iThemes

Chris Wiegman

<p>Add sharing buttons for Buffer, Facebook, Google +1, LinkedIn, Pinterest, and Twitter</p>
<h4>The Fastest Social Sharing Plugin for WordPress</h4>
<h4>Features</h4>
<ul>
<li>Loads javascripts asynchronously so it won’y slow down your site</li>
<li><a href="http://www.bufferapp.com" rel="nofollow ugc">Buffer Button</a></li>
<li><a href="http://www.facebook.com" rel="nofollow ugc">Facebook Like Button</a></li>
<li><a href="http://plus.google.com" rel="nofollow ugc">Google +1 Button</a></li>
<li><a href="http://www.linkedin.com" rel="nofollow ugc">LinkedIn Button</a></li>
<li><a href="http://www.pinterest.com" rel="nofollow ugc">Pinterest Button</a></li>
<li><a href="http://www.stumbleupon.com" rel="nofollow ugc">StumbleUpon Button</a></li>
<li><a href="http://www.twitter.com" rel="nofollow ugc">Twitter Button</a></li>
<li>Works with the <a href="" rel="nofollow ugc">Bit.ly Shortlinks</a> plugin to provide <a href="" rel="nofollow ugc">Bit.ly</a> shortlinks including custom domains</li>
<li>Can be appended to content or used as a widget</li>
</ul>
<h4>Translations</h4>
<ul>
<li>Slovak by Branco of <a href="http://webhostinggeeks.com/blog/" rel="nofollow ugc">WebHostingGeeks.com</a></li>
<li>Spanish by <a href="http://pabloromero.org" rel="nofollow ugc">Pablo Romero</a></li>
</ul>
<h3>License</h3>
<p>Released under the terms of the GNU General Public License.</p>


Share Center Pro

Adds asynchronous (won't slow your site down) sharing buttons for Google plus, Facebook, Twitter, LinkedIn, Buffer, and Reddit.

Mervin Praison

<p>This plugin helps you add Google authorship markup to your WordPress site, allowing your Google Plus profile picture to appear in Google Search results.</p>
<p>Features:<br />
* Easy 4-step setup process<br />
* Multiple author support<br />
* Multisite compatible<br />
* Shortcode support</p>


WP Google Authorship

Nice

Google Plus Profile Picture appear in Google Search. Very Easy to implement. Including Google authorship for multiple authors and multisite.

Share Center Pro vs WP Google Authorship