Bolt

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Bolt, found at bolt.new, is an AI-powered full-stack app builder from StackBlitz, the company behind WebContainers. It belongs to the wave of vibe coding tools that turn a plain-language prompt into a working web application, but its defining trait is technical: the entire development environment runs inside the browser tab. Thanks to WebContainers, a real Node.js runtime, filesystem, package manager, and dev server all run client-side, so when Bolt generates an app it writes real files, installs real npm packages, and starts a real server you can interact with, with no local setup at all. What makes this different from a code generator is that Bolt gives its AI complete control over that environment, including the filesystem, terminal, package manager, and browser console. That lets its agents handle the whole app lifecycle, from creating the project to deploying it. You describe what you want to build, Bolt generates code across multiple files and shows a live, interactive preview beside it, and you refine by chatting or by editing the code directly. That hybrid approach suits both non-technical builders who want to stay in the conversation and developers who want to drop into the code. Bolt handles the full stack, supporting popular JavaScript frameworks like React, Next.js, Vue, and Svelte, along with databases, API endpoints, and user authentication, and it added native hosting, databases, and auth through Bolt Cloud. Projects deploy in one click to providers like Netlify, Vercel, and Cloudflare, and you can import designs from Figma or existing code from GitHub as a starting point. The full codebase can be exported or synced to GitHub, so there is no lock-in. Bolt is model-flexible, running on frontier models from Anthropic and others with support for the Model Context Protocol, and its core is open source on GitHub. It is SOC 2 Type II compliant, and because code executes in the browser's sandbox it stays isolated from the local machine. Bolt is best known as one of the fastest paths from a prompt to a running, shareable full-stack prototype, used by founders, product teams, and developers alike.