* ASCII Codes Cheat Sheet
* Character Entity References in HTML 4 and XHTML 1.0
* HTML Character Entities Cheat Sheet - PNG
* HTML Character Entities Cheat Sheet - PDF
* HTML special character reference
* HTML - Special Entity Codes
* Reference Special Characters
* Special ASCII HTML Character Codes
* XHTML Character Entity Reference
ASP
* ASP / VBScript Cheat Sheet - PNG
C# and VB.NET
* C# and VB.NET Comparison Cheat Sheet - PDF
* Cheat Sheet - Casting in VB.NET and C#
* Firefox Keyboard Shortcuts - PDF
* Firefox Shortcuts Sheet
* Mozilla Firefox Cheat Sheet
* Mozilla Thunderbird Cheat Sheet
* Keyboard Shortcuts
Google
* Gmail Shortcuts (printable cheatsheet)
* Google Advanced Operators (Cheat Sheet)
* Google Cheat Sheet (Version 1.06) - PDF
* Google Cheat Sheet - auch als PDF
* Google Cheat Sheets - auch als PDF
* Google Help : Cheat Sheet
HTML/XHTML
* A Simple Guide To HTML - Cheat Sheet
* HTML & XHTML Tag Quick Reference
* HTML Cheat Sheet
* HTML Cheatsheet
* HTML Entities
* HTML CODES CHEAT SHEET
* XHTML
* HTML Cheat Sheet
* XHTML Cheat Sheet v. 1.03 - PDF
* HTML DOM - Quick Reference Card - PDF
* XHTML 1.0 frameset - Quick Reference Card - PDF
* XHTML 1.0 strict - Quick Reference Card - PDF
* XHTML 1.0 transitional - Quick Reference Card - PDF
* XHTML Quick Reference Guide For XHTML 1.1
Java
* Java 1.5 Cheat Sheet
* Java Quick Reference - PDF
* JSP Quick Reference Card
* (JSPª) SYNTAX version 1.1
* (JSP™) SYNTAX version 2.0
* ActiveRecord Relationships - Ruby on Rails cheat sheet guide - PDF
* Ruby Cheatsheet
* RubyOnRails-Cheatsheet - PDF
* Ruby on Rails Cheat Sheet - PNG
* Ruby on Rails Cheat Sheet Collectors Edition
* Ruby on Rails cheat sheet guide - PDF
* Ruby quick reference
* Ruby Cheatsheet
* Threadeds Ruby Cheat Sheet
* What Goes Where? - Ruby on Rails cheat sheet - PDF
Unix/Linux
* LINUX Administrator’s Quick Reference Card - PDF
* Linux Shortcuts and Commands
* quick_reference [GNU screen]
* Unix Cheat Sheet
* The One Page Linux Manual - Version 3 - PDF
* TCP Ports list (3498 ports in list)
* Treebeard’s Unix Cheat Sheet
* Unix command cheat sheet - common commands for the unix command line
* Essential Vim keyboard shortcuts Cheat Sheet
* VIM Quick Reference Card
* VIM Quick Reference Card
* Vim Commands Cheat Sheet
Weblog
* Blogger Cheatsheet - PDF
* Quick Reference Chart - ExpressionEngine Documentation - PDF
* TypePad Cheatsheet - PDF
* Movable Type Cheatsheet - PDF
* MovableType
* WordPress Cheatsheet - PDF
* WP - WordPress Cheat Sheet für Theme Tags und Plugin-API - PDF
Windows
* An A-Z Index of the Windows NT/XP command line
* Graphical vi-vim Cheat Sheet and Tutorial
* Power Point 2000 - Keyboard Shortcuts
* POWERPOINT 2003 - Quick Reference Card
* Quick Reference Card for Windows®
* TCP Ports list (3498 ports in list)
* Windows - Alt Key Numeric Codes
* Windows XP Service Reference - PDF
* XP Keyboard Shortcuts: version 2 - PDF
XML
* Fusebox 4.1 XML Cheat Sheet
* MathML Reference - PDF
* VoiceXML Reference - PDF
* XML TopicMaps 1.0 - Quick Reference Card - PDF
* XML Quick References - PDF
* XML Schema 2001: children - parents - PDF
* XML Schema 2001: elements - attributes - PDF
* XML Schema 2000/10 - PDF
* XML Schema - Structures Quick Reference - PDF
* XML Schema - Data Types Quick Reference - PDF
* XSL FO Reference - PDF
* XSLT Quick References - PDF
* XSLT Quick Reference Card - PDF
* XSLT Reference