🎨 Local-first, open-source Claude Design alternative. 🖥️ Native desktop app. ⚡ 259+ Skills · ✨ 142+ Design Systems 🖼️ Web · desktop · mobile prototypes · slides · images · videos · HyperFrames 📦 Sa…

Test your prompts, agents, and RAGs. Red teaming/pentesting/vulnerability scanning for AI. Compare performance of GPT, Claude, Gemini, DeepSeek, and more. Simple declarative configs with command li…

Build, deploy, and orchestrate AI agents. Sim is the central intelligence layer for your AI workforce.

Open Source Company Brain

UI over MCP. Create next-gen UI experiences with the protocol and SDK!

Python tool for converting files and office documents to Markdown.

Desktop Extensions: One-click local MCP server installation in desktop apps

Measure and align everything.

The HTML Presentation Framework

AI-powered travel hacking and search with cash, points, miles, and award flights. Drop-in skills and MCP servers for Claude, Codex, and OpenCode.

The design language that makes your AI harness better at design.

XR Blocks is a lightweight WebXR + AI library for rapidly prototyping advanced AI + XR experiences.

Design Editor

Chrome DevTools for coding agents

Zero-dependency canvas shaders that can be installed from npm or designed in Paper

Practical productivity tools for Claude Code, Codex-CLI, and similar CLI coding agents.

Design in Tech Report 2026

The open source coding agent.

Multi-platform SDK for integrating GitHub Copilot Agent into apps and services

Your own personal AI assistant. Any OS. Any Platform. The lobster way. 🦞

A self hosted virtual browser that runs in docker and uses WebRTC.

Skybridge is a full-stack TypeScript framework for MCP Apps and ChatGPT Apps. Type-safe. React-powered. Platform-agnostic.

The Generative UI framework

Extract any website’s design system into tokens in seconds: logo, colors, typography, borders & more. One command.

The Frontend Stack for Agents & Generative UI. React, Angular, Mobile, Slack, and more. Makers of the AG-UI Protocol

Official repo for spec & SDK of MCP Apps protocol - standard for UIs embedded AI chatbots, served by MCP servers

Testing and evaluation platform to chat, inspect, and debug MCP servers, MCP apps, and ChatGPT apps.

Extension components for ChatGPT Apps SDK - Maps, Albums, Carousels and more. Built on @openai/apps-sdk-ui.