Will hurt your feelings* (And help you code better)

Web FontFonts are high quality, screen-optimized fonts designed specifically for web use

IxEdit is a JavaScript-based interaction design tool for the web. With IxEdit, designers can practice DOM-scripting without coding to change, add, move, or transform elements dynamically on your web pages. Especially, IxEdit must be useful to try various interactions rapidly in the prototyping phase of your web application.

A simple online usability test that helps you identify the most prominent elements of your user interfaces.