HeroUI

Beautiful React UI library (formerly NextUI) built on Tailwind and React Aria.

Overview

HeroUI is a modern, open-source UI component library for building web and mobile applications. It provides professionally designed React components built on React Aria Components and Tailwind CSS v4, with smooth animations, polished details, and built-in accessibility out of the box.

The library emphasizes being "beautiful by default" while remaining deeply customizable. Every component is fully typed, tree-shaken for optimal bundle size, and designed to work seamlessly with React 19 and Tailwind v4. HeroUI positions itself as a living library that evolves with the ecosystem, rather than static copy-paste code that becomes outdated.

HeroUI also offers a broader ecosystem including HeroUI Native for React Native mobile development, HeroUI Chat for text-to-app creation, and UI for LLMs with upcoming MCPs support.

Key features

Pre-built accessible React components
Built on React Aria and Tailwind CSS v4
Smooth animations and polished details
Full TypeScript support with autocompletion
Deep customization via Tailwind utilities and CSS variables
Tree-shaken for minimal bundle size
React 19 and Tailwind v4 ready
Figma design system included

Pros

Beautiful default styling requires no extra work
Comprehensive accessibility built-in (WCAG compliant)
Fully typed with excellent IDE support
Lightweight and tree-shaken
Active maintenance with regular updates
Large component library with 50+ components
Free and open source

Cons

React-specific (not framework-agnostic)
Requires Tailwind CSS v4 setup
Learning curve for deep customization
Smaller ecosystem compared to MUI or Chakra UI

Use this if

You need a modern, accessible React component library with beautiful defaults, want to avoid heavy styling work, or are building with Tailwind CSS and React 19.

Skip this if

You need a framework-agnostic solution, prefer Vue or Angular, or don't use Tailwind CSS in your project.

Best for

Building production-ready React applicationsCreating accessible user interfacesRapid UI development with customizable componentsTeams using Tailwind CSS and ReactAI-assisted development workflows

Alternatives

Chakra UIMaterial-UI (MUI)shadcn/uiAnt DesignRadix UI

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