Low-level CSS Toolkit – the original Functional/Utility/Atomic CSS library

All CSS methodologies compared examples at one place.

Beautifully boring cosmetic-free primitives for structure and layout.

Structured, modular and test-driven front-end development and build workflow with Grunt task runner. Includes boilerplate code for Backbone with single/multipage RequireJS setup, and a RESTful API for prototyping.

APB CSS - Atomic Parts Base CSS -

💫 Functional Sass framework for rapid and painless development

🎨 Hyper: A component-first CSS design system.

A component-oriented SASS framework based on BEM convention and OOCSS methodology

Garlic, Onion, Salt & Pepper is a light weight css library to make front-end faster using OOCSS.

Vanilla CSS framework

OMCSS (Organisable and Maintainable CSS) is an approach towards creating a scalable and modular architecture for your application's stylesheet.

A Sass mixin / function library for modular CSS like SMACSS, OOCSS, BEM etc.

CSS framework based on Stylus, utilizing BEM and OOCSS principles.

基於 Vue.js + Express.js + Firebase + JWT 建構之電商網站，支援 PWA 及 RWD，UI 皆以 SCSS 並遵循 OOCSS 手刻而成

A simple OOCSS Framework for front-end developer

OrionCSS is a SASS framework which is simple, easy to use and scalable. It provides you with a solid ITCSS foundation on which to build your project.

A utility-class based, mid-sized, aspect-first and highly customizable CSS library for quick custom UI styles based on Modernizr and Browsengine

Simple SCSS+JS framework based on jQuery and Gulp

A well structured top down base css framework

Design free CSS boilerplate for writing modular, maintainable, and scalable CSS.