W3C – the World Wide Web Consortium
W3 Validator – validate your web pages.
HTML 4 in Netscape and Explorer ... a great resource documenting differences in support. More wisdom from Webreference.com.
Yuriko Ienaga lists every single HTML 4 tag, and shows which browsers support it (or don’t) at www.ncdesign.org/html/list.htm. An outstanding effort.
HTML 4.0 as handled by Navigator and Explorer. An earlier piece on the same subject.
Stuck With Old Browsers Until 2003? Jakob Nielsen fears that we will be.
Amazing HTML – covers most areas of webdesign from CSS to HTML to basic CGI, FTP, and more; geared toward beginning to intermediate web authors
Authoring Valid HTML – builder.com reviews various validators
Best Viewed with Any Browser – campaign to eliminate Netscape (or Microsoft) dependance from web design; worth seeing
Bobby – accessibility/browser compatibility checker
HTML Compendium – originally a simple listing of HTML elements, it has expanded to include CSS and an extensive “Notes” section.
WDG’s Listing of HTML and CSS References, covering HTML 3.2 and HTML 4.0, CSS
HTML Standards Compliance: Why Bother? – from the Web Developer’s Virtual Library
How to Achieve Web standards and quality on your site – published by the W3C QA Interest Group, this contains several rebuttals to the concerns of change-resistant managers and clients, and also displays properly written DOCTYPE
declarations for the versions of HTML and XHTML in common use. A more complete list of valid DOCTYPE
declarations is also available from the same source.
A List Apart – high signal, low noise mailing list and weekly magazine for people who make websites.
Project Cool Developer Zone – tutorials and advanced topics for developers
Useit.com – Jakob Nielsen on developing usable sites. Nielsen is a web usability consultant and former Sun Microsystems Distinguished Engineer.
The Web Developer’s Virtual Library
The Webmaster’s Reference Library
WebMonkey – Hotwired’s help and tutorials