WPManiax

Add sticky social share bar to your web footer.
Foosocial is super easy to install and configure.
It supports most popular social networks and is fully responsive.
Take a look at the <a href="http://www.wpmaniax.com/foosocial/" rel="nofollow ugc">Video Preview</a>
Main Features:
<ul>
<li>easy to install and configure</li>
<li>most popular social networks supported (Facebook, Twitter, Google Plus, LinkedIn, Reddit, Tumblr, StumbleUpon )</li>
<li>fully responsive</li>
<li>slide-in animation support</li>
<li>show Foosocial after user scroll down the page</li>
<li>configure where to show (posts, pages, home, archives)</li>
<li>nice and elegant design</li>
</ul>
<h3>Feedback</h3>
http://www.wpmaniax.com/foosocial/

Foosocial

Add sticky social share bar to your web footer.

Scott Grayban

It puts a bar of icons at the bottom of each post allowing your readers to submit your posts to several different 
social networking and bookmarking sites. (del.icio.us, digg, fark, etc.)
The original plugin was called <a href="http://blog.calevans.com/2006/02/08/notable-another-wordpress-plugin/" rel="nofollow ugc">wp-notable</a> 
but no longer worked or was supported. The author was Cal Evans.

notable

Adds social bookmark links to each blog entry.

Foosocial vs notable