Enllax is an ultra-lightweight and super easy to use plugin for parallax scrolling effect.
Selectivity.js is a modular and lightweight selection library for jQuery and Zepto.js.
ToProgress is a lightweight, no-dependency top progress bar library.
TabbedContent is a lightweight tabs plugin that uses the HTML5 history API to add your tab navigation to your browser's history. Also it is compatible with Bootstrap.
Layzr.js is a small, fast, modern, and dependency-free library for lazy loading images.
jMosaic is a lightweight jQuery plugin that can take a list of page elements and arrange them in a beautiful, tight-fitted tile mosaic grid.
rmodal.js is a simple and lightweight modal dialog with no external dependencies.
Select3 is a modular and lightweight selection library for jQuery and Zepto.js
Super Simple Slider (SSS) is a flexible and lightweight jQuery slider with super simple to set up.
Awesomplete is an ultra lightweight, customizable, simple autocomplete widget with zero dependencies, built with modern standards for modern browsers.
wysiwyg.js is a lightweight content editable jQuery editor which works with legacy browsers.