Humans.txt: This is an initiative that aims to add a txt file to all websites letting world know who the people are behind a website.
jQuery: Tutorial on creating custom animations using the .animate() method.
PHP: 20 ways to save kittens and learn PHP, an article on best practices and common sense.
TextMate: TextMateUser is a new site dedicated to all things TextMate which is still my favorite editor.
UX: Little Big Details is a site that focuses on the small details behind web/desktop applications that make a big difference in UX.
Wirify: A bookmarklet that converts the current website to a wireframe in one click.