Tecknolab.

DSmirror is a simple and efficient data replication solution. It enables database tables replication to (inbound) or from (outbound) WP, 
synchronizing with and external DB. This plugin embeds client replication functionality with no additional requirements at WordPress site. 
An external DSmirror agent must be launched with connectivity to your external database; 
however, this agent does not require direct connectivity with your WP database or even your WP site.
Key benefits:
<ol>
<li>Data can be easily loaded and synced in WordPress DB from an external database, enabling multiple use cases in combination with other plugins (custom reporting, forms, dynamic data validation,…) </li>
<li>The opposite is also possible. WordPress data tables can be replicated to an external database, for data protection, monitoring, support or triggering any additional business process.</li>
<li>Your external database can be anywhere. No direct connectivity with your WP environment or DB is required.</li>
<li>Data is efficiently replicated with a sophisticated change tracking algorithm.</li>
<li>Data is securely replicated with encrypted https based connections.</li>
<li>Very simple setup. Just register for an appId and key at <a href="https://dsmirror.tecknolab.com/" title="DSMirror site" rel="nofollow ugc">DSmirror</a>, run the agent as a Docker container as described in <a href="https://dsmirror.tecknolab.com/install" title="DSmirror setup details" rel="nofollow ugc">DSmirror setup</a> connect it to your external DB, setup the plugin and is done.</li>
</ol>

DSmirror

DSmirror (datasource mirror) data replication tool for Wordpress. Sync data to/from WP database with minimal requirements.

Hesham Zebida

This plugin allows you to transfer your inputs Schema markups for reviews and star ratings for Rich Snippets data from one theme/plugin to another. We all know how difficult it can be to switch between platforms. This plugin remedies that.
Just choose what platform your moving away from, platform you want to move to. Click “analyze” to see what records and elements are compatible, and click “convert” to make the conversion.
This plugin was created to mainly assist <a href="https://wprichsnippets.com/" rel="nofollow ugc">WPRichSnippets</a> plugin users to transfer their site data.
Supported Themes
<ul>
<li>None.</li>
</ul>
Supported Plugins
<ul>
<li>Author hReview</li>
<li>WP Reviews</li>
<li>WPRichSnippets</li>
</ul>

WPRS Data Transporter

Simply transfer your inputs Schema markups for reviews and star ratings data from one theme/plugin to another.

DSmirror vs WPRS Data Transporter