jQuery UI Position

Positions elements relative to other elements.

ScrollMagic

The jQuery plugin for magical scroll interactions.

Textarea Helper plugin

Makes it possible to query the height of the textarea content and the XY coordinates of the caret position

jQuery.PositionCalculator

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.

jQuery.positionSticky

Sticky positioning polyfill for jQuery

jQuery Background Position Animation

This plugin allows the position of a background image to be animated. * Specify positions by name or pixel location. * Apply standard speed and easing settings.

jQuery Takeout

A jQuery plugin that takes an element out of its place in the DOM while keeping it in the same position.

Sticky

The jQuery plugin allows the HTML-element to be on the screen even after scrolling

stickyfloat

Makes it possible to have a fixed position element that is relative to it’s parent. In other words, floats an element along while scrolling…but does this good.