Shadcn UI vs. Fomantic-UI
By SW Habitation
Shadcn UI
Fomantic-UI
You know how building a website can feel like a lot, especially when you’re trying to style every little thing yourself? Buttons, forms, layouts… it adds up fast. That’s where UI frameworks really save the day. They give you a bunch of premade design elements that you can just drop in and go. It’s like having a design starter pack that helps your site look clean and professional, without spending forever tweaking the details.
What is Shadcn UI?
Shadcn UI is a beautiful and modern component library built on top of Radix UI, styled with Tailwind CSS, and intended for Next.js projects. It offers accessible, production-ready components with theming, variants, and built-in dark mode support.
You install components via CLI and get full control over the code.
Key Features of Shadcn UI
- Built on Radix Primitives: Accessibility and flexibility included.
- Tailwind CSS Styling: Easy customisation with utility-first approach.
- CLI Installation: Add only the components you need.
- Dark Mode Support: Pre-configured light and dark theme switching.
- TypeScript Friendly: Built entirely with TypeScript.
- Optimised for Next.js: Uses App Router structure and conventions.
Advantages of Shadcn UI
- Pre-styled and fast to use, ideal for building modern apps quickly.
- Easily theme-able using Tailwind and variants.
- Components are accessible by default.
- Ideal for SaaS apps, dashboards, and websites.
- Each component is editable because you own the code.
Disadvantages of Shadcn UI
- Requires Tailwind CSS, less suitable if you're not using Tailwind.
- Not suitable for other frameworks like Vue or Angular.
- Depends on Radix primitives, understanding Radix helps.
- Bundle size can grow if you install too many components.
- You need to manage components in your codebase manually.
What is Fomantic-UI?
Fomantic-UI is a modern version of the popular Semantic UI, made and improved by the community. It is a tool for building websites that are responsive, easy to style, and user-friendly, fast.
It focuses on semantic class names that read like natural language, making code more intuitive and easier to understand. Since it’s a fork, it has continued where Semantic UI left off, with new features, updates, and active maintenance by the community.
Key Features of Fomantic-UI
- Human-Friendly Classes: Semantic class names like ui button, ui card, ui grid.
- Rich Components: Buttons, forms, modals, dropdowns, cards, tabs, and more.
- JavaScript Behaviors: Built-in behaviors for modals, accordions, dropdowns, sliders, etc.
- Responsive Grid: Powerful 16-column responsive grid system.
- Theming System: Fully themable with LESS variables and customization options.
- Extensible: Modular build — include only what you need.
- Community-Powered: Active development and updates compared to the abandoned Semantic UI.
Advantages of Fomantic-UI
- Full-Featured: Includes both CSS components and JavaScript behaviors.
- Rich UI Library: Over 50 components for quick UI building.
- Readable Code: Natural-language style class names make HTML easier to read.
- All-in-One Framework: No need to rely on external JS for basic UI behaviors.
- Strong Theming Support: Easily customizable with LESS variables.
- Community Driven: Regularly updated and maintained by the community.
Disadvantages of Fomantic-UI
- Requires jQuery: JavaScript behaviors still depend on jQuery.
- Learning Curve: Semantic-style class names may feel unusual for new developers.
- LESS Dependency: Built on LESS, which is less popular today compared to Sass or CSS-in-JS.
- Not as Popular: Smaller ecosystem compared to Bootstrap or Tailwind CSS.
- Heavy File Size: Larger compared to lightweight frameworks like Bulma or Milligram.
Comparison Between Shadcn UI vs Fomantic-UI
Use Cases of Shadcn UI
- Fast development for SaaS products and dashboards
- Admin panels, marketing websites, and eCommerce platforms
- React/Next.js projects with Tailwind CSS setup
- Projects requiring built-in light/dark theming
- Startups and devs who want pre-built UI with flexibility
Use Cases of Fomantic-UI
- Teams migrating from Semantic UI: Seamless replacement with updates and support.
- Enterprise Web Apps: Strong theming and responsive layout capabilities.
- Prototypes: Quickly build UI with semantic classes.
- Admin Dashboards: Ready-to-use components and JS behaviors.
- Apps Requiring Complex UI: Dropdowns, modals, tabs, accordions built in.
Other Resources
Conclusion
UI frameworks make building a polished website way easier. Whether you're working on something simple or a big project, they help you get things looking just right without having to stress over every little design decision. With ready-to-use components, responsive layouts, and modern styles, you can build faster and smarter.
So, pick one that works for you, and start creating a site that looks amazing from the get-go.
Frequently asked questions
What is Shadcn UI?
It’s a modern UI library built using Radix UI components, styled with Tailwind CSS, and ready for React apps.
Is Shadcn UI customizable?
Yes, heavily! It uses Tailwind for full styling control and supports variants.
Does Shadcn UI support dark mode?
Yes, via Tailwind’s dark mode and included config setup.
Is Shadcn UI production-ready?
Absolutely. It’s ideal for building sleek, modern, accessible UIs with minimal setup.
Does Shadcn UI work with other frameworks like Vue?
No, it’s built for React (especially Next.js) and not compatible with Vue or Angular.
What is the difference between Semantic UI and Fomantic-UI?
Fomantic-UI is a community-driven fork of Semantic UI. While Semantic UI is no longer actively maintained, Fomantic continues development with updates and improvements.
Does Fomantic-UI need JavaScript?
Yes, for interactive components like modals, accordions, dropdowns, and tabs. It relies on jQuery for JavaScript behaviors.
Is Fomantic-UI beginner-friendly?
Yes, especially for developers who like readable class names for example, ui button. But it may take some time to adjust if you’re coming from Bootstrap or Tailwind.
Can I use Fomantic-UI with React or Vue?
Yes, but since it depends on jQuery, you may need extra configuration or wrappers like Semantic UI React though it’s not fully tied to Fomantic updates.
Is Fomantic-UI still maintained?
Yes, the community is actively maintaining it with frequent updates and bug fixes, unlike the original Semantic UI.