enquire.js : A lightweight, pure JavaScript library for responding to CSS media queries.
Text_Highlighter : Provides functionality to perform syntax highlighting for different file formats.
DOMAssistant : The modular lightweight JavaScript library, with CSS selectors, event handling, AJAX and complete Unicode support
emotion : emotion is a high performance, lightweight css-in-js library that supports both string and object based styles.
vue.js : Vue.js is a library for building interactive web interfaces. It provides data-reactive components with a simple and flexible API. Core features includ...
Rainbow is a code syntax highlighting library written in Javascript.
It was designed to be lightweight (1.4kb), easy to use, and extendable.
It is completely themable via CSS.