The simply the best collection of plugins
This tiny (5KB, < 200 lines) jQuery Bootstrap plugin turns any DIV into a WYSIWYG rich-content editor. Drag and drop files to insert images, support image upload (also taking photos on mobile devices). Custom built toolbar. Supports mobile devices.
This jQuery plugin generates sparklines (small inline charts) directly in the browser using data supplied either inline or via JavaScript. The plugin is compatible with most modern browsers.
Simple jQuery plugin for creating a character counter for textareas and text inputs.
HTML5 audio and video player in pure HTML and CSS.
Edit in place plugin for jQuery. With a few lines of JavaScript code you can click and edit the content of different HTML elements.
A cross-browser flip effect plugin for jQuery which allows you to flip (left, right, top, bottom and revert) whichever HTML element you want. Supports RGBA colors. Works for every modern web browser (IE 8+).
Revealator is a jQuery plugin for adding effects to elements that enter the viewport. Simple and easy to use.
A jQuery/Zepto plugin for background slideshows.
Delays loading of images in long web pages. Images outside of the viewport are not loaded until user scrolls to them.