interfacelab

NOTE: This plugin requires PHP 7.1x or higher
The ILAB Docs plugin allows you to integrate help documentation for your WordPress theme or plugin directly 
into the WordPress admin.
Documentation is written in Markdown, with special extensions that make writing documentation in markdown easy. These 
extensions allow linking to other markdown files, linking to admin pages, video embeds, displaying a table of contents 
and other features. ILab Docs also has integrated search functionality for easily searching your documentation.
For examples integrating this documentation plugin with your plugin or theme, check out these examples:
<ul>
<li><a href="https://github.com/Interfacelab/ilab-docs-example-plugin" rel="nofollow ugc">Example plugin with documentation</a></li>
<li><a href="https://github.com/Interfacelab/ilab-docs-example-theme" rel="nofollow ugc">Example theme with documentation</a></li>
</ul>

WP Help Docs

Directly integrate markdown based help documentation for your WordPress theme or plugin into the WordPress admin for your end users and clients.

Robert DeVore

DocuPress helps you create your own documentation directly within your WordPress dashboard.
Separate your articles into collections, making it easy for users to browse only the content they’re looking for.
<h3>Includes new Gutenberg block, widgets, and a shortcode</h3>
DocuPress includes a Gutenberg block to display your articles within the new WordPress editor.
Included block options:
<ul>
<li>Article Count</li>
<li>Display style (grid/list)</li>
<li>Display by Collection</li>
<li>Display or hide featured image</li>
<li>Display or hide excerpt</li>
</ul>
See the screenshots for various examples of the block in action
DocuPress also includes the <code>[docupress]</code> shortcode, making it easy to include a list of articles anywhere on your site.
Full list of shortcode options: <code>[docupress limit="99" collections="" order="" viewall="on"]</code>
DocuPress also includes 3 custom widgets:
<ul>
<li>Collections – output’s a list of every collection you create with DocuPress.</li>
<li>Recent Articles – select how many articles to display, randomize the output order and also choose which collection you’d like to display articles from.</li>
<li>Related Articles – select how many articles to display and randomize the output order in this widget that will only display when viewing a single article.</li>
</ul>
<h3>Translations</h3>
Currently, DocuPress comes prepackaged with the following translations:
<ul>
<li>English</li>
<li>Spanish</li>
<li>French</li>
<li>Italian</li>
<li>Hindi</li>
</ul>
Please <a href="https://www.deviodigital.com/contact/" rel="nofollow ugc">let us know</a> if there’s a language you’d like to see DocuPress translated to next.

DocuPress

Simple to use with a nice looking interface that blends in with the standard WordPress dashboard.

It would be nice if, in future, some extra features, specific for documentation, could be added. For example, an automatically generated index based upon content headings.

WP Help Docs vs DocuPress