Webupon

W3C Validator

http://www.w3.org/

The W3C (World Wide Web Consortium) has two validators, one for HTML/XHTML, and one for CSS. You can copy and paste your code directly into them, upload a HTML file or link to a file you’ve already published.

W3Schools

http://www.w3schools.com/

Another W3C site that teaches would-be designers the basics of a whole range of languages from XHTML to XSLT. Is a good reference for those times when you get a little stuck.

Google Analytics

http://analytics.google.com/

A great free tool to monitor traffic on your site or a client’s site. It is, in fact, better than many commercial options out there. Provides a multitude of analysis tools from visitor trends to geolocation, and even computer resolution.

Wordpress

http://wordpress.org/

A powerful free online Content Management System. You can host pages in your own web space or for free on Wordpress’ servers.

CSS Layout Generator

http://www.csscreator.com/

A free form-based tool to quickly and easily create CSS layouts for you websites.

.htaccess Tools

http://www.htaccesstools.com/

A .htaccess file is a text file that configures an Apache web server. This is a great collection of tools to automate the process of htaccess.

Stock Xchng

http://sxc.hu/

A large collection of royalty-free stock imagery for your websites. Free for non-profit websites.

Kuler

http://kuler.adobe.com/

Easily picks modern colour schemes for you when your in need of an inspiration fix.

NicheBot

http://www.nichebot.com/

Excellent free SEO service to maximise your search engine visibility. Comes with keyword suggestion and analyisis tools.

What The Font!

http://new.myfonts.com/WhatTheFont/

Ever looked at a font and wanted it for your designs but just don’t know what its called? Just upload an image of the font here and it will give a list of possible matches. Also available as an app for the iPhone.