Ryan Imel

This plugin slows down the dropdown effect of the WordPress Admin Bar. By default (as of WordPress 3.1.x) the WordPress Admin Bar reacts to any mouseover by dropping down menu items. With this plugin you have to hover over the menu items deliberately in order for them to display.
No configuration necessary — just enable it and you’re good to go.

Admin Bar Hover Intent

If you use the WordPress Admin Bar you might have noticed the dropdowns are a bit quick on the draw. This plugin enables the jQuery hoverIntent plugin …

Ben Roberts

Sayonara exists because I spent far too long searching for a fully supported, secure and up-to-date popup builder that I could set to trigger when a user exited a site.
Sayonara detects when a user is about to leave, and displays a popup. If you are after something different, Sayonara can also be triggered based on how far down a page a user scrolls, or even after a specified amount of time has passed.
And because some pop-ups can convert up to 40% of your website visitors into subscribers and leads, Sayonara is good for your business.
Let me know what features you want added!
The plugin documentation is being developed – if you have any support questions, please use the support forum instead.
<h3>Features</h3>
<ul>
<li>Display popup based on the intent of a user to exit, the amount they scroll down a page, or after a delay</li>
<li>Display almost anything on the popup, using the same editor you use to create posts and pages</li>
<li>Control the width and height of the popup, amongst other awesome style features</li>
<li>Specify which pages the popup will display on</li>
<li>Control how often your visitors see the popup</li>
<li>Have more than one popup per page</li>
</ul>

Sayonara – Advanced Popup Builder

Finally! A popup builder, fully supported, regularly updated, secure, and free. No monthly subscriptions required with external companies.

Admin Bar Hover Intent vs Sayonara – Advanced Popup Builder