🍿 A cross-browser library of CSS animations. As easy to use as an easy thing.

Tomorrow Theme

Smarter defaults for colors on the web.

List of awesome CSS frameworks in 2026

Smoothly transitions numbers with ease. #hubspot-open-source

👜 A beautiful CSS library to kickstart your projects

Data entry can be beautiful

Automatically persist your forms' text and select field values locally, until the form is submitted.

This project has been superceeded by an official Bootstrap Sass port. Please use:

Flakes is an Admin Template Framework. A combination of CSS Libraries, JavaScript Libraries and Design files that help you build business tools very quickly.

The Semantic CSS Grid

Kill your css layout bugs

An opinionated front-end starter kit for your "nobuild" application

Holmes is stand-alone diagnostic CSS stylesheet that can highlight potentially invalid or erroneous HTML(5) markup by adding one class

Sass-based CSS Architecture

A Sass framework that empowers you to create flexible, clear, and semantic website layouts.