StackBlitz

StackBlitz is an instant, in-browser development environment that lets developers build, run, and share full web applications entirely in the browser, with no setup required. Powered by technology that runs a development environment directly in the browser, it starts in milliseconds and works offline, removing the friction of configuring local tools or waiting for cloud machines to spin up. For prototyping, learning, sharing examples, and even building real projects, StackBlitz offers a remarkably fast, frictionless way to write and run web code from anywhere, instantly.

The platform runs a real development environment — including a package manager and dev server — right in your browser tab, so you can create or open a web project and have it running immediately, with live preview as you edit. This makes it incredibly fast for trying ideas, building components, creating reproducible examples and bug reports, and teaching, since anyone can open a working environment in a link without installing anything. It supports popular web frameworks and increasingly incorporates AI to help build applications from prompts. The combination of instant startup, full in-browser capability, and easy sharing makes it a favorite for fast web development and collaboration.

StackBlitz is used by web developers, educators, and teams who want an instant, frictionless environment for building, sharing, and demonstrating web projects. The value is speed and accessibility: it removes setup entirely, letting developers go from idea to running code in seconds and share working examples with a link, which is invaluable for prototyping, learning, and collaboration. For tasks where spinning up a local or cloud environment is overkill or too slow, an instant in-browser IDE is genuinely useful. As web development tooling moves toward the browser and AI-assisted building, StackBlitz sits at the forefront, offering a fast, modern, widely loved environment for building and sharing web applications.