Selectize is the hybrid of a textbox and <select> box. It's jQuery based, and it has autocomplete and native-feeling keyboard navigation; useful for tagging, contact lists, etc.

Standards for developing consistent, flexible, and sustainable HTML and CSS.

An arctic, north-bluish color palette.

Bootstrap rubygem for Rails / Sprockets / Hanami / etc

Semantic UI, converted to Sass and ready to drop into Rails & Compass.

A collection of compass' stylesheet for bower dependencies and libsass