Build performant 3D user interfaces for Three.js using @react-three/fiber and yoga with support for nested scrolling, buttons, inputs, dropdowns, tabs, checkboxes, and more.

Perfect for games, XR (VR/AR), and any web-based Spatial Computing App.

npm install three @react-three/fiber @react-three/uikit

A simple UI with 2 containers horizontally aligned, rendered in fullscreen. When the user hovers over a container, the container's opacity changes.

import { createRoot } from 'react-dom/client'
import React from 'react'
import { Canvas } from '@react-three/fiber'
import { Fullscreen, Container } from '@react-three/uikit'

createRoot(document.getElementById('root')).render(
  <Canvas>
    <Fullscreen flexDirection="row" padding={100} gap={100}>
      <Container flexGrow={1} backgroundOpacity={0.5} hover={{ backgroundOpacity: 1 }} backgroundColor="red" />
      <Container flexGrow={1} backgroundOpacity={0.5} hover={{ backgroundOpacity: 1 }} backgroundColor="blue" />
    </Fullscreen>
  </Canvas>,
)

We provide multiple kits containing themable pre-styled components. Inspired by shadcn, you can use our CLI to install the source code of any component to your desired loaction with one command.

For example, to add the button from the default kit, run: npx uikit component add default Button

default based on Shadcn	apfel inspired by AVP
View All Components	View All Components
npx uikit component add default Button	npx uikit component add apfel Button

Some familiarity with react, threejs, and @react-three/fiber, is recommended.

Get started with building your first layout, take a look at our examples to see uikit in action, or learn more about:

• All components and their properties
• Interacitivity
• Custom materials
• Custom fonts
• Responsivene user interfaces
• Scrolling
• Sizing
• Common pitfalls
• Optimize performance
• Theming components

• from Koestlich
• from HTML/CSS
• from Tailwind