swergroup

This plugin let plugin and theme authors to display their work in their main WordPress. It provides some helpers:
<ul>
<li>two custom post types: plugins and themes</li>
<li>SEO-friendly URLs</li>
<li>fetch (and cache in transient) plugin/theme info from the latest readme.txt file</li>
<li>fetch (and cache in transient) rating / support / downloads info</li>
<li>plugin info from readme file as custom post metadata</li>
</ul>
Planned in the next release:
<ul>
<li>widgets with plugin info</li>
<li>shortcodes</li>
</ul>

Developer Showcase

Plugin/theme showcase plugin for WordPress plugin/theme authors and developers.

Tom Baumgarten

SPS is a simple plugin to create a slider of pictures and display it with a shortcode or PHP code. Few options to keep it simple, but fast and efficient. Some hooks to improve the slider or to configure it more specifically. Good plugin for developers, with possibility to control what your client can edit or not in the advanced options. 
Compatible with ACF, you can put field groups for every slide. It’s possible to override template files for displaying the fields.

Simple Pictures Slider

A simple plugin to display a picture slider. Light, efficient and compatible with ACF. Best for developers.

Developer Showcase vs Simple Pictures Slider