Tailwind Cascading Style Sheets (CSS) v4 moved tailwind.config.js configuration into CSS, as described in the Tailwind v4 announcement, and made full builds 3.5× faster.
For Tailwind v4 content-driven applications, the five free, Massachusetts Institute of Technology (MIT)-licensed libraries use different distribution models. They can pair with a Strapi 5 backend for content-driven applications.
In brief
- daisyUI documentation, Headless UI repository, Flowbite license, and HyperUI FAQs all support Tailwind v4 under MIT licenses, each with a different distribution model.
- Tailwind UI was rebranded as Tailwind Plus, a paid Tailwind product with no free tier.
- Pre-styled CSS classes offer one distribution model. Headless behavior-only components offer another, while copy-paste source code gives you code you own.
- Check accessibility and maintenance signals before choosing a library.
Why Tailwind CSS v4 Reshuffled Component Libraries
Tailwind v4 replaced the JavaScript config file with CSS-first configuration: a single @import "tailwindcss" plus a @theme directive for design tokens, the named values used for choices such as colors and spacing. It also detects template files automatically and ignores node_modules by default, which means Tailwind-built libraries installed as packages must be registered explicitly with the @source directive:
@import "tailwindcss";
@source "../node_modules/@acmecorp/ui-lib";The details differ. daisyUI v5 moved its configuration into CSS @plugin blocks, Flowbite adopted CSS-variable theming in v4.0, and HyperUI now requires Tailwind v4.2 or later. If you're still weighing Tailwind against a traditional framework before picking a library, the Bootstrap and Tailwind comparison covers that decision.
Five Free Tailwind Component Libraries
Tailwind CSS v4 reshaped the component ecosystem, prompting major libraries to ship new releases with CSS-first configuration and faster builds. This roundup compares five free, MIT-licensed options—covering pre-styled, headless, and copy-paste distribution models—to help you pick the right fit for your next project.
1. shadcn/ui
shadcn/ui documentation describes a source-code distribution tool. Its command-line interface (CLI) copies component source code directly into your repository, so you own the code and control when it changes.
Components are built on Base UI or Radix primitives; the project recently made Base UI the default for new projects while continuing to support Radix.
The ownership model cuts both ways: the code lives in your repository, so you control when it changes and maintain it yourself. The CLI's --diff and --dry-run flags help you preview upstream changes before applying them. Components install individually.
Best for: React and Next.js teams that want full code ownership. The tutorial on building a modern blog with React 19 and Strapi 5 uses shadcn/ui end to end.
2. daisyUI
daisyUI documentation describes a pure CSS plugin: it adds semantic class names like btn and card on top of Tailwind and ships no JavaScript to your bundle. Version 5 targets Tailwind v4 and includes 35 built-in themes, configured entirely in CSS:
@plugin "daisyui" {
themes: light --default, dark --prefersdark;
}Funding comes through project funding options including Open Collective and GitHub Sponsors.
CSS-only components such as dropdowns have known keyboard-accessibility limitations. Consider testing interactive components with a keyboard before shipping.
Best for: Rapid prototyping and framework-agnostic projects, since pure CSS works across frameworks such as React, Vue, Astro, or plain Hypertext Markup Language (HTML).
3. Headless UI
Headless UI components ship completely unstyled, accessible components: dropdowns, dialogs, comboboxes, and similar interactive widgets with keyboard navigation and focus management handled for you. You supply every visual decision through Tailwind classes. Headless UI maintenance comes from Tailwind Labs under an MIT license, and support runs through GitHub Discussions.
The React package is actively maintained, with v2.2.x supporting React 18 and 19 and ten releases across a recent twelve-month stretch. The Vue package tells a different story: its last release, v1.7.23, shipped in September 2024, with nothing since. Treat Headless UI as a React-first choice today.
Best for: Teams with a strong design system who need accessibility handled without inheriting anyone else's visual opinions.
4. Flowbite
Flowbite is a freemium user interface (UI) kit with an MIT-licensed core covering buttons, modals, forms, navbars, and more, plus free wrapper libraries for React, Vue, Svelte, and Angular. Its Flowbite repository hosts the project.
The v4.0 release added five named color themes (modern, minimal, enterprise, mono, playful), cut required HTML classes by half, and moved dark mode to CSS variables. Native RTL layout support covers Arabic, Hebrew, Persian, Urdu, and Yiddish.
For Next.js users, Flowbite React components are server-component ready, so they support React Server Components that render on the server. User-event handling still requires 'use client'.
Release cadence has also slowed: six months separated v4.0.1 from the minor-fix v4.0.2.
Best for: Projects that need a broad, pre-styled kit with multilingual and RTL requirements.
5. HyperUI
HyperUI components are a free, MIT-licensed collection of copy-paste HTML components with no package to install and no attribution required. Its component collections group Application and Marketing components together with Neobrutalism designs, and recent additions include a Chart.js charts collection with dark-mode variants and a rewrite of modals to use the native HTML <dialog> element. It requires Tailwind v4.2 or later and does not support v3.
Because it's plain HTML, HyperUI works with any framework or none. Some components lean on vanilla JavaScript or the @tailwindcss/forms and @tailwindcss/typography plugins. That copy-paste flexibility fits static-first stacks well; the guide to building an Astro blog with Strapi and Tailwind CSS shows the kind of project where it shines.
Best for: Developers who want no component package to install and are happy assembling pages from raw HTML blocks.
Bonus: Untitled UI React
Untitled UI React is an open-source collection of React components built on Tailwind CSS v4 and React Aria, which handles Web Accessibility Initiative–Accessible Rich Internet Applications (WAI-ARIA) semantics and keyboard behavior. The free tier includes MIT-licensed base components, a CLI, framework starter kits, dark-mode CSS variables, and 2,000+ icons:
npx untitledui@latest init --nextjs
npx untitledui@latest add buttonOfficial starter kits exist for Next.js and Vite, and the project integrates with Bolt.new, Claude, v0, and Lovable.
The PRO pricing details list one-time licenses at $349 (Solo), $999 (Studio), and $2,499 (Business). The advanced components, 250+ dashboards and page examples, and Figma synchronization require those licenses.
Designers already working in Untitled UI Figma get the most value, since the code and design files stay in sync.
Where Tailwind UI (Now Tailwind Plus) Fits
Earlier versions of this article listed Tailwind UI, which Tailwind Labs has since rebranded as Tailwind Plus. It therefore falls outside this free-library list. The Tailwind Plus license permits unlimited commercial end products but prohibits redistributing components or building a competing UI library. Free tooling from Tailwind Labs includes Tailwind CSS itself, Headless UI, and Heroicons.
How to Choose a Tailwind Component Library
With five viable options on the table, the right pick depends on how you want to distribute components, how strict your accessibility needs are, and how much long-term maintenance you're willing to take on. Use the criteria below to narrow the field before committing.
Pick a Distribution Model First
Everything else follows from this decision:
- Pre-styled (daisyUI, Flowbite): offers a quick setup, but overriding baked-in styles can mean fighting CSS specificity, the browser rules that determine which competing style wins, later.
- Headless (Headless UI, React Aria): full design control and documented accessibility behavior, at the cost of styling every component yourself.
- Copy-paste (shadcn/ui, HyperUI): you own the source outright, and you also own its security patches and bug fixes.
Verify Accessibility Claims Beyond Checkboxes
Headless libraries make the most specific accessibility commitments; Headless UI and React Aria documentation both document keyboard behavior against the ARIA Authoring Practices Guide. CSS-class libraries tend to be weaker here, as the daisyUI keyboard issues above show. Headless libraries still require you to test rendered output with accessibility testing tools such as a keyboard and a screen reader.
Read the License and the Free-Tier Boundary
The components covered are MIT-licensed across shadcn/ui, daisyUI licensing, Headless UI, Flowbite, HyperUI, and Untitled UI React, but the freemium splits differ: Flowbite Pro gates premium sections and Figma files, while Untitled UI pricing places advanced components and page examples behind paid licenses.
Check Maintenance Signals Before Committing
The OpenSSF evaluation guide suggests looking for a release within the last 12 months, meaningful commit activity, more than one maintainer, and responsive issue handling. Those signals separate the libraries here: daisyUI release history documents its releases, Flowbite has slowed, and Vue release history shows that Headless UI's Vue package has effectively stopped. The same evaluation habit applies to the rest of your stack; the Content Management System (CMS) guide on choosing a headless CMS walks through it for the backend.
Pairing a Tailwind Component Library with Strapi 5
A component library covers presentation, while the backend supplies content for content-driven apps. With the Strapi Tailwind integration, Strapi 5 auto-generates a Representational State Transfer (REST) application programming interface (API), with an API for each Content-Type you define, by default and with no plugin required, and your Tailwind-styled frontend fetches from it.
Two Strapi 5 REST specifics matter for your data-fetching code. Responses use flattened attributes (data.title, not the v4-era data.attributes.title), and documents are identified by a string documentId rather than an integer id:
const response = await fetch('http://localhost:1337/api/restaurants', {
headers: { Authorization: 'Bearer <token>' }
});
const data = await response.json();
// Strapi 5 flattened format: data.data[0].NameContent-Types are private by default, so you either configure public permissions or authenticate with an API token. Relations and media aren't returned unless you request them with the populate parameter. If you prefer GraphQL, it requires installing the @strapi/plugin-graphql plugin; the comparison of REST vs GraphQL in Strapi v5 helps you pick, and when auto-generated endpoints aren't enough you can create a custom API endpoint.
A working tutorial that combines these pieces: Build a developer blog with Strapi 5 and Next.js with the App Router and Tailwind CSS
Choose a Tailwind Library and Start Your Strapi Backend
Choose shadcn/ui for copy-paste ownership or daisyUI for zero-JavaScript theming. Headless UI offers unstyled accessibility. Create the backend with:
npx create-strapi@latest my-strapi-projectThe CLI installation guide defaults to TypeScript and SQLite, so you can have a Content-Type serving JavaScript Object Notation (JSON) to your Tailwind components. The tutorial above covers the remaining steps between an empty project and a deployed, styled, content-driven app.
