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.

Sebastian Krysmanski

BlogText (<a href="http://blogtext.mayastudios.com" rel="nofollow ugc">http://blogtext.mayastudios.com</a>) is a plugin for WordPress that allows you to use a simple wiki-like syntax (based on the Creole wiki syntax) to write your posts and pages. This syntax is easy-to-learn and fast-to-type. The goal behind BlogText is that you don’t need to write HTML anymore to achieve the desired text layout.
The following list lists some of the markups supported by BlogText. For a more complete list, see <a href="http://blogtext.mayastudios.com/syntax/" rel="nofollow ugc">BlogText’s syntax description page</a> (which is written entirely in BlogText syntax and demonstrates BlogText’s capabilities).
Supported markup:
<ul>
<li>Basic text formatting such as bold, italics, underlining, and strike-through</li>
<li>Lists</li>
<li>Tables</li>
<li>Internal and external links</li>
<li>Headings</li>
<li>Table of contents</li>
<li>Preformatted text and code blocks with syntax highlighting</li>
</ul>
BlogText also integrates itself into <a href="https://wordpress.org/plugins/classic-editor/" rel="ugc">WordPress’ classic editor</a> (which is the recommended way to write BlogText) by providing its own buttons (to create BlogText syntax), media browser integration, and help links. This make writing posts with BlogText even easier.
For more information, see <a href="http://blogtext.mayastudios.com/features/" rel="nofollow ugc">BlogText’s feature list</a>

BlogText

BlogText is a plugin for WordPress that adds a simple wiki-like syntax to WordPress and enriches it with a good Wordpress editor integration.

WP-MediaWiki vs BlogText