remm

This plugin provide widget that display a list with categories and posts in your sidebar. 
Widget can save the opened categories, and use cache.

Wp Ajax Tree

This plugin provide a widget that display a category and pages tree on your sidebar, using ajax to collapse categories.

erwanpia

<ul>
<li>Browse big woocommerce databases of products and categories,</li>
<li>drag and drop rearrange categories,</li>
<li>search by SKU / TITLE</li>
<li>custom product sort order : order product by title, by price, by sku, by total sales</li>
</ul>
The idea of this plugin comes from the best opensource ecommerce platform after woocommerce : Magento really beats them all in terms of ease of administration, and the most interesting feature is the category tree hierarchy with products display : this plugin brings this magical feature to wordpress , displaying a tree of categories with product thumbnail display.
Please note
<ul>
<li>Support development : full woocommerce is donationware, please use the donate button on you right hand site to help further developments and new feature implementation</li>
<li>this is a pre release version for developers only – Only displays 100 first element of selection</li>
<li>future versions will include many woocommerce enhancements </li>
</ul>
Dependencies 
https://github.com/mar10/fancytree 
https://github.com/mar10/fancytree/wiki/ExtDnd 
http://wwwendt.de/tech/fancytree/demo/#sample-ext-dnd.html 
http://sophilabs.github.io/jquery-counter/

Full Woo Commerce Admin

Enhanced Woocommerce administration plugin with category hierarchy display / product list

Wp Ajax Tree vs Full Woo Commerce Admin