CSS-in-JS with build time generated styles, RSC compatible, multi-variant support, and best-in-class developer experience.

Semantic UI is described as 'UI framework offering over 50 UI elements and 3000+ CSS variables. Integrates with React, Angular, and more, providing responsive design and easy theming' and is a CSS Framework in the development category. There are more than 100 alternatives to Semantic UI for a variety of platforms, including Web-based, Self-Hosted, Mac, Windows and Linux apps. The best Semantic UI alternative is Bootstrap, which is both free and Open Source. Other great apps like Semantic UI are Tailwind CSS, Bulma, Material UI and Foundation.
CSS-in-JS with build time generated styles, RSC compatible, multi-variant support, and best-in-class developer experience.

Bacuri is a minimalist framework that uses Material Design concepts, and has a plugin system to enhance its capabilities.

Flat UI Pro is made on the basis of Twitter Bootstrap in a stunning flat-style, and the kit also includes a PSD version for designers. Flat UI Pro contains a huge number of basic components, icons and glyphs.
Carefully crafted, easy to customize, fully responsive UI Components, Templates and Tools for your Tailwind CSS based projects.

Unpack your meal and get coding. An invasive CSS library to get your style started.
Riot lets you build user interfaces with custom tags using simple and enjoyable syntax. It uses a virtual DOM similar to React but faster. Riot is very tiny compared to industry standards. We think there is a clear need for another UI library.




Wee is an extensible front-end web development framework for building responsive websites using Less CSS paired with a powerful JavaScript library.
A set of completely unstyled, fully accessible UI components, designed to integrate beautifully with Tailwind CSS.