The best CSS Framework alternative to Semantic UI is Bootstrap, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Semantic UI and many of them are CSS Frameworks so hopefully you can find a suitable replacement. Other interesting CSS Framework alternatives to Semantic UI are Tailwind CSS, Bulma, Material UI and Foundation.
Bootstrap is a open-source collection of tools for creating browser sites and applications. It contains HTML and CSS-based design templates for typography, forms, buttons, charts, navigation and other interface components, as well as optional JavaScript extensions.
Tailwind is different from frameworks like Bootstrap, Foundation, or Bulma in that it's not a UI kit.
Material UI is an open-source React component library that implements Google's Material Design. It's comprehensive and can be used in production out of the box.
Foundation, a responsive front-end framework by Zurb, includes customizable HTML, CSS, and JS resources, enabling the creation of semantic, device-friendly websites and emails, promoting accessibility and content focus, with tools for designers and developers.
Element, a Vue 2.0 based component library for developers, designers and product managers.
Simple. Built on open source. The responsive front-end library based on Google's Material Design.
Front-end framework with a built-in dark mode and full customizability using CSS variables; great for building dashboards and tools.
Beautifully designed, expertly crafted components and templates, built by the makers of Tailwind CSS. The perfect starting point for your next project.
Free framework offering 400+ UI elements, 600+ icons, numerous CSS animations, responsive design, SASS files, customizable templates, comprehensive tutorials, active community, detailed documentation, and support for jQuery, Angular, React, and Vue.
Google's front-end web framework for building sites to the Material Design specification.
Spectre.css is a lightweight, responsive and modern CSS framework for faster and extensible development.
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Both are front end frameworks, but Foundation is more popular and widely used.