Bolt

Bolt by StackBlitz runs a complete development environment inside your browser, powered by WebContainer technology that lets Node.js and npm run natively without any backend server. Describe an app in natural language, watch it scaffold and start running, then continue editing the live code directly or ask the AI for more changes. No terminal, no local setup, no configuration delays.

Highlights

• Full dev environment in the browser: Node.js, npm, file system, and preview all running locally
• Describe apps in plain language and see them run immediately in the browser
• Edit code by hand or ask the AI to make changes; both workflows blend seamlessly
• WebContainer technology eliminates the need for local development setup entirely
• Share live previews instantly via URL; no deployment step required

Perfect for learning, rapid prototyping, teaching, and experimenting without setup friction. Freemium model with generous browser IDE access; paid tiers offer faster performance and advanced AI capabilities.