jQuery Fadeloader

The jQuery Fadeloader plugin lets you easily implement a preloader to your site or section, using a cascade fade in effect to show specific blocks of content.

ToggleButton

Automatically enable or disable a button, add loading messages, or swap classes – all without the verbose Javascript.

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

ajaxloader

This is a jQuery plugin to show a loader on every ajax hit on the server with different themes.

jQuery Simple Loader

Small plugin for create animated loader over target element.

Is Loading – Show feedback to your visitors

Easy jQuery plugin to show visual feedback when loading data or any action that would take time. Also can disable form elements and put an overlay an specified area or whole page.