OpenUI

In plain words

OpenUI lets users describe user interfaces in plain language and see them rendered instantly. Developers can convert designs into React, Svelte, and other frameworks, while non-developers can prototype without writing code. The tool accelerates UI development by bridging the gap between design ideas and functional components, serving both technical and non-technical users who need rapid prototyping capabilities.

written from the facts on this page · September 2026

From the sources

OpenUI accelerates UI dev. Craft live UI from ideas, convert to React, Svelte, etc. A game-changer for software devs to create custom components, and non-devs to streamline prototyping without coding. A side project from Chris Van Pelt of Weights & Biases.

OpenUI let's you describe UI using your imagination, then see it rendered live. - wandb/openui

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  The easiest way to generate beautiful UIs

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  I made this because building UIs in a lexical medium like code is super annoying. I have to pre-render what I’m making in my head, and then jump between the browser and IDE to test. I was inspired by the developer console in chrome and safari since I end up editing css there because it’s ironically more convenient. Hope it’s useful!

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  21st.dev2025 · 21st.dev · ▲1,211

  I originally built this app to organize and reuse interesting React + Tailwind components I came across on Twitter, inspired by the shadcn/ui approach. Later, a friend started contributing their own components, and it got me thinking—this could grow into something bigger, like an NPM for design engineers to share and use components. Would love to hear your thoughts!

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  Once UI 1.5Dec 2025 · once-ui.com · ▲299

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