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

Modern CSS framework based on Flexbox

Monospaced font family for user interface and coding environments

A collection of loading indicators animated with CSS

Skeleton: A Dead Simple, Responsive Boilerplate for Mobile-Friendly Development

Automatically add a progress bar to your site.

Build mobile apps with simple HTML, CSS, and JavaScript components.

A spinning activity indicator

A CSS only tooltip library for your lovely websites.

A drop-in collection of CSS styles to make simple websites just a little nicer

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

A modern dialog library which is highly configurable and easy to style. #hubspot-open-source

Compass is no longer actively maintained. Compass is a Stylesheet Authoring Environment that makes your website design simpler to implement and easier to maintain.

Create beautiful CSS3 powered animations in no time.

Tailwind Starter Kit a beautiful extension for TailwindCSS, Free and Open Source

An experiment using the peerflix module of nodejs and connecting a bunch of APIs.

Simple tooltips made of pure CSS

JavaScript, SCSS, Sass, Less, and Stylus helpers for rendering high-resolution image variants

An extensible open-source mobile backend framework

Instagram.css - Complete set of Instagram filters in pure CSS

A simple and easy jQuery plugin for CSS animated page transitions.

The most advanced, yet intuitive, grid system available for Sass or Stylus

Create powerful mobile apps with just HTML, CSS, and Zepto.js (or jQuery).

Data entry can be beautiful

A library for creating dropdowns and other floating elements. #hubspot-open-source

A design system for building retro Apple interfaces

A powerful little tool for managing CSS animations

A simple, modern, browser notification system

Awesome buttons for awesome projects!

Open-Source Iconfont.