Binternet

This plugin is an extended version of <a href="https://wordpress.org/plugins/categories-images/" rel="ugc">Categories Images</a>.
The Categories Multiple Images Plugin allow you to add unlimited amount of image to a category or any other taxonomy.
You can use:

to get the direct image url and put it in any tag in your template.
Also from settings menu you can exclude any taxonomies from the plugin to avoid conflicting with another plugins like WooCommerce!
More documentation 
https://github.com/Binternet/WordPress-Plugin-Categories-Multiple-Images

Categories Multiple Images

The Categories Multiple Images Plugin allow you to add image unlimited images to category or any other taxonomy.

Nilambar Sharma

Are you frustrated by the lack of customization options in default Category widget in WordPress? Then this plugin is for you. Works in similar fashion but with several customization options. Cheers !

NS Category Widget

very nice plugin does what it says!

good job for dev!

Just what i needed

A plugin to add widget for listing Categories and Taxonomies. Extending Default WordPress Category Widget.

Categories Multiple Images vs NS Category Widget