Cresencio

This plugin will allow you to create a bootstrap accordion with default styles to any post, page or section with a default WordPress editor. After installing this plugin you will have a tiny button added to your editor that will help you generate the necessary shortcode.
Features:
<ol>
<li>Fully responsive</li>
<li>Easy to use. </li>
<li>Add any type of content to an accordion section.</li>
</ol>
<h3>Demo</h3>
For a demo of this plugin please the video at http://www.youtube.com/watch?v=HaqU1h1Okms

WordPress Accordion

Add a responsive accordion to your WordPress website with this easy to use accordion plugin.

Gregor Capuder

ProteusThemes

Primoz Cigler

Page Builder by SiteOrigin editor is great, but it lacks a “tabs widget”, so we created one.
The “Tabs for Page Builder” widget allows you to add multiple tabs with a tab name and tab content. The tab content is using the Page Builder editor, so you can build your own layout inside the tab content (add widgets, set columns, …).
The front-end display is the same as the tabs in Bootstrap framework.
<a href="http://gregorcapuder.com/tabs-widget-for-page-builder/" rel="nofollow ugc">More details about this plugin can be found in this post</a>.
Note: the front-end design is “bare bones”, so only the default Bootstrap CSS is used. So you should style it to your own liking with custom CSS. Maybe we will add some custom skins in the future, but I can’t make any promises.

Tabs Widget for Page Builder

Adds a "Tabs for Page Builder" widget, which can be used in Page Builder by SiteOrigin editor.

WordPress Accordion vs Tabs Widget for Page Builder