Add asynchronous RPC services to your multiplatform applications.

The Kotlin Programming Language.

🧙‍AutoDev: The AI-powered coding wizard（AI 驱动编程助手）with multilingual support 🌐, auto code generation 🏗️, and a helpful bug-slaying assistant 🐞! Customizable prompts 🎨 and a magic Auto Dev/Testing/Do…

A Kotlin Multiplatform Client for Supabase.

HTTP client generator / KSP plugin for Kotlin Multiplatform (Android, iOS, Js, Jvm, Native, WasmJs)) using KSP and Ktor clients inspired by Retrofit https://foso.github.io/Ktorfit

very good whiteboard SDK / infinite canvas SDK

Generates Kotlin Code from OpenApi3 Specifications

Testing tools for javac and annotation processors

How do I idiomatically structure a large build with Gradle 8 or Gradle 9

The library for web and native user interfaces.

Fluent assertions for Java and Android

Lightweight static analysis for many languages. Find bug variants with patterns that look like source code.

A collection of MCP servers.

RSS reader for macOS and iOS.

A fast dependency injector for Android and Java.

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

Get up and running with OpenAI gpt-oss, DeepSeek-R1, Gemma 3 and other models.

A type-safe HTTP client for Android and the JVM

Spring Boot and Thymeleaf helpers for working with htmx

Extensions for Moshi including IR plugins, moshi-sealed, and more.

A collection of notebooks/recipes showcasing some fun and effective ways of using Claude.

SQLDelight - Generates typesafe Kotlin APIs from SQL

🥪 Sandwich is an adaptable and lightweight sealed API library designed for handling API responses and exceptions in Kotlin for Retrofit, Ktor, and Kotlin Multiplatform.

🤗 smolagents: a barebones library for agents that think in code.

Tiny is a lightweight 2D game engine that allows developers to easily create games using the Lua programming language.

Authoring GitHub Actions workflows in Kotlin. You won't go back to YAML!

TypeScript-first schema validation with static type inference

A Kotlin compiler plugin that generates equals, hashCode, and toString for plain old Kotlin objects in public APIs.

An open-source coding helper. Very friendly!