CSS Frameworks

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.

UI framework offering over 50 UI elements and 3000+ CSS variables. Integrates with React, Angular, and more, providing responsive design and easy theming.

Responsive framework with semantic, mobile-first design, offering HTML, CSS, JS resources for sites and emails, crafted by Zurb for accessibility.

A modern CSS framework based on Flexbox.

A lightweight and modular front-end framework for developing fast and powerful web interfaces.

Simple. Built on open source. The responsive front-end library based on Google's Material Design.

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.

Beautifully designed, expertly crafted components and templates, built by the makers of Tailwind CSS. The perfect starting point for your next project.

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

Element, a Vue 2.0 based component library for developers, designers and product managers.

UI component infrastructure and Material Design components for mobile and desktop Angular web applications.

Skeleton is a small collection of CSS & JS files that can help you rapidly develop sites that look beautiful at any size, be it a 17" laptop screen or an iPhone. Skeleton is built on three core principles:

EFY allows you to customize the design of your html based apps or websites from an UI sidebar menu and combine billions of possible patterns. You can also create, share or import json themes for easier access. All apps that use efy can share the same theme or individual themes.

Topcoat is a brand new open source CSS library designed to help developers build web apps with an emphasis on speed. It evolved from the Adobe design language developed for Brackets, Edge Reflow, and feedback from the PhoneGap app developer community.