andrey Breslav
• Kotlin 1.1 is also for Android Developers - Roman Belov
• Kotlin 1.1 Event Report - Alina Dolgikh
• Use Kotlin with npm, webpack and react - Dmitry Jemerov
• Kotlin 1.1.2 is out - Dmitry Jemerov
• Bytecode behind coroutines in Kotlin - Eugene Petrenko
• How we made Basecamp 3’s Android app 100% Kotlin - Dan Kim

March 2017 ^{Back ⇈}

• Kotlin 1.1 Released with JavaScript Support, Coroutines and more - Roman Belov
• Kotlin 1.1 Event - Alina Dolgikh
• Gradle Script Kotlin 0.8.0 Release Notes - Rodrigo B. de Oliveira
• Announcing KotlinConf - Hadi Hariri
• Kotlin 1.1.1 is out - Dmitry Jemerov
• Kotlin 1.0.7 is out - Dmitry Jemerov
• Kotlin 1.1 Event in Your City - Alina Dolgikh
• Reactor Kotlin Extensions 1.0.0.M1 released - Sébastien Deleuze

February 2017 ^{Back ⇈}

• Kotlin 1.1 Beta 2 is here - Dmitry Jemerov
• The Design and Construction of Modern Build Tools - Cédric Beust
• Using Kotlin type-safe builders to create a DSL for Forms - Giacomo Bresciani
• Creating a self-contained Kotlin program using Avian - Miguel Castiblanco
• Our first book about Kotlin is out - Dmitry Jemerov
• Kotlin 1.1 Release Candidate is Here - Mikhail Glukhikh

January 2017 ^{Back ⇈}

• Why I prefer Kotlin - Graham Cox
• Leveraging TornadoFX to the fullest - Edvin Town
• How I built my first Kotlin-VertX-Hibernate stack - Jan Vladimir Mostert
• Kanvas: generating a simple IDE from your ANTLR grammar - Federico Tomassetti
• Introducing Kotlin support in Spring Framework 5.0 - Sébastien Deleuze
• I wrote my website in Kotlin - Lewis Rhine
• Corda: Kotlin - Mike Hearn
• Kotlin 1.1 Beta Is Here! - Andrey Breslav
• Experimental status of coroutines in 1.1 and related compatibility concerns - Andrey Breslav
• Kotlin 1.1: What’s coming in the standard library - ilya.gorbunov
• Announcing the Support Program for Kotlin User Groups and Events - Alina Dolgikh

December 2016 ^{Back ⇈}

• Data Binding in Anko - Lewis Rhine
• Upgrade your workflow with 0-installation kotlin scriptlets - Holger Brandl
• Kotlin: как сделать жизнь Java-разработчика легче? - Stanislav Sinitsky, Alexander Mikhalchenko
• Kotlin: How to Make a Java Developer's Life Easier? - Stanislav Sinitsky, Alexander Mikhalchenko
• Thinking Functionally - Lewis Rhine
• Building microservices with Kotlin and Spring Boot - Gabriel Francisco
• Kotlin 1.1-M04 is here! - Ilya Chernikov
• Kotlin in Practice with Spring Boot and Vaadin - Philipp Hauer
• Concurrency Primitives in Kotlin - Egor Andreevici
• Write a lightweight, cross-platform HTML5 desktop app with Kotlin - Lorenzo Angelini
• Kotlin is cheating on me... - Andrea Franceschini
• The Reactive Scrabble benchmarks - Dávid Karnok
• Kotlin 1.0.6 is here! - Yan Zhulanow
• Kotlin без магии - Mike Gorunov
• Kotlin, rockin’ in production - Nabeel Ali Memon

November 2016 ^{Back ⇈}

• Our Experiment Building a Multiselection Solution for Android in Kotlin - Artem Kholodnyi
• Quick dive in Kotlin extensions - Piotr Ślesarew
• Беглый взгляд на Async-Await в Android - Макс Ровкин
• Kotlin 1.0.5 is here - Dmitry Jemerov
• Погружение в Async-Await в Android - Макс Ровкин
• Why You Must Try Kotlin For Android Development ? - Amit Shekhar
• 400% faster layouts with Anko - Simon Vergauwen
• A clean status bar with Android System UI and QuickDemo - David Schreiber‑Ranner
• Getting started with Kotlin and third-party libraries Glide, Dagger 2, Retrofit 2, Realm, MVP and RxJava on Android - Yaroslav Polyakov
• Kotlin Configuration Scripts: An Introduction - Hadi Hariri
• App State as a tree - Lewis Rhine
• Exploring an Either Monad in Kotlin - Alex Hart
• Kotlin 1.1-M03 is here! - Ilya Chernikov
• 5 small things you probably don’t know about Kotlin - Piotr Ślesarew
• Non-volatile vs volatile captured refs by default - Roman Elizarov
• Solutions to multiple inheritance in Kotlin - Renato Athaydes
• Kotlin ternary operator - naixx
• Using the Kotlin Language with Apache Spark - Thomas Nield

October 2016 ^{Back ⇈}

• Mocking Kotlin with Mockito - Hadi Hariri
• Extension Functions Can Be Utility Functions - Duncan McGregor
• More Kotlin Extension Fun - Duncan McGregor
• PultusORM : Sqlite ORM for Kotlin - Sakib Sami
• Experimenting with “mutation testing” and Kotlin - Ian Clarke
• Taking Kotlin for a ride - Hadi Tok
• Extension functions for more consistent APIs - Nicolas Fränkel
• A new hope for the JVM: Kotlin - Giacomo Bresciani
• Swift vs Kotlin for real iOS/Android apps - Angel G. Olloqui
• Functions as Data - Mark Galea
• Kotlin 1.1-M02 is here! - Denis Zharkov
• DSL builder in Kotlin - Piotr Ślesarew
• The Road to Gradle Script Kotlin 1.0 - Rodrigo B. de Oliveira
• Kotlin: How to Make Your Java Code Base Cleaner and More Readable - Kenneth Ford
• Composing functions in Kotlin with extensions and operators - Daniele Conti
• Zero boilerplate delegation in Kotlin - Piotr Ślesarew
• A Whirlwind Tour of the Kotlin Type Hierarchy - Nat Pryce
• Kotlin for Data Science - Thomas Nield
• Easy DSL design with Kotlin - Nicolas Fränkel

September 2016 ^{Back ⇈}

• Kotlin census: call to action - Roman Belov
• Building DSL Instead of an IDE Plugin - Eugene Petrenko
• Building a compiler for your own language: validation - Federico Tomassetti
• A Developer’s Look at Kotlin - David Bolton
• Crafting Log4j Configuration DSL - Eugene Petrenko
• Kotlin vs Java: Compilation speed - AJ Alt
• Kotlin NetBeans plugin beta is out! - Dmitry Jemerov
• The power of templating in a DSL - Eugene Petrenko
• Kotlin 1.0.4 is here - Dmitry Jemerov
• An in-depth look at Kotlin’s initializers - AJ Alt
• Why Kotlin is the next big thing for Java developers - Nitin Y
• Kotlin in Production - What works, Whats broken - DripStat

August 2016 ^{Back ⇈}

• Calling on EAPers - Roman Belov
• More readable tests with Kotlin - Flavio
• The Kobalt diaries: Parallel builds - Cédric Beust
• Issues Faced With Kotlin During Android Development - Elisha Lye
• PaperParcel with Kotlin - Almond Joseph Mendoza
• Lessons from converting an app to 100% Kotlin - AJ Alt
• Logging in Kotlin & Android: AnkoLogger vs kotlin-logging - osha1
• The Next Language You Thought You Didn’t Need - Jay Dellinger
• Decision Trees with Kotlin - Mark Galea
• Kotlin: The Good, The Bad, and The Ugly - AJ Alt
• Scala vs Kotlin: inline and infix - Nicolas Fränkel
• Improved Pattern Matching in Kotlin - Jacob Zimmerman
• Kotlin: val does not mean immutable, it just means readonly, yeah - Artem Zinnatullin
• Getting started with Kotlin in Android development - Dmitry Chyrta
• Ten Kotlin Features To Boost Android Development - Ivan Kušt
• Natural testing with Kotlin - Vardan Torosyan
• Writing Kotlin Idiomatic Code - Denis Trailin

July 2016 ^{Back ⇈}

• Data Driven Testing with Spek - Konstantin Semenov
• Never say final: mocking Kotlin classes in unit tests - Danny Preussler
• Scala vs Kotlin: Pimp my library - Nicolas Fränkel
• First glimpse of Kotlin 1.1: Coroutines, Type aliases and more - Andrey Breslav
• Scala vs Kotlin: Operator overloading - Nicolas Fränkel
• Things We've Learned During Coolcal Development in Kotlin - Przemek Dąbrowski
• JUnit 5 with Spring Boot (plus Kotlin) - Mike Plummer
• UI Testing: separating Assertions from Actions with Kotlin DSL - Artem Zinnatullin
• KotlinLifeguard #1 - Daniel Gomez Rico

June 2016 ^{Back ⇈}

• Where We Stand & What's Next for Kotlin - Andrey Breslav
• What’s in store for Kotlin this year - Gabriela Motroc
• Kotlin Eclipse Plugin 0.7 Is Here! - Nikolay Krasko
• From Groovy to Kotlin - Dmitry Kandalov
• When Kotlin met Gradle - Gabriela Motroc
• Kotlin 1.0.3 EAP - Pavel Talanov
• Архитектор Kotlin: «Язык программирования — рабочий инструмент. Если никогда их не менять, можно отстать от жизни» - yankoits
• Meet the Kotlin Team at Gradle Summit - Dmitry Jemerov
• News from KotlinTest - medium
• Kotlin Night in San Francisco Recordings - Roman Belov
• Kotlin Native - Mike Hearn
• Kotlin null safety and its performance considerations -- part 1 - Konrad Kamiński
• Ad-hoc polymorphism in Kotlin - Cédric Beust
• How to get IDEA to detect kotlin generated sources using Gradle - Nish Tahir
• Kotlin 1.0.3 Is Here! - Roman Belov

May 2016 ^{Back ⇈}

• JMock and Kotlin - Duncan McGregor
• Testing in Kotlin - Stephen Samuel
• Kosent - Duncan McGregor
• Kotlin 1.0.2 is Here - Dmitry Jemerov
• Gradle Elevates the Build to First-Class Programming With Kotlin Language - BusinessWire
• Kotlin Meets Gradle - Chris Beams
• Gradle Meets Kotlin - Hadi Hariri
• Kotlin, dragging java into the modern world - Tim Gray
• Neural Network in Kotlin - Cédric Beust
• Some of my favorite Kotlin features (that we use a lot in Basecamp) - Dan Kim
• Neural Networks in Kotlin (part 2) - Cédric Beust

April 2016 ^{Back ⇈}

• Experimental: Kotlin and mutation testing - Nicolas Frankel
• Exploring Delegation in Kotlin - @codemonkeyism
• Kotlin’s killer features - Jasper Sprengers
• Kotlin: Practical Experience - Allen Wallis
• Kotlin Digest 2016.Q1 - Roman Belov
• Android And Kotlin - Bartosz Kosarzycki
• The Kobalt diaries: Automatic Android SDK management - Cédric Beust
• Keddit — Part 7: Infinite Scroll: Higher-Order functions & Lambdas - Juan Ignacio Saravia
• Making Android Development Easier - Maan Najjar
• Kotlin for Scala Developers - Stephen Samuel
• Kotlin Post-1.0 Roadmap - Dmitry Jemerov
• Few thoughts about Kotlin and why I like it so much - Dhananjay Nene
• Performance comparison - building Android UI with code (Anko) vs XML Layout. - Andrew Drobyazko
• Code improvements with Kotlin - Nicolas Frankel
• Exercises in Kotlin: Part 1 - Getting Started - Dhananjay Nene
• Exercises in Kotlin: Part 2 - High level syntax and Variables - Dhananjay Nene
• Kotlin + Android First Impressions - Keyhole Software
• Exercises in Kotlin: Part 3 - Functions - Dhananjay Nene
• JDK7/8 features in Kotlin 1.0 - Ilya Gorbunov
• Writing Concise Code With Kotlin - Peter Sommerhoff
• Exercises in Kotlin: Part 4 - Control flows and return - Dhananjay Nene
• Exercises in Kotlin: Part 5 - Classes - Dhananjay Nene

March 2016 ^{Back ⇈}

• Developing on Android sucks a lot less with Kotlin - Kuno Qing
• Kotlin & Android: A Brass Tacks Experiment, Part 5 - Doug Stevenson
• Kotlin для начинающих - @Devcolibri
• Kotlin: a new JVM language you should try - Rafal Gancarz
• Видео со встречи JUG.ru с разработчиками Kotlin - JetBrains
• Building a Kotlin project 1/2 - Ciro Rizzo
• Building a Kotlin project 2/2 - Ciro Rizzo
• Kotlin Month Post 2: Inheritance and Defaults - Jacob Zimmerman
• Solving the Josephus problem in Kotlin - Nicolas Franke
• A DSL Workbench with Gradle and Kotlin - Eugene Petrenko
• Kotlin & Android: A Brass Tacks Experiment, Part 6 - Doug Stevenson
• Getting Started with Kotlin and Anko on Android - Donn Felker
• SDCast #41: в гостях Андрей Бреслав, руководитель проекта Kotlin в компании JetBrains - Андрей Бреслав, Константин Буркалев
• Why I don't want to use Kotlin for Android Development yet - Artem Zinnatullin
• Feedback on the Josephus problem - Nicolas Frankel
• Kotlin Month Post 3: Safety - Jacob Zimmerman
• Kotlin & Android: A Brass Tacks Experiment Wrap-Up - Doug Stevenson
• Kotlin : Retrofit + RxAndroid + Realm - Ahmed Rizwan
• Kotlin recipes for Android (I): OnGlobalLayoutListener - Antonio Leiva
• Kotlin 1.0.1 is Here! - Andrey Breslav
• Using Kotlin For Tests in Android - Sergii Zhuk
• Kotlin Educational Plugin - Roman Belov
• Kotlin Month Post 4: Properties - Jacob Zimmerman
• Algebraic Data Types In Kotlin - Mike Gehard
• A Geospatial Messenger with Kotlin, Spring Boot and PostgreSQL - Sébastien Deleuze
• Андрей Бреслав и Дмитрий Жемеров о Kotlin 1.0 на jug.msk.ru - Дмитрий Белобородов
• How to Hot Deploy Java/Kotlin classes in Dev - Jan Vladimir Mostert
• Writing a RESTful backend using Kotlin and Spring Boot - Dimitar Kotevski
• Creating an AndroidWear watchface using Kotlin - Roberto Perez
• Rest API plumbing with kotlin - Gaetan Zoritchak
• Kotlin’s Android Roadmap - Dmitry Jemerov
• Ubuntu Make 16.03 Released With Eclipse JEE And IntelliJ IDEA EAP Support, More - Alin Andrei
• 10 Features I Wish Java Would Steal From the Kotlin Language - Lukas Eder

February 2016 ^{Back ⇈}

• Kotlin & Android: A Brass Tacks Experiment, Part 2. - Doug Stevenson
• Kotlin & Android: A Brass Tacks Experiment, Part 1. - Doug Stevenson
• Scala vs Kotlin - Lionel
• 10 Kotlin Tutorials for Beginners: Dive Into Kotlin Programming - Peter Sommerhoff
• Kotlin Coding - Ciro Rizzo
• Podcast Разбор Полетов: Episode 102 — Kotlin, тесты и здоровый сон. - Dmitry Jemerov, Viktor Gamov, Alexey Abashev, Anton Arphipov, Dmitry Churbanov, Anton Arhipov
• Kotlin 1.0 Release Candidate is Out! - Andrey Breslav
• Kotlin + RxJava = Functional Powerhouse - Thomas Nield
• Kotlin & Android: A Brass Tacks Experiment, Part 4 - Doug Stevenson
• The Journey of a Spring Boot application from Java 8 to Kotlin: The Application Class - Mike Gehard
• Developing Spring Boot applications with Kotlin. - Sébastien Deleuze
• Kotlin 1.0 Released: Pragmatic Language for JVM and Android - Andrey Breslav
• JVM Newcomer Kotlin 1.0 is GA - Lucy Carey
• Релиз Kotlin 1.0, языка программирования для JVM и Android. - Open Source
• Kotlin 1.0: The good, the bad and the evident. - Gabriela Motroc
• Kotlin & Android: A Brass Tacks Experiment, Part 3. - Doug Stevenson
• Kotlin 1.0. Задай вопрос команде. - Роман Белов
• DevZen Podcast: Kotlin и Vulkan 1.0 — Episode 0080. - DevZen Podcast
• Радио-Т 484 - Umputun, Bobuk, Gray, Ksenks
• Немного о Kotlin. - @fogone
• Weekend resources for new Kotlin programmers - Joey deVilla
• Using Mockito for unit testing with Kotlin (1/x) - MAKINGIANTS
• The Kobalt diaries: testing - Cédric Beust
• Kotlin — Love at first line - Dimitar Kotevski
• A Very Peculiar, but Possibly Cunning Kotlin Language Feature. - Lukas Eder
• More Kotlin Features to Love - Jim Baca
• Kotlin: Easily storing a list in SharedPreferences with Custom Accessors - Dennis Lysenko
• The Journey of a Spring Boot application from Java 8 to Kotlin, part 2: Configuration Classes - Mike Gehard
• Kotlin 1.0 is finally released! - Jacob Zimmerman
• An Introduction to Kotlin - Mike Plummer
• Kotlin - 2 Years On - James Hughes
• Kotlin Month Post 1: Assorted Features - Jacob Zimmerman
• Kotlin and Ceylon - Elvira
• Как себе выстрелить в ногу в Kotlin - @ov7a
• The Journey of a Spring Boot application from Java 8 to Kotlin, part 3: Data Classes - Mike Gehard

January 2016 ^{Back ⇈}

• Kotlin XML Binding - Eugene Petrenko
• Playing with Spring Boot, Vaadin and Kotlin - Nicolas Frankel
• Kotlin, the somewhat obscure modern Android-friendly programming language - Brandon Kase
• Android development with Kotlin - Fernando Ramirez
• Mimicking Kotlin Builders in Java and Python - Jacob Zimmerman
• My Kotlin Adventure - Ciro Rizzo
• KillerTask, the solution to AsyncTask implementation - Fernando Ramirez

December 2015 ^{Back ⇈}

• Kotlin for Java Developers: 10 Features You Will Love About Kotlin - Peter Sommerhoff
• Early Impressions of Kotlin - Nat Pryce

November 2015 ^{Back ⇈}

• Setting up Kotlin with Android and tests - Laura Kogler

October 2015 ^{Back ⇈}

• Exploring the Kotlin standard library - Cédric Beust

September 2015 ^{Back ⇈}

• Kotlin ❤ FP - Mike Hearn

August 2015 ^{Back ⇈}

• Building APIs on the JVM Using Kotlin and Spark – Part 1 - Travis Spencer
• Production Ready Kotlin - Jayson Minard

July 2015 ^{Back ⇈}

• Why Kotlin is my next programming language - Mike Hearn
• Android + Kotlin = <3 - Michael Sattler
• Без слайдов: интервью с Дмитрием Жемеровым из JetBrains - Алексей Фёдоров

June 2015 ^{Back ⇈}

• Quasar and Kotlin - a Powerful Match - Fabio
• RxAndroid and Kotlin (Part 1) - Ahmed Rizwan
• Exploring Kotlin - Peter Ledbrook

December 2014 ^{Back ⇈}

• Non-trivial constructors in Kotlin - Alex Shabanov

April 2013 ^{Back ⇈}

• The Advent of Kotlin: A Conversation with JetBrains' Andrey Breslav - Janice J. Heiss

February 2013 ^{Back ⇈}

• Exploring the Kotlin Standard Library - Part 3 - Jamie McCrindle

January 2013 ^{Back ⇈}

• Exploring the Kotlin Standard Library - Part 1 - Jamie McCrindle
• The Adventurous Developer’s Guide to JVM languages – Kotlin - Simon Maple
• Exploring the Kotlin Standard Library - Part 2 - Jamie McCrindle

Videos ^{Back ⇈}

April 2017 ^{Back ⇈}

• The Future of Kotlin: How agile can language development be? - Andrey Breslav

December 2016 ^{Back ⇈}

• Taking Kotlin to production, Seriously - Haim Yadid
• Functional Programming in Kotlin with funKTionale (Video) - Mario Arias
• Revisiting Types In Kotlin - Francisco Estevez
• Costruiamo un treno in Kotlin - Francesco Vasco
• Kotlin: Будущие изменения и текущие мифы - Android в Лицах

November 2016 ^{Back ⇈}

• Kotlin in Real Projects - Anton Keks
• 10 Kotlin Tricks in 10(ish) Minutes - Jake Wharton
• Kotlin Night London - JetBrains
• Redux for Android using Kotlin - Nevin Chen
• Code Swarm for Kotlin - Landon Wilkins
• Developing a Geospatial Webservice with Kotlin and Spring Boot - Sébastien Deleuze

October 2016 ^{Back ⇈}

• Better Android Development with Kotlin and Gradle - Ty Smith
• Christina Lee: Kotlin in Production - Android Dialogs
• Spring Tips: the Kotlin Programming Language - Josh Long
• Spring Boot and Kotlin, a match made in Heaven - Nicolas Frankel

September 2016 ^{Back ⇈}

• Kotlin - Ready for Production - Hadi Hariri

August 2016 ^{Back ⇈}

• Andrey Breslav: Kotlin Coroutines, JVMLS 2016 - Andrey Breslav
• Writing Gradle Build Scripts in Kotlin - Chris Beams & Rodrigo B. de Oliveiranp

May 2016 ^{Back ⇈}

• You can do Better with Kotlin - Svetlana Isakova

April 2016 ^{Back ⇈}

• Type safe JavaFX CSS with TornadoFX - Edvin Syse

March 2016 ^{Back ⇈}

• Дмитрий Полищук - Kotlin + Android: практический ликбез - Дмитрий Полищук

January 2016 ^{Back ⇈}

• Fun with Kotlin - Eder Bastos

October 2015 ^{Back ⇈}

• Kotlin NoSQL for MongoDB in Action - Andrey Cheptsov

August 2015 ^{Back ⇈}

• JVMLS 2015 - Flexible Types in Kotlin - Andrey Breslav

December 2014 ^{Back ⇈}

• Kotlin for Java developers - Hadi Hariri

November 2014 ^{Back ⇈}

• GeeCON Prague 2014: Andrey Cheptsov - A Reactive and Type-safe Kotlin DSL for NoSQL and SQL - Andrey Cheptsov

September 2014 ^{Back ⇈}

• Kotlin vs Java puzzlers - Svetlana Isakova

Slides ^{Back ⇈}

April 2017 ^{Back ⇈}

• Future of Kotlin - How agile can language development be? - Andrey Breslav

November 2016 ^{Back ⇈}

• Kotlin Lang - Jemo Mgebrishvili
• FRP + Kotlin - Giorgio Natili

September 2016 ^{Back ⇈}

• Generating Kotlin Code for Better Refactorings, Tests, and IDE Support - Eugene Petrenko
• Functional Programming in Kotlin with funKTionale - Mario Arias

April 2016 ^{Back ⇈}

• Kotlin DSL: Anko - @maciekjanusz
• Kotlin + Android - Dmytro Danylyk

May 2015 ^{Back ⇈}

• Kotlin: New Hope in a Java 6 Wasteland - Michael Pardo

Webinars ^{Back ⇈}

November 2015 ^{Back ⇈}

• Functional Programming with Kotlin - Roman Belov

September 2015 ^{Back ⇈}

• Quasar: Efficient and Elegant Fibers, Channels and Actors - Roman Belov

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