The universal configuration manager for your AI assistants. Define context once in a single ai-rulez.yml file, and use the CLI to generate synchronized instructions for Claude, Cursor, Copilot, and…

Open Source TypeScript AI Agent Framework with built-in LLM Observability

A powerful Node.js benchmark library

Property based testing framework for JavaScript (like QuickCheck) written in TypeScript

Emmett - a Node.js library taking your event-driven applications back to the future!

Industry standard API mocking for JavaScript.

json-joy is a library that implements cutting-edge real-time and collaborative editing algorithms and utilities for JSON data models, with a focus on developing the JSON CRDT (Conflict-free Replica…

🕸️ GraphQL Federation Framework for any API services such as REST, OpenAPI, Swagger, SOAP, gRPC and more...

A fast, local first, reactive Database for JavaScript Applications https://rxdb.info/

A registry of community-led codemods & code automation recipes for popular refactors, migrations, and dependency upgrades.

Testcontainers is a NodeJS library that supports tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.

A toolchain for web projects, aimed to provide functionalities to maintain them. Biome offers formatter and linter, usable via CLI and LSP.

Make your JSON data collaborative and version-controlled with CRDTs

Realtime server for reliable two-way communication to power-up any backend

Chromium for Serverless Platforms

Augment the TypeScript compiler to support extended functionality

Architecture decision record (ADR) examples for software planning, IT leadership, and template documentation

A tiny, efficient fuzzy search that doesn't suck

NodeJS library that generates Typescript or Javascript clients based on the OpenAPI specification

📦 Package Node.js applications into executable binaries 📦

A tool for exploring each layer in a docker image

A command-line benchmarking tool

The lazier way to manage everything docker

🔩 The missing TypeScript utils

Easily and securely send things from one computer to another 🐊 📦

Fast and small Node.js worker_threads and cluster worker pool

✅ タスク — The minimal task visualizer for Node.js

✍️ Fusuma makes slides with Markdown easily.

A JSON-like data structure (a CRDT) that can be modified concurrently by different users, and merged again automatically.

Open-source JavaScript charting library behind Plotly and Dash