gmsspress

gmss-agent adds a customizable floating chat widget to every page of your WordPress site. Visitor questions are answered by matching them against a JSON knowledge-base file you provide. Everything runs locally on your server — no API key, no third-party service, no visitor data sent anywhere.
The plugin is designed for support, FAQ, and lightweight pre-sales conversations where you want answers limited to information you have written and approved.
Features
<ul>
<li>Floating chat widget with configurable title, welcome message, primary color, and corner position (bottom-right or bottom-left).</li>
<li>Local matcher with weighted token-overlap scoring: title hits and explicit keyword hits are ranked above body hits, with a phrase bonus when the visitor’s full query appears in an entry.</li>
<li>Optional <code>keywords</code> array on each entry to handle synonyms the body text does not contain.</li>
<li>Configurable fallback reply when no entry matches the visitor question.</li>
<li>JSON knowledge base loaded from a single <code>knowledgebase.json</code> file at the root of your WordPress install.</li>
<li>Ships with a sample knowledge base so the widget answers something out of the box.</li>
<li>REST endpoint protected by a WordPress nonce.</li>
<li>Translation-ready (text domain: <code>gmss-agent</code>).</li>
</ul>
Requirements
<ul>
<li>WordPress 5.8 or newer and PHP 7.4 or newer.</li>
</ul>
<h3>Privacy</h3>
The plugin does not set cookies, does not write to any custom database tables, does not contact any external service, and does not log visitor messages on your server. Settings are stored in the standard WordPress <code>wp_options</code> table and are removed when the plugin is uninstalled via the Plugins screen. The knowledge base file you create is read from disk on each request and is never transmitted off your server.

gmss-agent

Floating chat widget that answers visitor questions from a JSON knowledge base on your own server. No external API, no data leaves your site.

Kyle M Brown

Turn your WordPress website into a knowledge base.
<h3>WP Knowledge Base Features</h3>
<ul>
<li>Create a knowledge base in WordPress with ease.</li>
<li>Use the standard WordPress interface for creating your knowledge base article. </li>
<li>Use the steps interface for creating step by step details for your knowledge base guide.</li>
<li>Great for Knowledge base, Manuals, procedures, guidelines, How-to’s, math instructions, recipes, and more.</li>
</ul>
<a href="https://www.wpdocs.co?utm_source=wordpress_org_descpage&utm_medium=link&utm_campaign=wpkb" rel="nofollow ugc">###Pro – Features###</a>
<ul>
<li>Enlarge images with modal windows.</li>
<li>Use the native WordPress image feature to upload and store images.</li>
<li>Change the front end layout of the steps to vertical similar to wikihow.com</li>
<li>Add rich meta (links, bold, etc) to the body area.</li>
<li>Publish directly to stand alone guide pages without using shortcodes.</li>
</ul>
<a href="https://www.wpdocs.co?utm_source=wordpress_org_descpage&utm_medium=link&utm_campaign=wpkb" rel="nofollow ugc">Get the Pro version.</a>

WP Knowledge Base

My own rating

Turn your WordPress site into a knowledge base.

gmss-agent vs WP Knowledge Base