Create a fully featured Help Center site (Knowledge Base, Documentation, Wiki, FAQs) with WordPress.

WPHelpKit

Create, Organize and Publish help content.
A simple tool for creating Knowledge Base and Documentation sites 
for your software products.
HelpKit for documentation sites 
is what WooCommerce is for eCommerce sites.
<h3>What can I do with HelpKit?</h3>
<ul>
<li>Help Center / Support Sites</li>
<li>Knowledge Base</li>
<li>Documentation</li>
<li>User Manuals</li>
<li>Wiki</li>
<li>FAQs</li>
</ul>

Alternative Plugins for

Discover the Lists with WPHelpKit

Core-Worthy

Customer Relationship Management

Learning Management System