Zen Coding - Hi-speed HTML CSS
http://code.google.com/p/zen-coding/
How to Crash Internet Explorer 6 and 7
http://www.catswhocode.com/blog/6-html-and-javascript-codes-to-crash-ie6
HTML 5 - Markup Only
http://www.w3.org/html/wg/markup-spec/
PHP email attachment
http://webcheatsheet.com/php/send_email_text_html_attachment.php
WYMeditor: web-based XHTML Rich Text WYSIWYG Editor
http://www.wymeditor.org/en/
HTML Emails - Taming the Beast
http://www.thinkvitamin.com/features/design/html-emails
RSSxl - Convert an HTML Web Page to RSS
http://www.wotzwot.com/rssxl.php
.htaccess Online Generator
http://www.htaccesseditor.com/en.shtml
Convert HTML to Excel - with PHP
http://www.visualbuilder.com/showCode.php?id=&scd_id=1101
The CSS and XHTML Lab | 456 Berea Street
http://www.456bereastreet.com/lab/