Haris Zulfiqar

WordPress tooltip plugins lets you add tooltips to plain text and links on your post and pages.
It offers a tinyMCE shortcode GUI which will guide you through the entire process of a tooltip.
This plugin uses jQuery tipTip authored by Drew Wilson http://code.drewwilson.com/entry/tiptip-jquery-plugin.
You can also add tooltips manually by following the pattern below:
<pre><code>[tooltip content="This will show in a tooltip" url="This will make tooltip a link"]Hover over me for tooltip[/tooltip]
</code></pre>
Url is optional. If URL is added, it will render a link otherwise it will be a plain text.

WordPress Tooltip

WordPress tooltip lets you add tooltips to content on your posts and pages.

inventive3d

Inventive gravity forms tooltips, transforms gravity forms description into a tooltip. 
When you hover on a gravity forms input, a tooltip will show.
<a href="http://www.artieinventive.it/bottega/shop/idee-per-matrimonio/album-fotografico-in-legno-con-scritte-personalizzate/" rel="nofollow ugc">Demo</a>
To do: administrative options (colors, dimensions, position etc)

Inventive gravity forms tooltip

It works without problem with gravity forms, inventive woocommerce discounts, inventive woocommerce text customizer.
It transforms description field into a tooltip, simple as that.



Useful

Inventive gravity forms tooltips, transforms gravity forms description into a tooltip.

WordPress Tooltip vs Inventive gravity forms tooltip