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Build modern web applications with components you own.

An open-source collection of 464+ accessible, fully customizable React 19 components styled with Tailwind CSS 4 tokens. Zero external dependencies — copy, paste, and ship.

Browse 464+ ComponentsDocumentation
npx bigbullui add button
464+ Components0 DependenciesReact 19 + Tailwind v4MIT Licensed
workspace.preview · react 19
View all 460+ components →
STUB // KPIMONTHLY

TOTAL REVENUE

$48,295.00
+12.4%vs last month
VALIDATED EMISSION
STUB // KPIREALTIME

ACTIVE SESSIONS

14,290
+8.1%current online
VALIDATED EMISSION
STUB // KPIHEALTHY

API LATENCY

24ms
-14% fasterglobal p99
VALIDATED EMISSION

Active Deployments

Live production cluster nodes

PROD
api-gateway-us-east
v2.4.1 · 42ms
auth-service-fra
v1.8.0 · 18ms
billing-worker-edge
v3.0.2 · 24ms

Cluster Configuration

Interactive cluster parameters

Reroutes traffic on health check failure

Compute Power Allocation75 Cores

Architected For Speed & Ownership

Everything you need. Nothing you don't.

Built from first principles for developers who want complete control over their UI stack without the dependency bloat.

01 · ZERO DEPENDENCIES

Pure React 19 + Tailwind v4

Components import ONLY React and a 7-line cn utility. No Radix, Lucide, or Framer Motion bloat slowing down your bundles.

02 · CODE YOU OWN

Copy, paste, customize

Not a locked npm package where you wait for PR merges. Run the CLI or copy the raw .tsx files directly into your codebase.

03 · MODERN DESIGN TOKENS

Tailwind CSS v4 Native

Built on standard CSS variables with @theme inline. Seamless light and dark mode switching with tactile ink and warm paper tones.

04 · ACCESSIBILITY BUILT-IN

Keyboard and screen-reader ready

WAI-ARIA roles, roving tabindex, focus rings, and motion-reduce fallbacks built directly into every interactive component.

Instant Setup

Up and running in 30 seconds.

Add components directly into your project via the CLI or copy the source code.

Full setup guide →
STEP 01

Initialize utils & tokens

Generates the cn helper and sets up CSS tokens.

npx bigbullui init
STEP 02

Add components you need

Copies zero-dependency source code into your UI folder.

npx bigbullui add button card metric-card
STEP 03

Import and ship

Use immediately with full TypeScript types and tokens.

import { Button } from "@/components/ui/button";

Component Catalog

Explore 464+ components across 9 categories.

From foundational form controls and data tables to rich charts and retro interactive widgets.

Explore all components →