Cost / License
- Free
- Open Source
Platforms
- Online
- LESS
- jQuery
Bootstrap is described as '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' and is a very popular CSS Framework in the development category. There are more than 100 alternatives to Bootstrap for a variety of platforms, including Web-based, Self-Hosted, Mac, Windows and Linux apps. The best Bootstrap alternative is Materialize, which is both free and Open Source. Other great apps like Bootstrap are Foundation, Bulma, Semantic UI and Tailwind CSS.
This project's goal is to be able to create a fully accessible material design styled website using React Components and Sass.

Shoelace.css is a starter kit and not a framework. Customizable through CSS variables, it doesn’t require Less, Sass, or any preprocessing at all. The minified version is only 35.3KB and much smaller when gzipped.
A CLI-first CSS framework for the web with abbreviated and optimized styles for simple and scalable design systems.




Unsemantic is a fluid grid system that is the successor to the 960 Grid System. It works in a similar way, but instead of being a set number of columns, it's entirely based on percentages.
Stylify is a library that generates utility-first CSS dynamically based on what you write. Write HTML. Get CSS 🚀.




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:
Free and premium components, elements and layouts Beautifully crafted with Tailwind CSS — Simple & easy to customise.


A minimalist CSS library built to keep it simple, but most importantly keep it in place. The entire thing was written in about 30 minutes, so we're continuously looking for new features to add. It is on Github, so if you have a feature you want to add, the quickest way for...
HTML KickStart is a ultra–lean set of HTML5, CSS, and jQuery (javascript) files, layouts, and elements designed to give you a headstart and save you a lot of hours on your next web project.
A set of completely unstyled, fully accessible UI components, designed to integrate beautifully with Tailwind CSS.