A tidy repository of jQuery plugins
http://www.unheap.com/
Tag Archives: ui
GluePrint – Visually Align with Ease
Turn any mockup into a floating guide, and visually align pixels with ease.
http://glueprintapp.com/
uilang
Creating custom user interface components, adding some interactivity to your site, building prototypes—the possibilities provided by uilang’s simple class manipulation logic are endless.
http://uilang.com/
iconmonstr – Free simple icons for your next project
http://iconmonstr.com/