LICEcap can capture an area of your desktop and save it directly to .GIF (for viewing in web browsers, etc)
MYO
MYO lets you use the electrical activity in your muscles to wirelessly control your computer, phone, and other favorite digital technologies.
Firebox.com
Kind of like thinkgeek.com; lots of neat gadgets and whatnot.
Technical Machine / Tessel
Tessel is a microcontroller that runs JavaScript. Use it to easily make physical devices that connect to the web.
SublimeGit
Integration plugin for git within Sublime Text 2.
jQuery Highlight Plugin
It will probably not be a big surprise that jQuery Highlight plugin can be used to highlight pieces of text on a page.
PHP: The Right Way
There’s a lot of outdated information on the Web that leads new PHP users astray, propagating bad practices and insecure code. PHP: The Right Way is an easy-to-read, quick reference for PHP popular coding standards, links to authoritative tutorials around the Web and what the contributors consider to be best practices at the present time.
Learn X in Y Minutes
See samples of different programming language and their syntax, written in those languages.
AngularJS Tutorial
This tutorial will guide you through the process of creating a full-stack application.