Styling and UI kits
Tailwind CSS
690.6K sitesOpen source
Tailwind is a utility-first CSS framework for rapidly building custom user interfaces.
Radix UI
177K sitesOpen source
Radix UI is a React-based user interface component library that offers accessible, responsive, and customisable components for building web applications.
shadcn/ui
115.7K sitesOpen source
shadcn/ui is a component system built with Radix UI and Tailwind CSS.
MUI
65K sitesSaaSOpen sourceFreemium · Pay as you go
MUI(formerly Material UI) is a simple and customisable component library to build faster, beautiful, and more accessible React applications.
Chakra UI
9.1K sitesOpen source
Chakra UI is a simple, modular and accessible component library that gives you the building blocks you need to build your React applications.
Sass
1.3K sitesOpen source
Sass is an extension of CSS that enables you to use things like variables, nested rules, inline imports and more.
daisyUI
212 sitesOpen source
daisyUI is a customisable Tailwind CSS component library that prevents verbose markup in frontend applications. With a focus on customising and creating themes for user interfaces, daisyUI uses pure CSS and Tailwind utility classes, allowing developers to write clean HTML.
React Email
Open source
Write emails as React components that render well in every inbox.
Data from the open Wappalyzer database (enthec/webappanalyzer, GPL-3.0), updated every week. Site counts from the HTTP Archive (September 2026). Code tools (frameworks, build, ORMs…) come from a list kept by Faundr.