The Kotlin Programming Language.

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

Framework for quickly creating connected applications in Kotlin with minimal effort

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

mocking library for Kotlin

Powerful, elegant and flexible test framework for Kotlin with assertions, property testing and data driven tests.

The easiest HTTP networking library for Kotlin/Android

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

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

A specification framework for Kotlin

Kotlin gRPC implementation. HTTP/2 based RPC

Kotlin Serverless Framework

JVM version of Pact. Enables consumer driven contract testing, providing a mock service and DSL for the consumer project, and interaction playback and verification for the service provider project.

A mock implementation of the AWS S3 API startable as Docker image, TestContainer, JUnit 4 rule, JUnit Jupiter extension or TestNG listener

The modelling for success/failure of operations in Kotlin and KMM (Kotlin Multiplatform Mobile)

Gradle plugin for publishing to Nexus repositories

Functional companion to Kotlin's Compiler

Kotlin DSL for Kubernetes configs

gRPC with Kotlin Coroutines

A collections of extension functions to make the JVM Future, CompletableFuture, ListenableFuture API more functional and Kotlin like.

Client for TeamCity REST API written in Kotlin

Gradle plugin for the Buf CLI

Gradle plugin that generates project metadata to META-INF/MANIFEST.MF