TinyTip is a very small tooltip jQuery plugin without using CSS. TinyTip does not force any styling over your tooltips, you can style your tooltips as desired.
It also allow you to display any content, texts, html and Dom elements inside your tooltips.
Tipso is a simple jQuery tooltip plugin that displays a responsive, animated, fully customizable tooltip when the visitor hovers over (or clicks on) the matched element.
awTooltip is a tooltip plugin created with css and jQuery. It's possible to show tooltips right, left, top or bottom of the elements. Also you can use colorful tooltip styles.
WebUI Popover is a lightweight jQuery popover plugin that enchance the popover plugin of Bootstrap with some awesome new features. It works well with Bootstrap.
A drop in extension replacing error labels from jQuery Validation plugin with Bootstrap tooltips.
popModal is a jQuery plugin for showing tooltips, titles, modal dialogs
jBox is a powerful and flexible jQuery plugin, taking care of all your popup windows, tooltips, notices and more.
DarkTooltip is a simple customizable jQuery tooltip plugin with confirm option and 3d effects.
qTip2 is the second generation of the advanced qTip plugin for the ever popular jQuery framework.
qTip2 provides you with tonnes of features like speech bubble tips and imagemap support, and best of all... it's completely free under the MIT/GPLv2 licenses!
PicTip is a jQuery plugin that adds handy tooltips to your images, slideshows, sliders and more.
This is a simple tooltip menu that will show a tooltip submenu when hovering over an item. The submenu will either appear above or below the main menu, depending on where more space is available.
Using Modernizr’s touch detection, the menu will either react on hover or on click. Example media queries show how to adjust the style for smaller screens.
Tooltipify plugin creates a slide in, stylable tooltip to replace the default browser tooltip. Show and hide events are customizable. Defaults are "mouseover" and "mouseout".