# react

Beautifully designed components

Copy-paste component library for React that puts you in full control — not a dependency, you own the code. Built on Radix UI primitives and Tailwind CSS for accessibility and styling. The most popular React component system in the ecosystem, setting the standard for how modern component libraries should be distributed and customized by developers.

Browser-native frontend coding agent for production codebases

Stagewise is an open-source frontend coding agent with 6,500+ GitHub stars that runs directly in the browser on localhost. YC S25 backed, it lets developers and designers point-and-prompt on live web applications with full devtools and console access, bridging the gap between visual editing and production codebase modification.

Local open-source AI app builder running entirely on your machine

Dyad is a local-first, open-source AI app builder with 20,000+ GitHub stars that provides a Lovable and Bolt.new alternative running entirely on your machine. It supports React and Next.js frameworks, integrates with Ollama for fully offline AI generation, and works cross-platform on macOS, Windows, and Linux with both cloud and local LLM providers.

React components for building AI chat interfaces

assistant-ui is a TypeScript/React component library for building AI chat interfaces with streaming responses, tool rendering, branching conversations, and LLM provider integrations. It supports Vercel AI SDK, LangGraph, and custom backends out of the box. Used by LangChain, Browser Use, and Stack AI. YC W25-backed with 9,000+ GitHub stars and 450K+ monthly npm downloads.

Full-stack app builder in the browser

AI-powered browser-based full-stack app builder from StackBlitz that turns natural language prompts into working web applications with zero local setup. Runs on WebContainers — a full Node.js runtime in the browser — giving AI control over filesystem, packages, terminal, and dev server. Supports React, Next.js, Vue, Astro, Svelte with live preview and one-click deploy to Netlify or Vercel. V2 adds built-in databases, auth, storage, and hosting via Bolt Cloud. 5M+ users.

Vercel's AI UI generator

Vercel's AI-powered UI generation tool that creates production-ready React and Next.js components from text or image prompts. Outputs clean code using shadcn/ui and Tailwind CSS, deployable to Vercel or copyable into existing projects. Supports iterative refinement through conversation, live browser preview, and generates accessible, responsive code. Ideal for rapidly prototyping landing pages, dashboards, forms, and UI components without manual setup.

AI-powered app builder from text prompts

Generate full-stack web applications from natural language prompts. Create.xyz produces interactive prototypes and production-ready apps with databases, authentication, and API integrations. Designed for non-technical founders and product teams who want to build and iterate on ideas rapidly without writing code from scratch.

Visual builder for React with headless CMS

Open-source framework for building applications powered by large language models. Provides composable abstractions for chains, agents, retrieval-augmented generation, and memory. Supports Python and JavaScript with integrations for all major LLM providers, vector stores, and data sources, making it the most widely adopted LLM orchestration toolkit.

Visual CMS and headless page builder

Next-generation AI coding assistant built directly into your IDE. Provides intelligent code completion, multi-file editing, and natural language code generation. Learns your codebase context to deliver more accurate suggestions than generic autocomplete, with support for VS Code, JetBrains, and other popular development environments.

AI-powered design to frontend code

AI-powered code search and navigation tool that understands your entire codebase semantically. Ask questions in plain English and get precise answers with file references. Integrates with GitHub repositories and local codebases, helping developers onboard faster and find relevant code across large monorepos without memorizing file structures.

Design-to-code handoff and CSS generation

Enterprise-grade AI platform for building, deploying, and managing machine learning models at scale. Provides end-to-end MLOps with experiment tracking, model registry, feature store, and automated retraining pipelines. Designed for data science teams that need reproducible workflows and governance across the full ML lifecycle.

Markdown with JSX components

AI-native terminal emulator that combines shell functionality with built-in LLM assistance. Ask questions about commands, generate scripts, and debug errors without leaving your terminal session. Integrates with your existing shell configuration and supports multiple AI providers, bridging the gap between traditional command-line workflows and AI-powered development assistance.

Beautiful docs for Next.js App Router

AI development platform focused on building and deploying intelligent agents for enterprise workflows. Provides tools for agent design, testing, monitoring, and scaling in production environments. Supports multi-model architectures and integrates with existing business systems, enabling companies to automate complex processes that require reasoning, decision-making, and tool use.

Next.js documentation framework

Open-source framework for evaluating and benchmarking LLM outputs across multiple dimensions. Test accuracy, coherence, safety, and task-specific performance with customizable evaluation suites. Integrates with CI/CD pipelines for automated regression testing, helping teams catch quality degradation before deploying model updates or prompt changes to production.

API mocking for browser and Node.js

Mock Service Worker intercepts network requests at the service worker level, enabling seamless API mocking for tests and development without changing application code. With 16k+ GitHub stars, MSW is the go-to solution for frontend developers who need realistic API simulation during development and testing without spinning up backend servers.

Turn Figma designs into React code

Fast, batteries-included JavaScript test framework by Meta. Zero-config setup with built-in code coverage, snapshot testing, and powerful mocking capabilities. The default test runner for React projects and one of the most popular testing tools in the JavaScript ecosystem. Parallel test execution and intelligent test ordering make it fast even for large test suites.

AI-powered UI builder with code export

Next-generation JavaScript test framework powered by Vite for blazing-fast execution. Native ESM support, TypeScript out of the box, and a Jest-compatible API for easy migration. Includes an optional browser mode for real DOM testing and a beautiful UI for exploring test results. The fastest growing JS test runner, appealing to developers who want modern tooling with minimal configuration.

Design and publish production websites

Visual website builder combining intuitive design tools with one-click publishing. Create responsive, animated sites without writing code, with React-based output under the hood. Includes built-in CMS, forms, and analytics. Popular among designers and startups who want pixel-perfect websites with interactions and animations that rival custom-coded sites.

Claude's inline code and document generation tool

Claude's built-in capability to generate and render interactive artifacts — code, documents, SVGs, React components, and HTML — directly inline within the conversation. No setup required. Turns Claude from a text-only assistant into a creative tool that can produce runnable applications, visualizations, and interactive prototypes during natural conversation.

Time-travel debugging for Redux

Browser extension for inspecting and debugging Redux state management in React applications. Features time-travel debugging to replay actions step-by-step, state diff viewer showing exactly what changed, action log with payload inspection, state import/export, and ability to dispatch actions manually. Supports Redux Toolkit and legacy Redux. Available for Chrome, Firefox, and as a standalone Electron app. Essential for debugging complex Redux state flows in production and development.

Build AI-powered web apps

Open-source TypeScript toolkit by Vercel for building AI-powered apps with streaming chat UIs, structured outputs, tool calling, and agent workflows. Framework-agnostic core with integrations for React, Next.js, Svelte, Vue, and Nuxt. Supports 20+ providers including OpenAI, Anthropic, Google, Mistral, and Ollama. Includes useChat and useCompletion hooks for rapid UI development. The standard SDK for adding AI features to web apps.

Inspect React component trees

Official browser extension by Meta for inspecting and debugging React component trees, props, state, hooks, and context in real-time. Features component highlighting on hover, profiler for measuring render performance and identifying bottlenecks, and component search/filtering. Supports React 16+ including Suspense, error boundaries, and concurrent features. Available for Chrome and Firefox. Essential for debugging re-renders, state management issues, and understanding component hierarchies.

Build optimized documentation sites

Meta's open-source documentation framework built on React with MDX support, versioning, internationalization, and search. Powers documentation sites for many open-source projects with 58k+ GitHub stars. The standard choice for open-source projects that need professional documentation with minimal setup, offering blog support and plugin extensibility alongside core docs features.