The Kotlin Programming Language.

Square’s meticulous HTTP client for the JVM, Android, and GraalVM.

Pleasant Android application development

Framework for quickly creating connected applications in Kotlin with minimal effort

IdeaVim – A Vim engine for JetBrains IDEs

A modern JSON library for Kotlin and Java.

Koin - a pragmatic lightweight dependency injection framework for Kotlin & Kotlin Multiplatform

A modern I/O library for Android, Java, and Kotlin Multiplatform.

Kotlin/Native infrastructure

Kotlin multiplatform / multi-format serialization

gRPC and protocol buffers for Android, Kotlin, Swift and Java.

A Kotlin API for generating .kt source files.

Lightweight JavaFX Framework for Kotlin

A specification framework for Kotlin

Scripting enhancements for Kotlin

A JSON parser for Kotlin

Java & Kotlin Async DataBase Driver for MySQL and PostgreSQL written in Kotlin

A multiplatform Result monad for modelling success or failure operations.

Kotlin Full-stack Application Example

Module that adds support for serialization/deserialization of Kotlin (http://kotlinlang.org) classes and data classes.

A Kotlin web framework

SonarQube plugin for JetBrains IDEs providing code quality and security feedback directly in the IDE

Gradle Kotlin (http://kotlinlang.org) plugin for frontend development

Microservice Kontainer

Kotlin coroutine support for Spring.

async/await for Android built upon coroutines introduced in Kotlin 1.1

Kotlin DSL for Kubernetes configs

Randomly mutate JSON, XML, HTML forms, text and binary data for fuzz testing

An IntelliJ plugin that wraps text