• - Subversion Cheat Sheet
• - Regular Expressions Cheat Sheet (v2)
• - mod_rewrite Cheat Sheet (v1 and v2) ... [for Apache server] See also URL Rewriting for Beginners
• - CSS Cheat Sheet (v! and v2)
• - SQL Server Cheat Sheet
• - HTML Cheat Sheet
• - HTML Character Entities Cheat Sheet (list of the assigned character codes in HTML, with an example of how they are displayed, and description)
• - Regular Expressions Cheat Sheet (v1)
• - Microformats Cheat Sheet (Microformats "allow us to add more information to our documents on the web, embedding semantic data in web pages that can then be parsed and used in other applications.")
• - World of Warcraft Cheat Sheet
• - Ruby on Rails Cheat Sheet
• - PHP Cheat Sheet (v1)
• - ASP / VBScript Cheat Sheet
• - JavaScript Cheat Sheet
• - MySQL Cheat Sheet
• - RGB Hex Colour Chart

There's another HTML Cheat Sheet plus a plethora of web design and development articles over at Webmonkey (and, undoubtedly, many more HTML cheat sheets elsewhere).

In a slightly different vein, WATS in Canada has HTTP Error Codes (and what they mean) for when a web server goes awry?

Knowing what these cryptic web error codes mean should enable you (as a developer or administrator) to fix the problem, or create custom error pages. And knowing what they mean might even be of interest to web browser end users.

WATS also has this collection of articles, tutorials and guidelines for developing accessible web sites. (There are many more of these on my own web site here or its mirror page here.)

But there's more!

PLEASE READ ON...