Topher

Provides a user interface under the Reading Settings page for choosing what post element to orderby. Also allows the site owner to chose ASCending or DESCending.
NOTE: Does not allow for arbitrary ordering via drag and drop. This is a simple setting.
<h3>Usage</h3>
Once it’s installed, go to Settings -> Reading section, scroll to the bottom, and choose an orderby and order option.

Default Post Sort

I'm glad I came across this plugin. It does exactly what the title says and nothing more which is what I want in a plugin. 

Simple and straightforward. Great plugin.

Provides a user interface for setting a default post order.

Phill Brown

Dynamic Sorting is a lightweight WooCommerce plugin that links up with your Google Analytics account and allows you to sort products based on a website’s usage statistics. Out the box, it adds two ordering options – sort by views and sort by visits.
Google Analytics sorting options can be hidden from the user facing sorting dropdown. This means you can set the default sorting order to feature your shop’s most popular products without your customer knowing.
There is also a premium version of the plugin called <a href="http://pbweb.co.uk/sort-by-ga-shop" rel="nofollow ugc">Sort by Google Analytics</a> that lets you sort any post type by any Google Analytics metric. WooCommerce Dynamic Sorting works with the product post type and supports sorting by pageviews and visits.
The Indexer
For performance reasons the plugin operates off a locally downloaded index of Google Analytics data. The indexer runs twice a day and you can trigger it manually through the Dynamic Sorting Settings section in the Catalog tab in WooCommerce Settings. Once the indexer has run at least once, the plugin is ready to use.
To increase the batch of the indexer to 400, add the following code to your plugin or theme:
<pre><code>add_filter( 'woocommerce_dynamic_sorting_indexer_data_batch_size', create_function( '', 'return 400;' ) ); </code></pre>
Requirements
<ul>
<li>WordPress 3.1+</li>
<li>WooCommerce 1.0+ plugin installed</li>
<li>PHP cURL extension</li>
<li>PHP JSON extension</li>
<li>Google Analytics Account</li>
</ul>

WooCommerce Dynamic Sorting

WooCommerce plugin that links up with Google Analytics to sort products based on page views and visits.

Default Post Sort vs WooCommerce Dynamic Sorting