Awesome Kotlin

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

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Table of Contents

Links
Libraries/Frameworks
- Web
- Tests
- Dependency Injection
- Functional Programming
- JSON
- Database
- Tools
- Desktop
- Http Clients
- Editors
- Syntax Highlighters
- JavaScript
- Game Development
- Misc
- Extensions
Projects
- Web
- Build tools
- Misc
- Desktop
- Examples
- Idea Plugins
Android
- Libraries
- Frameworks
- Projects
- Extensions
- Tools
Kotlin User Groups
- Europe
- America
- Asia
Articles, Blog Posts
Webinars
- November 2015
- September 2015
Videos
Slides

Libraries/Frameworks

Web

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

Tests

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/amock - A JMock wrapper for Kotlin.

Dependency Injection

SalomonBrys/Kodein - Painless Kotlin Dependency Injection .
kohesive/injekt - (Deprecated, @see Kodein) Dependency Injection / Object Factory for Kotlin

Functional Programming

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.

JSON

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

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.

Tools

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.

Desktop

edvin/tornadofx - Lightweight JavaFX Framework for Kotlin/
griffon/griffon-kotlin-plugin - Griffon Support

Http Clients

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

Editors

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++

Syntax Highlighters

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.

JavaScript

danfma/kotlinjs-react - A react wrapper to the kotlin library.
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.
bashor/ts2kt - Converter of TypeScript definition files to Kotlin declarations (stubs)
shafirov/klogging - Kotlin logging, both js and jvm.

Game Development

czyzby/ktx - Kotlin utilities for LibGDX applications.
AlmasB/FXGL - JavaFX 8 Game Library written in Java + Kotlin

Misc

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.
leprosus/kotlin-cli - Kotlin-CLI - command line interface options parser 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
npryce/konfig - A Type Safe Configuration API for Kotlin
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

Extensions

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

Projects

Web

ssoudan/ktSpringTest - 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.

Build tools

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

brikk/brikk - Brikk dependency manager (Kotlin, KotlinJS, Java, …).

Desktop

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

Examples

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!
sanity/pairAdjacentViolators - A Kotlin implementation of the Pair Adjacent Violators algorithm for isotonic regression.

Idea Plugins

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.

Android

Libraries

Kotlin/anko - Pleasant Android application development.
JakeWharton/kotterknife - View injection library for Android
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.
graknol/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

Frameworks

nekocode/kotgo - An android development framwork on kotlin using MVP architecture.

Projects

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.