Sam Hotchkiss

This plugin was built by the Maine WordPress Meetup group to make it really easy to add social network icons to your posts.
<h3>This plugin supports the following social networks:</h3>
<ul>
<li>Facebook</li>
<li>Twitter</li>
<li>LinkedIn</li>
<li>StumbleUpon</li>
<li>Delicious</li>
<li>Digg</li>
<li>Reddit</li>
<li>Designfloat</li>
</ul>
You can set this to display at the top or bottom of posts, or display it through a template tag:
<pre><code> socnet_display_links($post_id); 
</code></pre>
Note that the post_id is optional, it will default to the current post.

Simple Socnets

This plugin was built by the Maine WordPress Meetup group to make it really easy to add social network icons to your posts.

tarek.chida

Share-me is a simple social share plugin. 
Share your posts on multiple Social Networks with different icons sets. 
Share-me is able to deal with new icons sets added. 
No ads no sniffing scripts… just a simple and a clean way to share posts! and its Responsive 🙂
You can choose : 
Horizontal position Left/Right 
Vertical position Before/After post 
Icons size 16 px / 20 px / 32 px
Included social Networks : 
Facebook 
Twitter 
Googleplus 
Tumblr 
Linkedin 
Blogger
 New : You can share post using mail
Included Icon Sets : 
Apricum 
Cercle 
Elegent 
Leaf 
Minimalist 
Ribbon 
Simple 
Square 
Shaded

ShareMe

Share-me is a simple social share plugin.

Simple Socnets vs ShareMe