WP-MediaWiki adds a subset of MediaWiki markups to WordPress. 
Currently, the following MediaWiki markups are supported.
<ul>
<li>Bold</li>
<li>Italic</li>
<li>Heading</li>
<li>Lists: Besides the list markups come from MediaWiki, I also added a continuation markup such that users can put preformatted text in a list item.</li>
<li>Tables</li>
<li>External links</li>
<li>WikiLinks: the wikilink will link to Wikipedia by default, you can change the wiki site in the admin option page.</li>
<li>Table of content</li>
<li>Horizontal line</li>
<li>Preformatted text</li>
</ul>
For more information about MediaWiki markups, please refer to http://meta.wikimedia.org/wiki/Help:Editing. 
For a demo of this plugin, please refer to http://zechs.dyndns.org/wordpress/?page_id=152. 
There is also a sandbox (http://zechs.dyndns.org/wordpress/wp-content/files/wp-mediawiki/sandbox/index.php) for you to preview the effect of this plugin.

WP-MediaWiki

WP-MediaWiki is a plugin for WordPress. It adds a subset of MediaWiki markups to WordPress.

Jason T. Wiser

Grigor Asatryan

wisersites

Simple Schema puts the power of Schema markup into your hands, right from within your WordPress editor. You can choose from the most common Schema types and properties for your web pages.
You can customize each WordPress page, post, or post type with its own custom Schema types and properties to maximize your SEO for every different page.
The Schema types included in the free version of the plugin are:
<ul>
<li>Article</li>
<li>Person</li>
<li>Movie</li>
<li>Book</li>
<li>Blog</li>
<li>Web Page</li>
<li>Web Site</li>
</ul>
<blockquote>
Need more? 
 If you need access to more Schema types, our <a href="//simpleschema.com”" rel="“friend” nofollow ugc">Pro Version</a> gives you access to the entire Schema.org heirarchy core plus all extension vocabularies of types and properties.
</blockquote>
You can choose to have the Schema output visible on the page (above or below content) or have it hidden (only visible in the page HTML).
<h3>Notes</h3>
<h4>Testimonial</h4>

Simple Schema

The simplest way to generate and insert semantic SEO-friendly Schema markup into your WordPress site.

WP-MediaWiki vs Simple Schema