Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page.

Google Web Toolkit (GWT) is an open source Java software development framework that makes writing AJAX applications like Google Maps and Gmail easy for developers who don't speak browser quirks as a second language.

Small collection of tools for use with textareas (or input fields).

This combination of JavaScript and CSS will hide checkbox and radio inputs that have a class = "crirHiddenJS", an id, and a proper label tag. This will allow you to style the label however you wish using CSS, and the actual input control will be hidden...

WP Wetfloor allows you to add reflections (a.k.a. the wetfloor effect) to images on your Wordpress blog.

dhtmlxTreeGrid is professionally designed JavaScript UI component that combines tree view and editable grid. It is based on our DHTML control dhtmlxGrid, and enables both hierarchical and tabular data presentation. Ajax support and rich JavaScript API ...