The Kotlin Programming Language.

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

Compose Multiplatform, a modern UI framework for Kotlin that makes building performant and beautiful user interfaces easy and enjoyable.

Framework for quickly creating connected applications in Kotlin with minimal effort

Library support for Kotlin coroutines

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

A simple and modern Java and Kotlin web framework

The perfect companion for your Kotlin journey - Inspired by functional, data-oriented and concurrent programming

Kotlin multiplatform / multi-format serialization

🌈Rainbow Brackets for IntelliJ based IDEs/Android Studio/HUAWEI DevEco Studio/Fleet

Gradle plugin to create fat/uber JARs, apply file transforms, and relocate packages for applications and libraries. Gradle version of Maven's Shade plugin.

Gradle plugin to discover dependency updates

Painless Kotlin Dependency Injection

Elixir plugin for JetBrain's IntelliJ Platform (including Rubymine)

Gradle plugin that generates dependency graphs from your project.

Sample projects for Ktor

All Algorithms implemented in Kotlin

A Spark DSL in idiomatic kotlin // dependency: com.sparkjava:spark-kotlin:1.0.0-alpha

MQTT Client Examples

Jetbrains IDEs client for TabNine. Compatible with all IntelliJ-based IDEs. https://plugins.jetbrains.com/plugin/12798-tabnine

Annotations for JVM-based languages.

Scriptable, multipurpose mock server. Run standalone mock servers, or embed mocks within your tests or CI/CD pipeline.

Gradle plugin to use the error-prone compiler for Java

Static site generator for architecture models created with Structurizr DSL

Vert.x for Kotlin

A library that tests if the implementation of a REST-API meets its specification.

Reference JVM multi module project for a reactive micro service and lambda using a hexagonal architecture, DDD, Kotlin, Spring Boot, Quarkus, Lambda, Gradle.

Barber 💈 A type safe Kotlin JVM library for building up localized, fillable, themed documents using Mustache templating

PipelineKt is a kotlin library that generates Jenkinsfiles in a flexible and familiar manner

Spring Batch examples in Kotlin (from simple to advanced)