Arvind Gupta
Ajaxify your site out of the box, instantly.
jQuery Lazy – Delayed Image and Background Loader
Daniel 'Eisbehr' Kern
The fast and lightweight Lazy plugin for jQuery loads specified images and backgrounds in view after the page itself and speed up your loading time through this. Images outside of the visible area will only be loaded when the user scrolls to them in any direction. This will not only increase the page loading speed, it will even decrease your traffic.
Ben Plum
A jQuery plugin for faster page loads. Part of the formstone library.
RESS.io
Lazy Load XT is mobile-oriented, fast and extensible jQuery plugin for lazy loading of images, videos and other media with built-in support of jQueryMobile framework. It improves performance of website by loading visible media elements only, and elements below the fold are loaded after page scroll. The plugin has many options, supports callbacks and special lazy events, that allows to have different loading effects (e.g. fade in and spinner effects). Examples of plugin and its addons include ajax, background images, infinite scroll, horizontal scroll, iframe-based widgets (YouTube, Vimeo, Google Maps Engine Lite, Facebook recommend button, Google+ profile), html5 video, responsive images with retina support (srcset and picture polyfills), social widgets (embedded tweet, Twitter share button, Google Plus badge and share button, Facebook like and recommend buttons, Facebook post comments), load all images before print, etc. Tested in IE 6-11, Chrome 1-31, Firefox 1.5-27.0, Safari 3-7, Opera 10.6-18.0, iOS 5-7, Android 2.3-4.4, and WP8. Requires jQuery 1.7+, Zepto 1.0+, or DOMtastic 0.7.2+.