Nazmul Islam

This plugin will add an expand collapse accordion feature inside a post or page.
Plugin Features
<ul>
<li>Shortcode System</li>
<li>TinyMCE Button added for generating Shortcode.</li>
<li>Very Lightweight. Only 12KB.</li>
<li>Easy documentation & many More.</li>
</ul>
Live Preview: <a href="http://nazmulislam.xyz/plugins/lz-accordion" rel="nofollow ugc">Accordion Live Demo</a>

LZ Accordion

This plugin will add an expand collapse accordion feature inside a post or page.

Sohelwpexpert

<h3>WP Accordion by http://sohel.prowpexpert.com/</h3>
This plugin will add an expand collapse accordion feature inside a post or page.
Plugin Features
<ul>
<li>Shortcode System</li>
<li>TinyMCE Button added for generating Shortcode.</li>
<li>Easy documentation 
& many More.</li>
</ul>
Live Preview: http://sohel.prowpexpert.com/accordions/

LZ Accordion vs WP Accordion