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

Directory of free JavaScript ebooks

Project Flogo is an open source ecosystem of opinionated event-driven capabilities to simplify building efficient & modern serverless functions, microservices & edge apps.

The definitive HTML5 mobile javascript framework

A simple set of best practices to get HTML5 projects off on the right foot.

A framework for developers who want to design, build and share cross device applications.

A typeface for creating sparklines in text without code.

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

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

🪺 A simple, clean, customizable Hugo theme

a [μ] microInteraction library built with CSS Animations and controlled by JavaScript Power

Really simple media queries in Sass

A simple, modern, browser notification system

Open-Source Iconfont.

World's smallest responsive 🔥 css framework (395 bytes)

The source of csszengarden.com

🎨Shards is a beautiful & modern Bootstrap 4 UI kit packed with extra templates and components.

The classless CSS reset (perfect for Communists).

Test drive programming fonts online: the definitive list of fonts for code.

The Semantic CSS Grid

A strong, independent CSS Framework. Only 2.7KB minified & gzipped.

A front-end framework for building html5 mobile apps with a native look and feel.

Kill your css layout bugs

Light Bootstrap Dashboard is an admin dashboard template designed to be beautiful and simple.

Teach your forms some manners!

JavaScript and Node.js Framework for controlling Arduino with HTML and WebSockets

Cross-browser styles for consistent select element styling

A jQuery Mobile theme based on Bootstrap

Ultra–Lean HTML Building Blocks for Rapid Website Production