ReUI is a free, open-source component library and shadcn registry for the shadcn/ui ecosystem, built by KeenThemes. It offers 1,000+ production-ready components across 68 categories, composed from shadcn/ui primitives, and uniquely supports both Base UI and Radix UI versions of its components. It is built with React, TypeScript, Tailwind CSS and Motion, and includes animated effects.

Yes. The ReUI component library is free and open source under the MIT license, with 1,000+ components you can copy into your own project. There is a paid ReUI Pro tier (templates and premium blocks), so it follows a freemium model — the core registry is free and the premium assets are the paid upgrade.

Is ReUI the same as shadcn/ui?

No, but it is built for it. shadcn/ui provides the core copy-paste components; ReUI is a much larger registry built on those same primitives, adding hundreds more components, animated effects and blocks. If you use shadcn/ui, ReUI installs alongside it through the shadcn CLI and uses the same tokens.

Does ReUI work with Tailwind CSS?

Yes. ReUI is built with Tailwind CSS and Motion and uses the shadcn/ui token structure, so its components fit straight into a Tailwind + shadcn project. Components are copied into your codebase, so you own and can customize them.

ReUI Alternatives: 8 shadcn Component Libraries (2026)

Last updated: June 30, 2026 · Reviewed by: DesignRevision team · 8 shadcn component libraries compared

ReUI has quickly become one of the largest registries in the shadcn/ui ecosystem. Built by KeenThemes, it offers 1,000+ copy-paste components and animated effects across 68 categories — all composed from shadcn primitives — and it uniquely ships both Base UI and Radix UI versions of every component. For teams that want far more than the core shadcn/ui set, it is a huge head start.

But it is not the only shadcn registry, and the ecosystem is full of strong options. Origin UI and Kibo UI offer large component collections, Magic UI and Aceternity UI focus on animation, and shadcn Studio bundles theming with components. Depending on whether you want breadth, motion, or a specific style, another option may fit better.

This guide explains what ReUI is, whether it is free, how it relates to shadcn/ui, and then ranks the 8 best ReUI alternatives — the leading shadcn component libraries and registries — so you can pick the right one for your project.

Key Takeaways

If you remember nothing else:

ReUI is a free, open-source shadcn registry from KeenThemes — 1,000+ components with both Base UI and Radix UI versions, built with React, Tailwind and Motion

shadcn/ui is the foundation it builds on — start there for the core components (see our shadcn alternatives guide)

Origin UI and Kibo UI are the best picks for broad component coverage

Magic UI, Aceternity UI and Cult UI are the go-to libraries for animated components

For copy-paste shadcn components you can ship today, browse our free Shards UI gallery

What Is ReUI?

ReUI is a free, open-source component library and shadcn registry for the shadcn/ui ecosystem, built by KeenThemes. It describes itself as a "design-forward shadcn kit," and it offers 1,000+ production-ready components across 68 categories, all composed from shadcn/ui primitives.

What sets it apart is breadth and flexibility. The registry covers far more than the core shadcn/ui set, and it uniquely ships both Base UI and Radix UI versions of its components — so you can use whichever primitive layer your project is built on, something most registries do not offer. It is built with React, TypeScript, Tailwind CSS and Motion, and includes animated effects alongside standard components. The source lives at github.com/keenthemes/reui.

Because it is a first-class shadcn registry, components install through the shadcn CLI and land in your own codebase, so you own and customize them. KeenThemes also offers a paid ReUI Pro tier with templates and premium blocks.

Key stats:

Free, open-source shadcn/ui component library and registry
1,000+ components across 68 categories, built on shadcn primitives
Ships both Base UI and Radix UI versions of components
Built with React, TypeScript, Tailwind CSS and Motion (with animations)
Installs through the shadcn CLI; you own the copied code
Open source (MIT); paid ReUI Pro tier
By KeenThemes; repository: github.com/keenthemes/reui

Is ReUI Free?

Yes. The ReUI component library is free and open source under the MIT license — all 1,000+ components are free to use, including in commercial projects, and you copy them into your own codebase.

KeenThemes also sells ReUI Pro, a paid tier with premium templates and blocks. So it follows a freemium model: the core registry is free, and the premium assets are the paid upgrade. If you only need the open-source components, there is no paywall.

ReUI vs shadcn/ui

A common question is how ReUI relates to shadcn/ui — and the answer is that they are layers, not competitors. shadcn/ui gives you the core, accessible copy-paste components; ReUI is a much larger registry built on those same primitives.

	ReUI	shadcn/ui
What it is	Large component registry	Core component collection
Catalog	1,000+ components	Core set
Primitives	Base UI and Radix UI	Radix UI (adding Base UI)
Animations	Built in (Motion)	Minimal
Install	shadcn CLI (registry)	shadcn CLI
License	MIT (free; paid Pro)	MIT (free)

In short: you typically use shadcn/ui for the foundation and pull in ReUI when you want a much larger set of components and animated effects on top — they are designed to work together, not replace one another.

Why Look for ReUI Alternatives?

ReUI is excellent, but it is not the right fit for every project. Here are the most common reasons developers evaluate alternatives.

1. You want a specific animation style

ReUI includes animated effects, but its style may not match your brand. Libraries like Magic UI, Aceternity UI and Cult UI each take a different approach to motion.

2. You want a smaller, simpler set

A 1,000-component registry can be more than you need. If you want a focused, curated collection, a smaller library or the core shadcn/ui set is easier to navigate.

3. You want theming bundled in

If you want a theme editor alongside your components, shadcn Studio combines theming with a large component and block library in one place.

4. You want advanced application components

For complex app components — Gantt charts, Kanban boards, editors — a registry like Kibo UI focuses on the application layer rather than general UI and animations.

The 8 Best ReUI Alternatives in 2026

Every option below is a shadcn/ui component library or registry, so it fits the same copy-paste, Tailwind-based workflow as ReUI.

Our pick to ship fast: Shards UI — If you want accessible shadcn/ui components you can preview and copy without browsing a 1,000-component registry, start with the free Shards UI gallery — curated components and blocks, with Shards Pro adding premium blocks and templates. It is the fastest way to assemble a polished UI on the shadcn foundation.

1. shadcn/ui

Best for: the accessible foundation underneath

shadcn/ui is the copy-paste component collection that ReUI and most registries build on. Use it for your core, accessible components, then add a registry when you need more. See our shadcn alternatives guide for the wider ecosystem.

License: MIT (free, open source)
Tech stack: React, Radix UI, Tailwind CSS
Strengths: The standard foundation, huge community, code ownership
Weaknesses: Core components only — no large registry or animations

2. Origin UI

Best for: a large free component collection

Origin UI is a big collection of free, copy-paste components built on shadcn/ui and Tailwind. Like ReUI, it focuses on breadth — hundreds of variations of inputs, buttons, dialogs and more — without a paid tier for the core set.

License: Free, open source
Tech stack: React, Tailwind CSS
Strengths: Very large free catalog, lots of variants
Weaknesses: Less animation focus than ReUI

3. Kibo UI

Best for: advanced application components

Kibo UI is a shadcn/ui registry of advanced, composable components — Gantt charts, Kanban boards, editors and more. It complements general libraries by covering the application layer. See our Kibo UI alternatives guide for how it compares.

License: MIT (free, open source)
Tech stack: React, shadcn/ui, Tailwind CSS
Strengths: Advanced app components, shadcn-native, free
Weaknesses: Narrower than a general registry like ReUI

4. Magic UI

Best for: animated marketing components

Magic UI is a library of 150+ animated components and effects designed to pair with shadcn/ui. It is the go-to for marketing pages that need motion. See our Magic UI alternatives guide for the animated-component landscape.

License: Free, open source (paid Pro templates)
Tech stack: React, Tailwind CSS, Motion
Strengths: Polished animations, great for landing pages
Weaknesses: Marketing-focused; narrower than a full registry

5. Aceternity UI

Best for: bold, flashy hero effects

Aceternity UI offers striking, animation-forward components — 3D cards, spotlights, animated backgrounds — that make a landing page memorable. It leans further into visual "wow-factor" than ReUI.

License: Free components (paid templates)
Tech stack: React, Tailwind CSS, Motion
Strengths: Eye-catching effects, great for hero sections
Weaknesses: Effects can be heavy; less suited to repeatable system components

6. Cult UI

Best for: modern, animated shadcn components

Cult UI is a set of polished, animated components built on shadcn/ui and Motion. It offers interactive components with a refined, modern feel — a smaller, more curated take than ReUI.

License: Free, open source
Tech stack: React, TypeScript, Tailwind CSS, Motion
Strengths: Tasteful animations, modern aesthetics, shadcn-native
Weaknesses: Smaller catalog

7. shadcn Studio

Best for: components plus a theme editor

shadcn Studio combines a large library of components and blocks with a visual theme editor. If you want to customize a theme and grab ready-made UI in the same place, it is a strong all-in-one option.

License: Freemium
Tech stack: React, shadcn/ui, Tailwind CSS
Strengths: Components, blocks and theming together
Weaknesses: Broader scope than a focused registry

8. HextaUI

Best for: modern, clean shadcn components

HextaUI is a modern collection of copy-paste components built on React and Tailwind in the shadcn style, with clean designs and a growing catalog.

License: Free, open source
Tech stack: React, Tailwind CSS
Strengths: Clean modern designs, easy copy-paste
Weaknesses: Smaller and newer than ReUI

Quick Comparison Table

Library	Focus	Catalog size	Animations	License
ReUI	shadcn registry	1,000+	Yes	MIT (freemium)
shadcn/ui	Core components	Core set	Minimal	MIT
Origin UI	Broad component set	Large	Minimal	Free
Kibo UI	Advanced app components	Medium	Some	MIT
Magic UI	Animated marketing	150+	Heavy	Free (paid Pro)
Aceternity UI	Flashy hero effects	Large	Heavy	Free (paid templates)
Cult UI	Animated components	Small	Moderate	Free
shadcn Studio	Components + theming	Large	Some	Freemium
HextaUI	Modern components	Growing	Some	Free

How to Choose a ReUI Alternative

Pick based on what you want:

Need the accessible foundation first? Start with shadcn/ui and add a registry on top.
Want broad, free component coverage? Origin UI for breadth, or Kibo UI for advanced app components.
Want animations? Magic UI, Aceternity UI or Cult UI.
Want theming bundled in? shadcn Studio.
Just want components to ship today? Copy from our free Shards UI gallery.

All of these pair with Tailwind and shadcn/ui, so you can mix several in one project. The right choice comes down to how much breadth you need, whether you want animations, and whether you want extras like theming bundled in. Explore our developer tools for more building blocks along the way.

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ReUI Alternatives: 8 shadcn Component Libraries (2026)