Loading Layer is a lightweight jQuery plugin that creates a loading layer overlaying any Html elements.
Small jQuery Loading Overlay Plugin - Loading Layer
Simple Loading Overlay with jQuery and CSS3 Animations - JLoadingOverlay
Simple jQuery Loading Spinner/Overlay Plugin - Loader
Easy Page & Element Loader Plugin with jQuery - loader.js
Draw and Animate (Pre)Loaders with jQuery and Canvas - CanvasLoader
Customizable jQuery Loading Overlay & Spinner Plugin - Waiting
jQuery Plugin For Custom Loading Overlay & Indicator - Show Loading
jQuery Plugin To Making Loading Overlays On Given Elements - Wait Overlay
Fullscreen Loading Indicators with jQuery and CSS3 - HoldOn.js
Customizable AJAX Loader Plugin For jQuery - Mask Loader
3D Cube Loader with jQuery and CSS3 - Overlay Cube
Image Loading Animation Plugin with jQuery and CSS3 - LoadGo
Minimalist Loading Overlay Plugin With jQuery - overlay.js
Custom Loading Indicator Plugin with jQuery and Font Awesome - faloading
Custom Loading Spinner & Overlay Plugin For jQuery - qspin.js
Minimalist Loading Overlay Plugin For jQuery - LoadingBox
Easy Customizable Loading Mask Plugin With jQuery - mloading
AJAX Asynchronous Loader Plugin For jQuery - Loading.js
Fullscreen Loading Modal / Indicator Plugin For jQuery - loadingModal
Minimal jQuery Loading Overlay & Spinner Plugin - Easy Overlay
Small Loading Modal Overlay Plugin With jQuery - loadingBlock
jQuery Plugin To Handle CSS3 Powered Spinners & Loaders - Loading.js
Easy To Customize jQuery Loading Indicator Plugin - babypaunch.spinner.js
Responsive Custom Loading Overlay/Mask Plugin - jQuery p-loading
jQuery Plugin To Add A Loading Overlay On Any Elements - Loading
Cross-browser Loading Indicator Plugin - jQuery showLoading.js
Simple Flexible Loading Overlay Plugin With jQuery - loadingoverlay.js
Highly Customizable Loading Mask Plugin For jQuery - busy-load