Philipp Stracker

Leverage the power of the free Webslides framework to create your own presentations directly in WordPress block editor (Gutenberg).
Works with every theme
Your presentations are saved in a custom post type and displayed with a special HTML template, that loads the Webslides CSS and JS library. No matter what theme you use, the presentations will always look and feel the same everywhere.
Slide elements
We work to frequently add new modules to give you more power when creating new presentations. At the moment a presentation can include the following elements:
<ul>
<li>Slides</li>
<li>1-5 Columns</li>
<li>Headlines</li>
<li>Paragraphs</li>
</ul>
Notes
This plugin requires WordPress 5.0.0 with block-editor enabled. It might not work when the \”Classic Editor\” plugin is enabled.
This plugin is open source. However, the code in the WordPress plugin repository is minified for use on production websites. In case you want to review the source code or even contribute to the plugin, you can fork/download the code here: 
https://github.com/stracker-phil/wp-webslides-presentations

Webslides Presentations

Create professional presentations direct inside WordPress. Not a subscription or external service!

tonnaer

A free, small (only 13Kb) flash slide show widget, that can easily be integrated 
into your WordPress 3.4 website, and can be entirely (or almost) personalized 
through a bunch of parameters.
New features: 
* A title can be set 
* Slides can be loaded through a proxy, enabling cross domain image loading 
* The transparancy of the slide show’s background can be set 
* A watermark image, its transparancy, position and full-window display can be set 
* A new border type: image 
* The possibility to set a different target window for each slide 
* The possibility to load all images (jpeg, gif and png) in a folder 
* The possibility to use dynamic xml creation, which should resolve any write permission problems 
* The possibility to choose if images must be resized to fit the slideshow window
Other features: 
* also works if you’ve given <a href="https://codex.wordpress.org/Giving_WordPress_Its_Own_Directory" title="Giving WordPress its own directory" rel="nofollow ugc">WordPress its own directory</a> 
* works with redirects 
* works with permalinks 
* height and width can be set 
* 28 transition types 
* links can be enabled (one for the whole slide show, or one for each slide) 
* slides can be shown in forward, backward or random order 
* border style, color, width and transparancy can be specified 
* caption can be text or image 
* caption can be the same for the whole slide show, or a different one for each slide 
* caption characteristics (position, style, font, fontsize, color, transparancy, etc) 
 can be specified 
* you can have more than one slide show on your pages. 
* etc.

Creative Clans Slide Show

A free widget to use the Creative Clans Slide Show in your Wordpress website.

Webslides Presentations vs Creative Clans Slide Show