The world wide web consortium (W3C)
The World Wide Web Consortium (W3C) is an international community where Member organizations, a full-time staff, and the public work together to develop Web standards. Led by Web inventor Tim Berners-Lee and CEO Jeffrey Jaffe, W3C’s mission is to lead the Web to its full potential. Contact W3Cfor more information.
The W3C markup validation service
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc. If you wish to validate specific content such as RSS/Atom feeds or CSS stylesheets, MobileOK content, or to find broken links, there are other validators and tools available. As an alternative you can also try our non-DTD-based validator.
Tizag was designed to teach beginner web programmers how to use HTML and CSS. It’s simple, straight to the point structure makes it a perfect reference for even the most seasoned coder.
A great introduction to web standards and good quality web design. The opera web standard curriculem a distilled database of knowledge for web designers.
Google code university – HTML, CSS, and JavaScript from the Ground Up
Are you looking for a basic understanding of how UIs are created on the web or who wants to brush up outdated UI development knowledge? Or maybe you’d like to learn more about the medium you’re designing for and gain basic tools for prototyping designs? Do you want a better understanding of the web and how Google makes the pages that are its face to the world? If so, “HTML, CSS, and JavaScript from the Ground Up” is for you.
The W3C markup validation service
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc. If you wish to validate specific content such as RSS/Atom feeds or CSS stylesheets, MobileOK content, or to find broken links, there are other validators and tools available. As an alternative you can also try our non-DTD-based validator.
A question-and-answer forum where some of the brightest minds in the web design community give up their free time to help those who have got hopelessly stuck.
Joomla is an award-winning content management system (CMS), which enables you to build Web sites and powerful online applications. Many aspects, including its ease-of-use and extensibility, have made Joomla the most popular Web site software available. Best of all, Joomla is an open source solution that is freely available to everyone.
WordPress is web software you can use to create a beautiful website or blog. We like to say that WordPress is both free and priceless at the same time.
Respelt – Website spell checker
Great little tool for spell checking web pages and rss feeds, can also register to receive alerts on potential spelling mistakes and can even have your own customizable dictionary
The tabifier is a great little web script for handling compressed or hard to read code, run the code through the program and it will make it easier to read..
The tabifier currently supports CSS, HTML, and C Style code;
Please note: If you put in invalid/broken code, the output will probably end up quite wrong, also do not trust the output for use on a production website before checking the code thoroughly (the script isn’t perfect)