Simple Sliders is a content plugin for Joomla that creates accordion sliders in an article.

You create sliders by including plugin calls like this in your articles:

{s​lider title="Slider 1 Title" class="blue"}
Slider 1 content.
{s​lider title="Slider 2 Title" class="red"}
Slider 2 content.
{/s​liders}

We use Simple Sliders on our Contact page, FAQ pages, and elsewhere. We previously used the "Sliders" plugin from Regular Labs but eventually decided to write our own. The calling syntax, visual styling and functionality are broadly compatible with Regular Labs, but Simple Sliders is very "light" by comparison.

Simple Sliders	Regular Labs
Installs a single plugin	Installs multiple extensions
Installs 5 small files	Installs hundreds of files
Supports URL links with slider parameter	Supports URL links with slider parameter or #tag
Does not support nested sliders	Supports nested sliders
No plugin configuration parameters	Many plugin configuration parameters
No Pro version	Pro version has many advanced features
No editor button	Installs an editor button

The choice is yours. Both products are free!