ThemeRoller is a web app that offers a fun and intuitive interface for designing and downloading custom themes for jQuery UI. You can find ThemeRoller in the "Themes" section of the jQuery UI site, or by following this link: jQuery UI ThemeRoller
visual layout editor based on Blueprint & jQuery! This is version 0.5, last updated on April 27, 2008. This project was built by Christian Montoya, and exists both as a useful tool for CSS designers and as proof that a visual layout editor is possible to acheive with clean CSS & semantic HTML.
Edit html, css, and javascript snippets in separate boxes with a live preview. Quickly switch between various javascript libraries and library versions via a dropdown.
Dirty Markup is a web-based HTML Tidy interface. You can use it to harness the power of Tidy without ever leaving your web browser.
Nice (jquery) interface
Drawter is a tool written in JavaScript and based on jQuery library. It provides you the possibility to literally draw your website's code. It runs on every single web-browser which makes it really useful and helpful. Each tag is presented as a layer you have drawn.
Currently Drawter is available in Pro version, which means that it is intended for webmasters use only - knowledge of HTML and CSS is required. Drawter is not a tool for laymen, for the time being, but the whole team behind the project is putting every effort to launch a new version called "Amateur". Soon you will be able to draw your websites without any knowledge of HTML or CSS. Launching 2010.