The contextMenu Plugin was designed for web applications in need of menus on a possibly large amount of objects. Unlike implementations as a beautiful site’s or trendskitchens’ this contextMenu treats the menu as the primary object. That means, that a single menu is defined that can be used by multiple objects.
SelectBoxIt (GitHub: gfranko / jQuery.selectBoxIt.js, License: MIT) by Greg Franko is a select box replacement that uses progressive enhancement and has some notable features: