Once UI is an open-source design system for Next.js and Figma. It offers a flexible style system and a wide range of highly functional components. It also includes deployment-ready products for building a presence and monetizing from day one.

Once UI is not just a design system—it's a launchpad for creators. Whether you're a developer, designer, artist, or indie maker, we provide the tools and community to help you ship faster and stand out.

Once UI was built with simplicity and developer experience in mind. It's really easy to customize Once UI apps, and our products were designed to require the least amount of coding to launch. That said, Once UI has a very unique syntax that might take a bit of time to get familiar with if you're used to Tailwind and composable component libraries.

Yes, Once UI is built for Next.js and we don't have plans to add support for other frameworks at the moment. We love the simplicity that Next.js offers and we've built many practices and components around Next.js specific solutions.