3sheep

The plugin allows you maintain a number of separate signatures that can be added into posts and pages using short codes.
You can use ‘Number of Signatures’ option to set the number of available signatures. You can then enter each signature using text and variables to add author information. The available variables include:
<ul>
<li>%LOGIN% – Login name</li>
<li>%FIRST% – First name</li>
<li>%LAST% – Last name</li>
<li>%NICK% – Nickname</li>
<li>%EMAIL% – Email address</li>
<li>%URL% – Website</li>
<li>%DESC% – Description/Bio</li>
</ul>
To include a signature into a page or post use the shortcode shown next to the signaure (e.g. [tssig id=”2″]).

3 Sheep Signatures

Allows adding a custom signatures to posts and pages using shortcodes.

M A Vinoth Kumar

buffercode

Comment Signature provides easy way to add user’s signature who already registered on that site.
Through this plugin user can,
<ul>
<li>Registered user can able to add their own signature on their profile.</li>
<li>Each comment will be added with signature at the bottom of comment.</li>
<li>If user not registered, no signature will be added.</li>
<li>All signatures have been <code>.</code></li>
<li>User can able to set the URL size in setting page.</li>
<li>User can able to select the font color in setting page.</li>
<li>User can add horizontal line separation width [ver 2.1]</li>
<li>User can add the margin for horizontal line to override the theme CSS [ver 2.1]</li>
<li>Admin can able to change the size of the Font [ver – 2.1]</li>
<li>Admin can able to restrict the number of characters for Signature [New – 2.2]</li>
</ul>
For more information : http://buffercode.com/project/comment-signature/
v 2.2
<ul>
<li>Admin can able to restrict the number of characters for Signature</li>
</ul>
v 2.1
<ul>
<li>User can add horizontal line separation width</li>
<li>User can add the margin for horizontal line to override the theme CSS</li>
</ul>
v 2.0
<ul>
<li>Bug fixes and support 4.2.3</li>
</ul>
v 1.3.2
<ul>
<li>Supports 3.9.1</li>
</ul>
v 1.3.1
<ul>
<li>Bug fixes.</li>
</ul>
v 1.3
<ul>
<li>Now user can able to select the font color in setting page.</li>
</ul>
v 1.2
<ul>
<li>Now user can able to set the URL size in setting page.</li>
</ul>
v 1.1
<ul>
<li>Bug fixes</li>
</ul>
v 1.0
<ul>
<li>Public release</li>
</ul>

Comment Signature

Comment Signature provides easy way to add user's signature who already registered on that site.

3 Sheep Signatures vs Comment Signature