poxrud

This plugin generates Structured Data Schema in JSON-LD format. This could potentially improve your site’s visibility and SEO.
To learn more about Structured Data and Schema please visit Google’s <a href="https://developers.google.com/search/docs/guides/intro-structured-data" rel="nofollow ugc">Introduction to Structured Data</a>.
Make sure to test your website’s structured data using the <a href="https://search.google.com/structured-data/testing-tool" rel="nofollow ugc">Structured Data Testing tool</a>.
While there are hundreds of differet Schema types this plugin’s focus is on those types that releate to Product based businesses.
Currently as of version 1.0.0 the plugin supports the following Schema types:
<ul>
<li><a href="http://schema.org/WebSite" rel="nofollow ugc">WebSite</a></li>
<li><a href="https://developers.google.com/search/docs/data-types/corporate-contacts" rel="nofollow ugc">Organization</a></li>
<li><a href="https://developers.google.com/search/docs/data-types/products" rel="nofollow ugc">Products</a></li>
<li>New types will be added in future versions.</li>
</ul>
NOTICE: This plugin is offered free of charge. It has been written by <a href="https://www.twitter.com/poxrud" rel="nofollow ugc">Phil Oxrud</a>.
<h4>Features</h4>
<ul>
<li>Specifically Tailored for Google’s structured data schema</li>
<li>WebSite Schema</li>
<li>Organization Schema</li>
<li>Indicate multiple contact phone numbers using schema</li>
<li>Indicate multiple social media accounts using schema (twitter, facebook, and youtube)</li>
<li>Supports Products Schema</li>
<li>Generate defaults or customize the schema of every individual product.</li>
</ul>

Business Schema JSON-LD

Generate Structured Data in JSON-LD format for Product based businesses. Supports popular schema.org types that would be commonly used by a typical bu …

Aaron Queen

There are many sites that are crawling for user-generated reviews now, including Google Places and Google Local Search. WP Customer Reviews allows you to setup a specific page on your blog to receive customer testimonials for your business/service OR to write reviews about a product.
<ul>
<li>WP Multisite and Multiuser (WPMU / WPMS / WordPress MU) compatible.</li>
<li>All submissions are moderated, which means that YOU choose which reviews get shown.</li>
<li>Reviews are displayed to visitors in a friendly format, but search engines see the Schema.org microformat.</li>
<li>Multiple anti-spam measures to prevent automated spambots from submitting reviews.</li>
<li>Completely customizable, including which fields to ask for, require, and show.</li>
<li>Shortcodes available for inserting reviews and review form on any page or widget.</li>
<li>Works with caching plugins and custom themes.</li>
<li>Includes an external stylesheet so you can modify it to better fit your theme.</li>
<li>Reviews can be edited by admin for content and date.</li>
<li>Admin responses can be made and shown under each review.</li>
<li>Support for adding your own custom fields.</li>
<li>The plugin can be used on more than one page, and can be used on posts.</li>
<li>Supports both <code>Business</code> and <code>Product</code> review types.</li>
<li>Shows aggregate reviews microformat.</li>
<li>Fast and lightweight, even including the star rating image. This plugin will not slow down your blog.</li>
<li>Validates as valid XHTML 1.1 (W3C) and valid Microformats (Rich Snippets Testing Tool).</li>
<li>And much more…</li>
</ul>
Almost every new feature that has been added was due to the generous support and suggestions of our users. If you have a suggestion or question, do not hesitate to ask in our forum.
More information at: <a href="https://wordpress.org/plugins/wp-customer-reviews/" rel="ugc">WP Customer Reviews</a>

WP Customer Reviews

Allows your visitors to leave business / product reviews. Testimonials are in Microdata / Microformat and may display star ratings in search results.

Business Schema JSON-LD vs WP Customer Reviews