The browser goes vroom
30 examples covering frameworks, servers, and testing tools, all running in the browser.
Claude Coding
Generate a React apllication with Claude, streaming responses and live preview
Mistral Coding
Create a marketing website with Codestral, streaming code with live updates
OpenAI Coding
Use Astro with React, powered by OpenAI GPT-5.4 Mini
React
Multi-page React app with JSX, Tailwind CSS, and client-side routing
Vue
Vue 3 app with Composition API, reactive state, and Tailwind CSS
Svelte
Svelte app with reactive declarations, scoped CSS, and animations
Next.js
Next.js 14 with App Router, HMR, TypeScript, and file-based routing
Nuxt
Nuxt with auto-imports, file-based routing, and server API routes
Astro
Astro site with Markdown, component islands, and static generation
Vite
Vite + React + TypeScript with fast HMR and Tailwind CSS
React + Radix
React with Radix UI accessible compound components and npm bundling
Vue + Radix
Vue with Radix Vue headless components and VueUse composables
Express
Express.js REST API with middleware chains and interactive API explorer
Hono
Hono web server with logger, CORS middleware, and request context API
Jest
Jest test runner with result parsing and pass/fail tracking
Vitest
Vitest with ESM-first testing, result aggregation, and formatted output
esbuild
esbuild bundler with interactive config, size analysis, and multiple formats
Prettier
Prettier code formatting with configurable rules and before/after diffs
TypeScript
Compile and run TypeScript — interfaces, types, and module imports
Node.js
Node.js with built-in modules, CommonJS require, and ESM support
Shell Scripting
Shell commands, pipes, file manipulation, and text processing
Crypto
SHA-256 hashing, HMAC signatures, and secure random generation
npm Scripts
Install packages and execute package.json scripts with real-time progress
pnpm Scripts
Efficient package management and script execution with pnpm
Error Overlay
Catch runtime errors with formatted stack traces and full-screen overlay
Interactive Tutorial
7 guided coding lessons with automated validation and progress tracking
Plugin System
Build plugins with virtual modules, CSS stubbing, and code transforms
Persistence
Persist filesystem across refreshes with IndexedDB and automatic saves
Sandbox
Run untrusted code safely with file limits, memory caps, and access controls
pnpm Workspaces
Monorepo workspace discovery, symlink linking, and cross-package imports