StackBlitz makes a browser-based development environment for building web apps, with Node.js running locally in the tab through its WebContainers tech. That matters for developers who want a full coding workflow without installing local toolchains or relying on remote IDE servers. Its free Personal plan gives unlimited public projects, collections, and GitHub repositories, which is generous for open-source work, demos, and teaching. The platform sits closer to a real browser runtime than a lightweight online editor, so it is useful when you need to spin up and share production-style code quickly. Bolt.new extends the same company’s reach into AI-assisted app and site building, but the core free tier remains the browser IDE.
StackBlitz is a browser-based development platform for creating and running web applications. It uses WebContainers to boot Node.js development environments inside the browser tab, so code executes locally in the browser rather than on remote IDE servers.
Bolt.new is an AI-powered website and app builder that helps users create apps, websites, and prototypes by chatting with AI.