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

Mohsin Rasool

This plugin adds [collapse_group] and [collapse] shortcode to generate twitter bootstrap’s collapse aka accordian.
Usage:
<pre><code>[collapse_group id="optional_group_1" class="optional_class"]
 [collapse title="my heading1" id="optional_id" open="y/n"]some text[/collapse]
 [collapse title="my heading2" id="optional_id" open="y/n"]some text[/collapse]
[/collapse_group]
</code></pre>
See output of this code in Screenshots

Twitter Bootstrap Collapse aka Accordian Shortcode

This plugin adds [collapse_group] and [collapse] shortcode to generate twitter bootstrap's collapse aka accordian.

Bellows Accordion Menu vs Twitter Bootstrap Collapse aka Accordian Shortcode