metaphorcreations

Custom pack of widgets including shortcode generators.
<ul>
<li>Twitter</li>
<li>Social</li>
<li>Recent Comments</li>
<li>Recent Posts</li>
<li>Tabbed Posts</li>
<li>Contact</li>
<li>Post Navigation</li>
<li>Collapse</li>
</ul>
<h3>Advanced Info</h3>
Each widget includes a shortcode generator. Copy and paste the shortcodes into your posts to display the widget contents anywhere on your site.
Each widget also displays the widget ID of the widget. This can be helpful if you wish to use any of the filters built into the widgets.

Metaphor Widgets

Custom pack of widgets including shortcode generators.

utahta

This plugin inserts social share links at the top or bottom of each post. 
For theme developers, social share links can be added by PHP code or by using shortcode. Check documentation for this use-case.
This plugin documentation can be found <a href="https://github.com/utahta/WP-Social-Bookmarking-Light/wiki" rel="nofollow ugc">here</a>.
This is the list of used social sites:
<ul>
<li>Hatena</li>
<li>Facebook Like Button</li>
<li>Facebook Share Button</li>
<li>Facebook Send Button</li>
<li>Twitter</li>
<li>Tumblr</li>
<li>Google Bookmark</li>
<li>Google +1</li>
<li>Delicious</li>
<li>Digg</li>
<li>reddit</li>
<li>LinkedIn</li>
<li>Instapaper</li>
<li>StumbleUpon</li>
<li>mixi Check</li>
<li>mixi Like</li>
<li>GREE Social Feedback</li>
<li>atode (toread)</li>
<li>LINE</li>
<li>Pocket</li>
<li>Pinterest</li>
</ul>

WP Social Bookmarking Light

This plugin inserts social share links at the top or bottom of each post.

Metaphor Widgets vs WP Social Bookmarking Light