Cheat Sheet

CSS Cheat Sheet

CSS Shorthand Guide

Debian GNU/Linux Reference Card - The 101 most important things when using Debian GNU/Linux

Firefox Cheat Sheet

Google Cheat Sheet

HTML Cheat Sheet

Java Syntax Cheat Sheet

Keyboard Shortcuts - a list of the most common keyboard shortcuts in Firefox, and the equivalents in Internet Explorer and Opera.

Linux command line tips

MySQL Cheat Sheet

perlcheat - Perl 5 Cheat Sheet

PHP4 Reference Card - (PDF-fil)

Regular Expressions Reference

SQL Cheatsheet

Subversion Cheat Sheet

The One Page Linux Manual - (PDF-fil)

Thunderbird Cheat Sheet

Visibone Web Designer's HTML Card

Wordpress 3.0 Cheat Sheet - All short codes

Wordpress Help Sheet