Wagner

<ul>
<li>Block certain kinds of users from registering to your WordPress site by adding blacklist rules. </li>
<li>Super simple to use. The whole plugin just has one simple settings page.</li>
<li>Support regular expression rules.</li>
<li>Completely free.</li>
<li>Support tracking and recording login attempts since v1.1.0.</li>
<li>Login attempts chart since v1.1.0.</li>
</ul>


Geek Mail Blacklist

Block users with certain emails from registering to your WordPress site by adding blacklist rules.

tmatsuur

<p>This plugin increases the efficiency of spam distinction of a comment. It is possible to extract URL from the past spam comment and add to a blacklist. Moreover, URL contained in a new spam comment can be added to a blacklist.</p>
<h4>Some features:</h4>
<ul>
<li>The key of a blacklist and a moderation list is automatically rearranged in order of a name. </li>
<li>Each key is movable by drag and drop. </li>
<li>URL contained in the accumulated spam comment can be added to a blacklist.</li>
<li>URL contained in a new spam comment can be added to a blacklist when marked spam. </li>
<li>The comment in which a few URL is contained can be marked as spam. </li>
<li>The extended blacklist corresponding to a regular expression can be used.</li>
</ul>
<h4>Support</h4>
<ul>
<li>Japanese – http://elearn.jp/wpman/column/blacklist-keys-manager.html</li>
</ul>
<h4>Translators</h4>
<ul>
<li>Japanese(ja) – <a href="http://12net.jp/" rel="nofollow ugc">Takenori Matsuura</a></li>
</ul>
<p>You can send your own language pack to me.</p>
<p>Please contact to me.</p>
<ul>
<li>http://12net.jp/ (ja)</li>
<li>@tmatsuur on twitter.</li>
</ul>
<h4>Contributors</h4>
<ul>
<li><a href="http://12net.jp/" rel="nofollow ugc">Takenori Matsuura</a></li>
</ul>
<h3>Credits</h3>
<p>This plug-in is not guaranteed though the user of WordPress can freely use this plug-in free of charge regardless of the purpose.<br />
The author must acknowledge the thing that the operation guarantee and the support in this plug-in use are not done at all beforehand.</p>
<h3>Contact</h3>
<p>email to takenori.matsuura[at]gmail.com<br />
twitter @tmatsuur</p>


Blacklist keys manager

The increase in efficiency of management of a comment blacklist is attained, and a spam comment is blocked.

Geek Mail Blacklist vs Blacklist keys manager