Erff Json Tree

Erff json tree is a small jquery plugin (minified version is only 3.3kb) that can create a treeview from json data with lazy loading support

Dynatree

Dynatree is a JavaScript dynamic tree view plugin for jQuery with support for persistence, keyboard, checkboxes, drag’n’drop, and lazy loading. Note: The GitHub repository is currently only a stub for the SVN repository on https://code.google.com/p/dynatree/.

jQuery Lazy Script

jQuery plugin for lazy loading scripts to reduce the page loading time. lazy types are: scroll,visible,delay,click,hover

jQuery EasyTree

Free jQuery plugin for creating tree menus, designed to be easy to use but offer powerful options. Features include persistance, drag ‘n’ drop, lazy loading and themes

Imageloader

Find out when your images have loaded – imageloader provides callbacks, chainable syntax and control over whether images are loaded syncronously, asynchronously or asynchronously with a maximum number of requests

Dynamic Widget

Dynamic Widget is a plugin for JQuery UI that automates lazy loading JS and CSS for your JQuery UI widgets without the need to worry about includes.

jQuery Lately

A very lightweight jQuery plugin to lazy load images.