Bolt.new
Browser-based AI app builder powered by WebContainers
Description
Bolt.new is an AI-powered app builder from StackBlitz, the company that spent seven years building WebContainers, a WebAssembly-based runtime that runs Node.js entirely inside a browser tab. StackBlitz launched Bolt.new in October 2024 after recognizing that WebContainers was the ideal runtime for AI-built full-stack apps, growing to $40 million ARR within roughly a year. The platform targets non-developers building working products and developers who want to skip local environment setup entirely.
Key Capabilities:
WebContainers runtime running a full Node.js development environment client-side in the browser with no server infrastructure
Prompt-to-full-stack-app generation covering frontend, backend, and database logic from plain English descriptions
npm package installation and execution including Vite, Next.js, Astro, Tailwind, ShadCN, and React
In-browser terminal and live preview with direct code editing alongside AI-generated output
AI prompt enhancer that converts rough ideas into structured technical specifications before generation
One-click deployment and hosting from within the browser session
Multi-LLM support with Anthropic Claude as the primary model
Framework support covering Node.js, React, Next.js, PostgreSQL, and other popular JavaScript stacks
Mobile app generation alongside web application building
Open-source codebase on GitHub for developers building their own AI web development agents
Bolt.diy community variant with deeper customization and multi-LLM flexibility
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