I like to build things. Here are some nerdy things I have made.
Rainbow is a simple, lightweight code syntax highlighting library written in Javascript.
MMLX is a music programming language used to make NES Chiptunes. It extends from Music Macro Language.
Sonic is a fast, lightweight PHP 5.3+ framework.
Loop.ly is a simple HTML5/flash embeddable audio player.
ChromePHP is a console logging extension for Google Chrome that let's you debug PHP applications.
Q For Later is a read later/view later/watch later site that lets you queue up content to view at a later point in time.
HTML Muncher is a command line utility that rewrites classes and ids in CSS, HTML, and JavaScript files in order to save bytes and obfuscate your code.