You are a developer so you've more than likely already got your favourite code editor.
VIM You are a minimalist at heart, but you value raw power
Emacs You wanted the most powerful, and most extensible editor on Earth, and you can write a formal mathematical proof that Emacs is that editor
Nodepad++ You like the simplicity of Notepad, but you wanted a bit more.This code lab has mainly HTML5 and Javascript code editing.