Bolt.new

Bolt.new is an AI-powered app builder running entirely in your browser, using Claude AI to generate React and Node.js applications from your descriptions. Thanks to WebContainers technology, it actually executes your code right in the browser window, so you can see your app working instantly without deploying anywhere else.

Choose Bolt.new if you want to experiment with ideas without setup overhead or you're teaching yourself app building. Since everything runs in-browser with no backend required, it's perfect for quick prototypes, learning projects, and sharing working demos with others just by sending a link; the tradeoff is that browser limits make it less suitable for production apps or those requiring persistent storage.