Webshim – polyfills jQuery with many HTML5 features
Alexander Farkas
modular capability-based polyfill loading libary, which extends jQuery with HTML5 features in legacy browsers
Jan Paepke
The jQuery plugin for magical scroll interactions.
Totodunet
simple jQuery plugin with methods scrollBottom(), scrollRight(), scrollCenter() and many more. You can put in parameter values, DOM element and options for animation.
Ahmet Katrancı <ahmet@katranci.co.uk>
Sticky positioning polyfill for jQuery
Garrett Nay
A jQuery plugin that takes an element out of its place in the DOM while keeping it in the same position.
Tobias Lindig
Calculate the position of an element relative to another element or event. It has also functionality to handle collision within the viewport of a given container. It does not manipulate CSS or DOM, it only calculates values. It is a basic technology to support implementation of tooltips, popups, popovers, scrollspies, sticky navi and many more.