alaingg

This is a menu that uses the images attached to the posts/pages galleries as items background. You can insert the menu wherever you want: into the content, in your theme files and as a widgets. Visit the <a href="http://web-argument.com/category/accordion-image-menu-2/" rel="nofollow ugc">plugin page</a> for demos and details.
Special Features:
<ul>
<li>Allows to combine pages and categories and apply order to them</li>
<li>Its integrated with the wordpress > 3.0 menus interface</li>
<li>The plugin uses the post feature image or the medium size image attached to post and pages</li>
<li>The menu uses the top image from the posts/pages gallery</li>
<li>You can use it to list recent posts</li>
<li>Multiple transition effects included (Elastic, Bounce, Sine, Pow, Quart, Back, Circ)</li>
<li>You can include ‘the title’ of the target pages</li>
<li>Allows to include multiple menus on your blog </li>
<li>The menu can be based on posts/pages ids</li>
<li>Compatible with: Chrome, Safari, Firefox and IE 7, 8, 9</li>
</ul>

Accordion Image Menu

Accordion Image Menu that allows to use the images attached to the posts and pages galleries as background.

sevenspark

Bellows is an awesome accordion menu for WordPress. It works with the WordPress menu system to allow you to build beautiful accordion menus for your site.
<a href="https://wpaccordionmenu.com/free/" rel="nofollow ugc">Bellows Lite Demo</a> 
<a href="https://wpaccordionmenu.com/" rel="nofollow ugc">Bellows Full Demo</a>
Get started: <a href="http://sevenspark.com/docs/bellows/quick-start/lite" rel="nofollow ugc">Bellows Quick Start Guide</a>
<h4>Feature Overview</h4>
<ul>
<li>Fully functional accordion menu</li>
<li>Multiple submenu levels</li>
<li>3 included skin presets</li>
<li>Multi- or single-folding</li>
<li>Expand current submenu automatically option</li>
<li>Shortcode integration – add an accodion menu to yoru site anywhere you can add shortcodes</li>
<li>Widget integration – add an accordion menu to your widgetized theme areas</li>
</ul>

Bellows Accordion Menu

A flexible and robust accordion menu plugin

Accordion Image Menu vs Bellows Accordion Menu