Don Caprio

As the name implies, this social sharing plugin is simple and loads pretty fast. The buttons do not rely on external resources to load, it’s written in PHP, HTML and CSS.
There’s an option to show the buttons on posts and pages. You can also put the buttons anywhere in your template using this template tag:
<pre><code><?php dc_social_share_tag(); ?>
</code></pre>
You can also display using this shortcode in single posts and pages:
<pre><code>[dc-social]
</code></pre>
Please note that these buttons do not show share counts. The essence of the whole thing is to keep it very simplified.
The only button that requires a little snippet of JS to work is the Pinterest button but this does not slow down your site in anyway. A demo of the plugin can be seen here: http://geek.ng/

DC Simple Share Buttons

A set of very simple social sharing buttons that loads pretty fast (no javascript, no images).

Vamsi

Wp Simple Share will display facebook and twitter buttons along with social shared count on singular posts:
<ul>
<li>Posts.</li>
</ul>
After you install, goto wordpress admin panel -> Settings -> Wp Share Simple 
-> Choose the display option
-> Enter Hex color code for share count 
-> Save Settings

WP Share Simple

Simple sharing plugin to display social shared count from facebook and twitter

DC Simple Share Buttons vs WP Share Simple