Cheat Sheets are useful because Web Developers today need to remember more things to be effective doing their job than most people can manage. Most cheat sheets are designed to be printer friendly, so you can have them laying around on your desk as quick reference cards. Here is a collection of useful cheat sheets specifically for front end web development that will help you with HTML, JavaScript, Python, Ruby-on-Rails, ajax, Adobe Photoshop, Adobe Illustrator, CSS3, HTML5, XHTML, XML, MooTools, ASP, VB Script, Prototype, MySQL, jQuery, SEO, htaccess, mod_rewrite, 3D Max, Cinema 4D R8, PHP and CSS.