# huntabyte/bits-ui

The headless components for Svelte.

Repository: https://github.com/huntabyte/bits-ui
Canonical: https://ross.abutalabs.com/products/bits-ui
Homepage: https://bits-ui.com
Language: TypeScript
License: MIT
License Family: permissive
Topics: component-library, components, headless, headlessui, svelte, svelte-components, svelte-ui, svelte-ui-components, sveltejs, sveltekit, svelte-5, svelte5
Last push: 2026-08-20T02:03:20+00:00

## Health v2 (maintenance only)
Score: 90/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 98, release rhythm 86, longevity 80
- inputs: {"age_days": 1123, "days_push": 14, "days_rel": 14, "gap_med": 1, "n_releases_24m": 122}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3507, forks 220 (observed 2026-08-28T04:08:07.656532+00:00)

## What it is
Bits UI is a headless, unstyled component library for Svelte providing accessible UI primitives. It offers composable, WAI-ARIA-compliant building blocks so developers can style and assemble their own component libraries.

## Use cases
- build accessible UI components in Svelte
- create a custom design system without fighting prebuilt styles
- add keyboard navigation and focus management to Svelte apps
- find a Radix UI alternative for Svelte
- build WAI-ARIA compliant dialogs, menus, and dropdowns
- use headless components with SvelteKit

## When to choose
- you use Svelte or SvelteKit and want full styling control
- accessibility compliance is a requirement
- you want composable primitives rather than opinionated styled components

## When to avoid
- you need pre-styled, ready-to-use components out of the box
- your project uses React instead of Svelte
- you want a complete design system with themes included

## Facets
- artifact type: library
- maturity: active
- function: ui-components, frontend-framework, accessibility
- domain: web-development, frontend, accessibility
- platform: browser
- tags: svelte, sveltekit, headless-ui, component-library, typescript, radix-inspired, wai-aria, nodejs, web-server

## Member repositories
- huntabyte/bits-ui (main) score 90

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:07.656532+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:35:44.987557+00:00, confidence not recorded.
  - readme: https://github.com/huntabyte/bits-ui (fetched 2026-08-28T04:08:07.656532+00:00, sha 8fb3f85136e6)
  - homepage: https://bits-ui.com (fetched 2026-08-29T09:29:57.463152+00:00, sha 50ba0831c258)
  - site_page: https://bits-ui.com/docs (fetched 2026-08-29T09:29:57.465419+00:00, sha 4a99831693ed)
- Data as of 2026-08-30T08:39:29.467469+00:00.