Stars
Use RPython to create a Python-like language that has native support for Effect tracking and Effect handling. A proof-of-concept experiment
AWS Emulator is a local emulator of the AWS APIs.
Community fork of AWS CloudFormation Rain, not affiliated with AWS
Community-maintained JVM marker JAR catalog for local AI models
An agent supervisor and software factory foreman powered by decision models
Compose Desktop for native target using SDL3
ZIO-first Playwright client and Scala.js browser test toolkit (Chekhov's gun)
Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.
Statically typed, purely functional effects for Python.
Agent Tools for Kotlin to make coding agents more efficient with Kotlin & Gradle
An sbt plugin to dynamically set your version from git
Composable building blocks for full-stack AWS apps — define infrastructure and runtime code together with end-to-end type safety using TypeScript, local mocking, and native client codegen for Kotli…
Official, AWS-supported MCP servers, skills, and plugins to help AI agents build on AWS
An agent runtime and tool protocol for principled agent concurrency
Java Implementation of an embedded-sass host
Turn messy, real-world HTML into clean Markdown, from every major language.
An example `wasi:http` server component written in Kotlin
Light, fluffy, and always free - The AWS Local Emulator alternative
A collection of AI agent skills useful for projects using Kotlin language
File operations and native file pickers for Kotlin Multiplatform and Compose Multiplatform: read, write, copy and list files, open and save dialogs, image compression, bookmarks. Android, iOS, macO…
Markdown renderer for Kotlin Multiplatform Projects (Android, iOS, Desktop), using Compose.
Agent Client Protocol Kotlin SDK
Java SDK for AWS Lambda Durable Functions
Plinth is an AI-native engineering toolkit for modern Java enterprise SDLC, built around reusable Commands, Agents, Skills, and MCP Servers.
A Rust framework for correct and performant distributed systems