Open Source UI Library

Build faster with
AetherUI

A modern collection of headless, accessible Web Components built with Lit. Framework-agnostic and designed for performance.

Get Started GitHub

npm install @aetherui-kit/core

Framework Agnostic

Works seamlessly with React, Vue, Angular, Svelte, or vanilla JavaScript. No wrappers needed.

Lightweight

Tree-shakeable components averaging under 5KB gzipped. Ship only what you use.

Accessible

WAI-ARIA compliant with full keyboard navigation and screen reader support built-in.

Customizable

Style with CSS variables and shadow parts. Full control over appearance without complexity.

Simple to Use

Import, register, and use. It's that easy.

app.js

import { defineAeButton } from '@aetherui-kit/core';
// Register the component
defineAeButton();

index.html

<ae-button variant=“primary”>
Click me
</ae-button>

25+ Components

Everything you need to build modern interfaces

Button Modal Dropdown Tabs Accordion Toast Tooltip Input Select Checkbox Radio Switch

View all components →

Ready to get started?

Install AetherUI and start building beautiful interfaces today.

Read the Docs