Michael Beckwith

This plugin registers shortcodes for the following websites, social service on the left, format for the shortcode on the right:
Service / shortcode version
<ul>
<li>Blogger [blogger]</li>
<li>BookHype [bookhype]</li>
<li>Colourlovers [colourlovers]</li>
<li>DeviantArt [deviantart]</li>
<li>Digg [digg]</li>
<li>Dribbble [dribbble]</li>
<li>Etsy [etsy]</li>
<li>Facebook [facebook]</li>
<li>Flickr [flickr]</li>
<li>Flipboard [flipboard]</li>
<li>GitHub [github]</li>
<li>Goodreads [goodreads]</li>
<li>HackerNews [hackernews]</li>
<li>IMDb [imdb]</li>
<li>Instagram [instagram]</li>
<li>Last.FM [lastfm]</li>
<li>LinkedIn [linkedin]</li>
<li>Myspace [myspace]</li>
<li>Patreon [patreon]</li>
<li>Pinterest [pinterest]</li>
<li>Reddit [reddit]</li>
<li>Slideshare [slideshare]</li>
<li>SpaceHey [spacehey]</li>
<li>Soundcloud [soundcloud]</li>
<li>TikTok [tiktok]</li>
<li>Twitch [twitch]</li>
<li>Twitter [twitter]</li>
<li>Vimeo </li>
<li>X [x]</li>
<li>Yelp [yelp]</li>
<li>YouTube </li>
</ul>
All examples updated for v1.1
Example 1:
<pre><code>[twitter name="JoeSomeone" text="some text you want the link to appear as"]
</code></pre>
results in this on your post/page:
<pre><code><a href="http://www.twitter.com/JoeSomeone" title="JoeSomeone's Twitter profile" class="twitter_smsc">some text you want the link to appear as</a>
</code></pre>
Example 2:
<pre><code>[twitter name="JoeSomeone"]
</code></pre>
results in this on your post/page.
<pre><code><a href="http://www.twitter.com/JoeSomeone" title="JoeSomeone's Twitter profile" class="twitter_smsc">JoeSomeone (Twitter)</a>
</code></pre>
Example 3:
<pre><code>[twitter name="JoeSomeone" target="_blank"]
</code></pre>
results in on your post/page.:
<pre><code><a href="http://www.twitter.com/JoeSomeone" title="JoeSomeone's Twitter profile" target="_blank" class="twitter_smsc">JoeSomeone (Twitter)</a>
</code></pre>
Filters:
<pre><code>function example_add_site( $sites ) {
 $sites['somesite'] = array( 'Some Site', 'http://www.somesite.com/user/' );

 //Return the $sites array
 return $sites;
}
add_filter( 'smsc_shortcodes', 'example_add_site' );

function example_add_classes( $classes ) {
 $classes[] = 'someclass';

 return $classes;
}
add_filter( 'smsc_classes', 'example_add_classes' );

function example_change_final_link( $output, $shortcode ) {
 if ( 'somesite' == $shortcode ) {
 $output_new = $output . ' <--Awesome profile!';
 }

 return $output_new;
}
add_filter( 'smsc_final_link', 'example_change_final_link', 10, 2 );
</code></pre>

Social Media Shortcodes

Registers shortcodes for your posts, pages, or post types that display user profile links to various social media websites.

Automattic

WooCommerce

Claudio Sanches

WooThemes

This plugin provides a TinyMCE dropdown button for you use all <a href="https://wordpress.org/plugins/woocommerce/" rel="ugc">WooCommerce</a> shortcodes. 
See list of shortcodes in <a href="http://docs.woothemes.com/document/woocommerce-shortcodes/" rel="nofollow ugc">Shortcodes included with WooCommerce</a>.
Starting WooCommerce 2.2, this TinyMCE button will no longer be part of WooCommerce and will only be available by using this plugin.
<h4>Requeriments</h4>
<ul>
<li>WordPress 3.9 or later.</li>
<li>WooCommerce 2.2 or later.</li>
</ul>
<h4>Contribute</h4>
You can contribute to the source code in our <a href="https://github.com/woothemes/woocommerce-shortcodes/" rel="nofollow ugc">GitHub</a> page.

WooCommerce Shortcodes

Adds a button in TinyMCE editor allowing use of WooCommerce shortcodes. Beautifully.

Social Media Shortcodes vs WooCommerce Shortcodes