Semantic UI is a development framework based on user interface language you can use to build websites. It’s a great alternative to Bootstrap.
Rebar is a Sass / Stylus grid framework to make responsive development more efficient and keep CSS organised.
Rebar Grid Framework
Typesettings.css is the typography boilerplate for your minimal website. All typographic styles are inspired by graphic design fundamentals
Typesettings.css – A type boilerplate
Semantic is a UI component framework based around useful principles from natural language.
Semantic – UI components
Material UI is a CSS framework and a set of React components based on Google’s Material Design.
Material UI – Material Design framework
Materialize is a modern responsive front-end framework based on Material Design by Google.
Materialize – Material Design framework
Flexible grid system is a simple and light responsive CSS framework compatible with all modern (and not so modern!) browsers.
Flexible.gs – Responsive CSS framework
Basscss is a lightweight collection of CSS base element styles, utilities, layout modules, and color styles.
Basscss – Low-level CSS toolkiy
flexible.gs is a new, lightweight and powerful grid system for building websites. A freebie released by Doğukan Güven Nomak.
flexible.gs – Flexible grid system
Simple Grid is an essential CSS framework providing a smart responsive grid system. No styles, no design, just grids! By Przemek Galarowicz.
