Franky

A simple plugin to sync Facebook events to the Events Made Easy plugin, based on the old Sync Facebook Events plugin. 
Uses the Facebook PHP API, which requires at least PHP 5.4 to work. 
Note: This plugin is NOT owned or maintained by Facebook in any way.
Get The Events Made Easy plugin: 
https://wordpress.org/extend/plugins/events-made-easy/

EME Sync Events

A simple plugin to sync Facebook events to the Events Made Easy plugin (not owned or maintained by Facebook in any way).

evokelektrique

Replicant
A plugin that replicates and synchronize content in your WordPress websites.
<h3>Features</h3>
<ul>
<li>Sync WordPress posts, including (Create, Update, Delete) across all trusted nodes</li>
<li>Sync WordPress pages, including (Create, Update, Delete) across all trusted nodes</li>
<li>(SOON) Sync WordPress comments</li>
<li>(SOON) Sync WordPress users</li>
<li>(SOON) Sync WooCommerce products</li>
</ul>
<blockquote>
Note that currently the depth limit of nodes could be only 1 and maybe in futrue updates we will increase the limit.
</blockquote>
<h3>Example use case</h3>
<ul>
<li>
For example if you need to create chained websites, The problem arise when you need to copy countless content in multiple websites, Replicant makes this job simple and easy for you.
</li>
<li>
You want to have a backup of your posts or pages with their metadata included, Replicant is a good choice for you.
</li>
</ul>

Replicant

A plugin that replicates and synchronize content in your WordPress websites.

EME Sync Events vs Replicant