BootStrap

Bulma is a CSS Framework, Build beautiful interfaces using Bulma Framework.

Tailwind is a utility based CSS framework and best Alternative for BootStrap as it has similar styles.

Material Design is a frontend CSS framework by Google.

Lightweight UI components for Vue.js based on Bulma

Javascript Library for Building Frontend User Interfaces

Javascript Framework for Creating Awesome Frontend Designs

A modern responsive front-end framework based on Material Design

Spectre is a lightweight modern and Responsive CSS Framework for faster and extensible web development

PureCSS is a lightweight mobile friendly CSS Framework

The most advanced responsive front-end framework in the world.