The best wordpress "Read more" plugin to help you show or hide your long content.
This plugin creates a shortcode to add an expandable box to show and hide the selected content on a post or page with customisable show and hide links
Date: 06/02/2016 Enhanced Folding Category List for WordPress 2.8+
Display FAQs in an expandable concertina or accordion section. FAQs can be ordered and categorised, and their appearance can be customised.
This plugin adds a new widget where you can view your old posts by expanding certain years and months.
Expanding Widgets is a quick way to add multiple widgets