Aaron D. Campbell

Shopp Improved is a plugin that extends the popular 
<a href="http://shopplugin.net/" rel="nofollow ugc">Shopp eCommerce solution for WordPress</a>. 
You must have the <a href="https://shopplugin.net/store/" rel="nofollow ugc">Shopp 
Plugin</a> in order to use this plugin.
I recently worked on a site where I used the Shopp WordPress plugin to set up 
E-Commerce. The first big issue that I ran across was allowing for user 
customizations of products. For example, if a product can be engraved with a 
name, includes the person’s initials, can include a message, etc. Shopp does 
include the ability to add these kinds of user input fields, but it’s done 
through a template tag. This means that you either have to apply it to all 
items, or you need a developer to set it up on a per-product basis. My client 
has quite a few products that are custom-made, and they really needed to be able 
to set up these fields themselves.
In comes Shopp Improved. It creates a user interface to allow you to easily add 
these fields to any product. The inputs can then be easily integrated into a 
shopp product template with just a couple lines of code.
Requires PHP 5+.

Shopp Improved

A related posts plugin that works quickly evenShopp Improved is a plugin that extends the popular Shopp eCommerce solution for WordPress.

Barry Hughes

This plugin works with and depends upon the Shopp e-commerce plugin for WordPress. It is designed to integrate with the 1.2.x branch of Shopp and has been successfully tested with Shopp 1.2.1.
Enough of that, what does it do?
<ul>
<li>Shopp already ships with a widget that can be used to display product categories. This is an alternative to that widget.</li>
<li>Select only those categories that you wish to include, ignore the rest.</li>
<li>Easy to use: simply check the boxes for the relevant categories, choose the display mode (dropdown, regular list etc) and you’re done.</li>
<li>A convenient way to build category-based store menus in the sidebar!</li>
</ul>
This plugin was written by <a href="http://freshlybakedwebsites.net" rel="nofollow ugc">Barry Hughes</a> and can be supported by <a href="http://freshlybakedwebsites.net/say-thanks-with-a-beer/" rel="nofollow ugc">buying the author a beer</a>.

Shopp Custom Categories Widget

Provides an alternative category widget featuring fine grained control for use with the Shopp plugin.

Shopp Improved vs Shopp Custom Categories Widget