dansnet

Dansnet Meta Tag is a lightweight plugin that allows you to generate HTML metadata to provide information for search engines like Google.
The tag provides metadata about the HTML document. Metadata will not be displayed on the page, but will be machine parsable. 
Meta elements are typically used to specify page description, keywords, author of the document, last modified, and other metadata. 
The metadata can be used by browsers (how to display content or reload page), search engines (keywords), or other web services. 
For backwards compatibility, if this section is missing, the full length of the short description will be used, and 
Markdown parsed.
This plugin supports following tags:
<ul>
<li>“description” defines keywords for search engines</li>
<li>“keywords” define a description of your web page</li>
<li>“author” defines the author of a page</li>
<li>“robots” defines if your web page should be indexed or not</li>
</ul>
Meta tag settings can be found on the general settings page from your Worpress installation.

Dansnet Meta Tag

Dansnet Meta Tag is a lightweight plugin that allows you to generate HTML metadata to…

Philipp Speck

This plugin will make it possible to use tags as <code>meta keywords</code>. Under <code>Pages</code> you will find a new meta box called <code>Keywords</code>. 
By activation the plugin registrates a separate taxonomy which is independent from post tags. 
Today’s search engines don’t use <code>meta keywords</code> as a criteria at all, but who knows for what they will be good in future 😉 
For me tagging is necessary to bring pages in relation and gives me the possibility to save my tags redundant in the database.
Features
<ul>
<li>Use post tags as <code>meta keywords</code></li>
<li>Registrates own <code>taxnomy</code> for pages</li>
<li>No coding needed</li>
<li>Language support</li>
</ul>
Related Links
<ul>
<li><a href="http://www.typomedia.org/wordpress/plugins/wordpress-meta-keywords/" title="Homepage of WordPress Meta Keywords" rel="nofollow ugc">Homepage</a></li>
<li><a href="https://wordpress.org/extend/plugins/wordpress-meta-keywords/changelog/" title="Changelog for WordPress Meta Keywords" rel="ugc">Changelog</a></li>
<li><a href="https://wordpress.org/extend/plugins/wordpress-meta-keywords/faq/" title="FAQ for WordPress Meta Keywords" rel="ugc">Questions</a></li>
</ul>
Localization
<ul>
<li>German translation by <a href="http://www.destio.de/" title="Designstudio, Philipp Speck" rel="nofollow ugc">Designstudio, Philipp Speck</a></li>
<li>Slovak translation by Branco Radenovich</li>
</ul>
Note: 
Before installing or upgrading new plugins, please backup your database first!

WordPress Meta Keywords

This plugin gives you the ability to set Meta Keywords in WordPress. Under pages it will registrate a separate taxonomy for keywords.

Dansnet Meta Tag vs WordPress Meta Keywords