Stars
Mock everything your AI app talks to — LLM APIs, MCP, A2A, AG-UI, vector DBs, search. One package, one port, zero dependencies.
QuickJS, the Next Generation: a mighty JavaScript engine
A recreation of the Spaceworld 1997 Ocarina of Time demo
macOS and Linux VMs on Apple Silicon to use in CI and other automations
Lightweight Result type for TypeScript with generator-based composition.
Fast, accurate & comprehensive text measurement & layout
Spanish legislation as a Git repo — every law is a Markdown file, every reform a commit. 8,600+ laws.
A place to keep track of ongoing efforts to improve performance in the JS ecosystem
Example projects and templates build using Workflow DevKit
A static site generator for data apps, dashboards, reports, and more. Observable Framework combines JavaScript on the front-end for interactive graphics with any language on the back-end for data a…
A template for creating real-time, online games using TypeScript! Quickly create mmo-style games using React + Phaser for rendering, Colyseus for websockets and Electron for native builds!
Specification and documentation for the Model Context Protocol
Official repo for spec & SDK of MCP Apps protocol - standard for UIs embedded AI chatbots, served by MCP servers
UI over MCP. Create next-gen UI experiences with the protocol and SDK!
IsoCity: City building simulation game.
🔥 The API to search, scrape, and interact with the web for AI
Tower defense game that teaches cloud architecture. Build infrastructure, survive traffic, learn scaling.
A light-weight and powerful meta-prompting, context engineering and spec-driven development system for Claude Code by TÂCHES.
🔀 A Full-Featured HTTP and WebSocket Proxy for Node.js
Internal tools deployment made easy. Deploy web apps declaratively, on a single-node or on Kubernetes.
Logging that makes sense. Wide events, structured errors, zero chaos.
Browser automation CLI for AI agents
Unified utils for auto importing APIs in modules.
# Simple object hashing, serialization and comparison utils.
Automatic font fallback based on font metrics
A lightweight sandboxing tool for enforcing filesystem and network restrictions on arbitrary processes at the OS level, without requiring a container.