The simply the best collection of tooltip scripts
Uses the title attribute to display a tooltip above, below, to the left or to the right of the element. It's lightweight and is completely customizable via CSS.
The tooltip script offers a variety of options for source and type of tooltip content and flexible control of positioning, formatting and display. The JavaScript is object based, avoids the use of global variables and provides accessibility and device independent features. Ajax functionality is optional.
A lightweight responsive jQuery tooltip plugin with very nice styling options.
The default browser tooltip that displays the value of the title attribute is replaced with a "poshier" version. Create a scalable tooltip by using a background image for the tooltip body.
A JavaScript tooltip framework that is free, open source and comes with different styles. Opentips can automatically download their contents via AJAX. Position the tooltip exactly where you want it.
Tehter is a JavaScript library for efficiently making an absolutely positioned element stay next to another element on the page.