Scott Taylor

Like Buttons makes your site instantly share-able. The plugin adds <code><meta></code> tags to your pages’ HTML <code><head></code> which will pull the proper content from your site when someone shares one of your site’s URLs on Facebook. Using some simple Theme functions, you can add Like buttons to posts / pages / custom post types AND a Like button for your blog / website
<pre><code>// in the Loop - for posts / pages / custom post types
the_like_button()

// a Like button for your blog / website, put it anywhere!
the_blog_like_button()

// use this if you don't want to register your app
the_like_iframe()
</code></pre>
Read More: http://scottctaylor.wordpress.com/2011/01/04/new-plugin-like-buttons/

Like Buttons

Adds Open Graph  tags to your posts/pages/etc, adds a Facebook Like button to posts using simple Theme functions. Requires a Facebook Application ID ( …

NodeCode

This Plugin adds the original Facebook, Twitter and Google+ Share Buttons after your post content, but without establish external connections.
<ul>
<li>simple, lightweight and secure</li>
<li>no external connections before clicking, protects the privacy</li>
<li>only HTML and CSS, no JavaScript, no external images</li>
<li>better than “2 clicks for more privacy”-buttons</li>
</ul>
<h4>Use in Template</h4>
By default, the buttons are inserted after the content. If you want to prevent the automatic insert, you can insert the following code into the functions.php:
 
The following functions are available in templates:
<ul>
<li><code>the_share_decentral($class)</code> – Displays the buttons on the template.</li>
<li><code>share_decentral($class)</code> – Returns the buttons as HTML code.</li>
</ul>
With the parameter <code>$class</code> (optional) you can add custom CSS classes, separated with white spaces.
Plugin by <a href="http://nodecode.de/" title="Node.js Tutorials (german / deutsch)" rel="nofollow ugc">NodeCode</a>

Share Decentral

The original Facebook, Twitter and Google+ Share Buttons, but without external connections. Simple plugin, pure HTML & CSS, no JavaScript.

Like Buttons vs Share Decentral