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

Kotlin SQL Framework

RxJava bindings for Kotlin

Kotlin/Native infrastructure

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

Kotlin multiplatform / multi-format serialization

mocking library for Kotlin

Java / JavaFX / Kotlin Game Library (Engine)

Lightweight JavaFX Framework for Kotlin

API documentation engine for Kotlin

A Kotlin Multiplatform solution for working with data. Whether you’re building alone or with a team of thousands, Store can help

Using Mockito with Kotlin

The Functional toolkit for Kotlin HTTP applications. http4k provides a simple and uniform way to serve, consume, and test HTTP services.

KotlinX multiplatform date/time library

A lightweight ORM framework for Kotlin with strong-typed SQL DSL and sequence APIs.

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

Kotlin gRPC implementation. HTTP/2 based RPC

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

The idiomatic way to use atomic operations in Kotlin

Kovenant. Promises for Kotlin.

RSocket Kotlin multi-platform implementation

SpringMockK: MockBean and SpyBean, but for MockK instead of Mockito

Compose Multiplatform Desktop Application project template

DDD. Event sourcing. CQRS. REST. Modular. Microservices. Kotlin. Spring. Axon platform. Apache Kafka. RabbitMQ

SQL access DSL for Kotlin