Rob Holmes

Enabling this plugin allows you to define which of wordpresses included javascript files youd like to use on the frontend, also allowing you to download and make available a range of frontend development libraries straight from their github repostiory locations.
<h4>Documentation</h4>
All of the documentation is on github https://github.com/onemanonelaptop/scripts 
If you have any problems or recommendations for improvement please use the github issue queue https://github.com/onemanonelaptop/scripts/issues

Scripts

This plugin provides a central location for the installation and inclusion of javascript libraries in a theme or plugin. All to often i have packaged  …

Brian Zeligson

This plugin uses the wp_print_scripts action hook, as opposed to output buffering and regex used by alternative implementations.
The downside of this method is that only scripts loaded via wp_enqueue_script will be affected by the plugin, the upside is better 
performance by avoiding output buffering on every page load.
The plugin will preserve any localizations added via wp_localize_script, and uses the first parameter passed to wp_enqueue_script 
as the label for the script in the head.js call. For example,
<pre><code>wp_enqueue_script('jquery', 'https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js');
</code></pre>
would show up as
<pre><code>head.js({"jquery": "https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"});
</code></pre>
This allows you to run callbacks when specific scripts are ready, such as
<pre><code>head.ready('jquery', function() {
 //do something when jquery is loaded
});
</code></pre>
For more on HeadJS usage, see http://headjs.com/

WP HeadJS

Uses HeadJS to load your enqueued scripts asynchronously, in parallel, executing them in order.

Scripts vs WP HeadJS