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.

isabel104

Create documentation for any number of products, organized by product, and by sub-headings within each product. You can use this to create instruction guides for just about anything.
This is for you if any of these apply:
<ul>
<li>You need to create software documentation.</li>
<li>You need to create documentation for one or multiple products, and must have the docs organized neatly, by product. </li>
<li>You need to write instruction guides for virtually anything, whether it be products, games, topics, etc. You can label them as “Instructions” instead of “Docs”.</li>
<li>You don’t want to create a separate website for your docs. You simply want to add them on to your current WordPress site.</li>
</ul>
This plugin organizes your documentation articles into a visitor-friendly, browse-able format that fits right into your WordPress site. This takes the headache out of organizing documentation articles and instruction guides.
Built-in SEO
Documentation articles will have schema.org microdata. It adds TechArticle microdata to single Docs, and CollectionPage microdata to Docs archives. You can disable the microdata.
Documentation With a User-Friendly Structure For Your Visitors
The main “Docs Page” will list all the products. Clicking on a product will take you to the docs only for that product.
Each product’s docs are organized into subsections. The subsections list each individual article in that docs section.
A single docs post will have a Table of Contents widget added to the sidebar. This will show a Table of Contents for docs pertaining only to the product which this current single doc belongs to.
Organized Docs works on Multisite WordPress installations, as well as regular WordPress sites.
To Consider
This plugin focuses on 2 priorities: a user-friendly docs structure for your visitors, and fast, optimized pagespeed both on the front and back ends of your site (a very light footprint). So, we omit features that focus on backend ease and bloating. So, there is no drag-and-drop ordering of docs. This plugin uses categories to classify your docs rather than creating a whole new interface for docs.
<a href="https://isabelcastillo.com/docs/creating-docs" rel="nofollow ugc">Quick Start Guide</a>
For support, use the support forum link above.

Organized Docs

Create organized documentation for multiple products, organized by product and by subsections within each product.

WP Help Docs vs Organized Docs