A selection of 29 awesome, printable quick references for a variety of languages and web technologies. These and more are also available at Cheatography.
A cheat sheet for NaNoWriMo (write a 50,000 word book in November!), with some dramatic situations, the Hero's Journey, a word count tracker and some inspirational quotes to keep you going.
The second version of the Regular Expressions Cheat Sheet, a quick reference guide for regular expressions, including symbols, ranges, grouping, assertions and some sample patterns to get you started.
The second version of the mod_rewrite Cheat Sheet, a quick reference guide for mod_rewrite, with rewrite flags, regular expression syntax and sample rules.
The second version of the PHP Cheat Sheet, a quick reference guide for PHP, with functions references, a regular expression syntax guide and a reference for PHP's date formating functions.
The second version of the CSS Cheat Sheet, a quick reference guide for CSS, listing selector syntax, properties, units and other useful bits of information.
This A4 reference lists the various functions available in Microsoft SQL Server, and demonstrates the creation of stored procedures, triggers and functions.
HTML is the language of the web. It is the semantic support on which websites depend. This A4 reference lists the various tags available to the web designer, as well as a selection of useful character entities, attributes and events.
Regular Expressions are very powerful, and many people find their unusual syntax hard to get to grips with. This A4 reference serves as a guide to regular expression patterns and options.
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. This reference sheet contains an overview of the most often used microformats.
World of Warcraft may not be a web design, development or marketing topic, but that doesn't mean I don't need a cheat sheet for it. I've just started playing and can't remember all the slash commands and shortcut keys, so this is a simple quick reference for just that.
A quick reference guide for Ruby on Rails, containing the default directory structure, predefined variables, methods, reserved words and regular expression syntax.
I'm forever looking up character codes, so this cheat sheet was a no-brainer. This contains a list of the assigned character codes in HTML, with an example of how they are displayed, and description.
A quick reference guide for mod_rewrite, including server variables, flags and regular expression syntax. Also includes examples of commonly-used rules.