Sometimes when you divide up your WordPress content into categories it all ends up in sub-categories of one or two main categories that don’t have any content themselves.
With the widget you can add a list of sub-categories even if the parent doesn’t have posts.
You can display and filter sub-categories in various ways:
<ul>
<li>Use the parent category as the widget title</li>
<li>Show post counts in bracket next to the name</li>
<li>Hide empty sub-categories</li>
<li>Add a link to the parent category to the widget title</li>
<li>Show the full sub-category tree so it include sub-sub categories and so on as well</li>
<li>Display the list as dropdown rather than as links</li>
<li>Use the first category of the current post as the parent</li>
<li>Exclude one or more sub-categories from the list</li>
<li>List the categories in reverse order</li>
</ul>

Sub Categories Widget

This Widget lists the sub-categories for a given category.

Muntasir Rahman

When you click a category in woocommerce , then all products listed under that category . But if the category has some sub category then is not displayed . So Woocommerce Subcategory Thumb plugin will display the sub categories thumb as along with product . See the screenshot .
NB : wootheme compatible only .
If you have suggestions or bugfixes for the plugin, contact me in my official site (http://myplugin.tophostbd.com/)
If you want to translate the plugin into your language, <a href="http://myplugin.tophostbd.com/" rel="nofollow ugc">contact me</a>

Woo Subcategory Thumb

Display sub categories as a thumb in parent category page

Sub Categories Widget vs Woo Subcategory Thumb