Now we already have: Python Cheat Sheet jQuery Cheat Sheet NodeJS Cheat Sheet PHP Cheat Sheet Ruby Cheat Sheet Javascript Cheat Sheet Java Cheat Sheet ActionScript Cheat Sheet CSS Cheat Sheet Git Cheat Sheet SVN Cheat Sheet MySQL Cheat Sheet Regex Cheat Sheet Linux Cheat Sheet HTML Cheat Sheet HTML-DOM Cheat Sheet mod_rewrite Cheat Sheet And 300+ More