antocara

Add a box with information about the author of each post after post written by that author. 
This box will display information in bio of each writer’s blog, a link to every post written by this author, avatar, and a series of icons link to author profile on social networks 
are known as Facebooks, Twitter, Google+ and icon for contact by email.
All these data the author of this post are collected from the profile of each author which have incorporated the necessary fields to fill. 
Author Info also has a widget in which appear a list of all components of the blog who have permission to write to the blog. This widget also displays the avatar of the author, 
his name with a link to a list of all posts written by him, the same icons to link to your profile on social networks and the number of written post. 
The box appears with the author’s information after each post is configurableboth in its background color, the color of the lettering and decorative border color of the table below.
Author info is configured for use in multi mode to be available in:
<ul>
<li>Spanish </li>
<li>English</li>
<li>Italian (gracias @cento)</li>
</ul>

CW Author Info

Add a box with information about the author of each post after post, include a widget in which appear a list of all components of the blog

Morten Rand-Hendriksen

The Cool Author Box plugin adds information about the author to the bottom of the content of posts and/or pages. The information is gathered from the profile info set inside WordPress.
Items displayed are:
<ul>
<li>Display name of the author of the post or page</li>
<li>Gravatar of the author (set at www.gravatar.com)</li>
<li>Link to other posts by the same author</li>
<li>Link to author’s website</li>
</ul>
To make the author box appear you need to activa the plugin and go to the Cool Author Box settings under Settings and select if the box should appear under posts, pages or both.
<h3>Credits</h3>
Copyright 2010 by Morten Rand-Hendriksen and Pink & Yellow Media
This program is free software; you can redistribute it and/or modify 
it under the terms of the GNU General Public License as published by 
the Free Software Foundation; either version 2 of the License, or 
(at your option) any later version.
This program is distributed in the hope that it will be useful, 
but WITHOUT ANY WARRANTY; without even the implied warranty of 
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Cool Author Box

Adds a stylish author box with author name, bio, Gravatar and links after the content in posts and/or pages.

CW Author Info vs Cool Author Box