P-Loading is a powerful jQuery plugin, for faster and easier web development, which allows you to have a main loading mask platform that is able to use many different spinners by installing P-Loading add-ons.
A tutorial on how to create a loading spinner made with inscribed polygons and animated with Rebound spring motion.
fakeLoader.js is a lightweight jQuery plugin that helps you create an animated spinner with a fullscreen loading mask to simulate the page preloading effect.
spin.js is an animated CSS3 loading spinner with VML fallback for IE. It dynamically creates spinning activity indicators that can be used as resolution-independent replacement for AJAX loading GIFs.
Also you can use spin.js as a jQuery plugin.
jQuery Waiting is a jQuery plugin to generate spinners and loaders, without images, canvas, or other nonsense. jQuery Waiting uses standard, widely accepted css to style your waiting spinner, and a little jQuery to make it function