Cocoalicious is a del.icio.us client for Mac OS X. It acts as a desktop interface to your del.icio.us bookmarks
Cocoalicious is open source, available under the terms of the BSD License. If happen to have an iPod (and who doesn't these days?) and you'd like to support Cocoalicious development, you might consider purchasing an $8 license for PodWorks, my iPod song transfer application. Or, if you have an iPhone and use Twitter, you might check out Birdfeed, my iPhone Twitter client.