iUI is a framework consisting of a JavaScript library, CSS, and images for developing iPhone webapps
Ruby commandline lib for smush.it
Implementation of sha1, md5 and md4 in JS
Generate HTML/CSS code and images for rounded corners.
Free (as in beer) patterns for webdesign
jGrowl is a jQuery plugin that raises unobtrusive messages within the browser, similar to the way that OS X's Growl Framework works.