Select2 is a jQuery based replacement for select boxes. It supports searching, remote data sets, and infinite scrolling of results.
AngularJS lets you extend HTML vocabulary for your application. The resulting environment is extraordinarily expressive, readable, and quick to develop.
Worth a look.
gmaps.js allows you to use the potential of Google Maps in a simple way.
No more extensive documentation or large amount of code.
Not much organized but just scroll through these nuggets and I bet you will find something interesting.
This piece of work by Zurb may come in handy.