A utility for OSX which lets you use your iPhone as an access key to unlock your screen. It uses Bluetooth Low Energy, so battery drain is negligible.
Nice origami/folding special effects for DOM elements. Mobile-friendly.
A proxy to get around same-origin policies when loading data across domains.
A quick and dirty description of Fast Fourier Transform.
Awesome snowflake macro photography using a jerry-rigged point-and-shoot camera plus a reversed telephoto lens.