Once UI

Once UI

Built for humans and agents

5.0
•4 reviews•

973 followers

The open-source frontend infrastructure for the AI-native web.
This is the 8th launch from Once UI. View more
Once UI 2.0

Once UI 2.0

Launching today
Builds consistent React apps for developers and AI agents
Once UI is an open-source design system for building polished React products with less repetitive code. Compose layouts with readable primitives, use a shared system of components and design tokens, and keep the result consistent as your product grows. Version 2.0 gives both you and your coding agent a clearer way to work. Its component catalog, compact rules, and task guides help agents use the system correctly; its foundations and predictable APIs make the output easier for you to understand.
Once UI 2.0 gallery image
Once UI 2.0 gallery image
Once UI 2.0 gallery image
Once UI 2.0 gallery image
Once UI 2.0 gallery image
Launch Team / Built With
Framer AI Agents
Framer AI AgentsDesign and publish professional sites with AI
Promoted