Immutable provides Persistent Immutable
Product Tour is a responsive tour snippet, with a step-by-step guide to help users understand how to use your website.
ReadRemaining.js is a jQuery plugin that allows you to show the user how long it will take to read the article considering the speed in which the user is scrolling.
Oh Snap! is a simple jQuery/Zepto notification library designed to be used in mobile apps.
The main idea is not to pollute DOM with all used tags. Instead of that - it splits the list to clusters, then shows elements for current scroll position and adds extra rows to top and bottom of the list to emulate full height of table so that browser shows scrollbar as for full list
Sprint.js is a high-performance, lightweight DOM library for modern browsers. Sprint notably shines on bandwidth and resource constrained devices such as phones and tablets.
Sprint has a familiar, jQuery-like chainable API.
Layzr.js is a small, fast, modern, and dependency-free library for lazy loading images.
jQMeter is a simple, light-weight jQuery plugin that allows you to display an animated horizontal or vertical progress meter. Just pass in the goal and amount raised or completed, and the rest is optional
Embed.js is a jQuery plugin for converting text emojis into image-based emoticons, also supporting an automatic media embedding system for multimedia URLs.