jsPlumb is a jQuery plugin for visually connecting HTML elements on a web page.
It uses a HTML5 canvas element when supported and Google's ExplorerCanvas script to support older browsers.
The styles, shapes of the wires and "the position of the connection" can be customized easily.


Easy is a CSS/HTML/JavaScript framework started as a personal project and then grew into something more. The idea behind it is to reduce the amount of time spent on setting up the basic master HTML template by reusing the same coding techniques.

In this post we have a selection of jQuery plugins and tutorials for enhancing and aiding in the development of the dreaded form area. There are the always important validation plugins, plugins that will give the form added functionality (stretching text-areas, auto-tabbing...) and also plugins that will help you to style the form exactly as you need...and more.
http://speckyboy.com/2009/08/26/20-jquery-plugins-and-tutorials-to-enhance-forms/

This plugin adds the ability to update multiple elements with a single Ajax response.
http://www.webresourcesdepot.com/data-encryption-with-javascript-jcryption/

Ever wanted those flash iPhone on/off toggle switches on your webpage? Love jQuery? Well then I've got something special for you. iphone-style-checkboxes implements the iPhone toggles as replacements for standard HTML checkboxes. Simply run the script and your site will be updated with these specialized controls. Best of all, the underlying checkbox is not touched and backend system will never know the difference. The change is purely visual.
http://awardwinningfjords.com/2009/06/16/iphone-style-checkboxes.html
Farbtastic is a jQuery plug-in that can add one or more color picker widgets into a page through JavaScript. Each widget is then linked to an existing element (e.g. a text field) and will update the element's value when a color is selected.
http://acko.net/dev/farbtastic