Rhys Wynne

This plugin adds to Profile Pages an extended “Author Bio”. This allows users to add more information to what they’d feel comfortable adding underneath the post. This Author Bio can be displayed on the author page, as opposed to the standard “Author Description”.
This plugin is a framework, so requires a bit of PHP skill and experience in template editing to make it work.
<ul>
<li>For more features including Google Rich Snippet Integration, check out <a href="http://bloggingdojo.com/wordpress-plugins/author-plus-premium-wordpress-plugin/" rel="nofollow ugc">Author+ Premium WordPress Plugin</a></li>
<li>Blogging Tutorials and WordPress Plugins at <a href="http://bloggingdojo.com/" rel="nofollow ugc">The Blogging Dojo</a></li>
</ul>
<h3>Usage Instructions</h3>
The best place to use this plugin is on the author.php page. I have included a framework for using this plugin.
To begin with, on <code>author.php</code>, add this line. This will get the information on the author.
<pre><code>$author = wp_authorplus_get_user_on_author_page();
</code></pre>
You can then use the standard <code>echo $author->display_name;</code> and similar notation as shown in (The WordPress Codex)[https://codex.wordpress.org/Author_Templates#Using_Author_Information].
To call the extended author descriptions, use <code><?php wp_authorplus_extended_author_bio($author->ID); ?></code> anywhere outside the WordPress Loop, but after you declare $author on wp_authorplus_get_user_on_author_page().
Any questions, please <a href="http://bloggingdojo.com/contact-us/" rel="nofollow ugc">Contact Me</a>

Plugin Name:  Author+ (Lite)

This plugin adds to Profile Pages an extended "Author Bio". This allows users to add more information to what they'd feel comfortable a …

Razesdark

This plugin will allow all authors to have their own tweets shown on in the widget area of their posts, by adding it to their profiles. 
That way any multi-author blog can let their bloggers promote their own twitter account and not a joint account.

Author Based Twitter Widget

A Author based twitter widget, made to help multi author blogs have individual twitter widgets for their authors.

Plugin Name: Author+ (Lite) vs Author Based Twitter Widget