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.

Shoppdeveloper.com

With this plugin installed you can supply your customers with previous/next buttons on the product pages of your Shopp webshop. They will no longer have to go back and forth between category/catalog pages and product pages when browsing a category. You can translate the plugin to your own language, .pot file is included. Dutch language files are already present.
The difference between this plugin’s output and the regular Shopp ‘next,previous’ output is, this plugin’s output will stay inside the chosen categorie. So if your customer is looking at a lamp, browsing the category ‘Yellow’, the next product will also be in the category ‘Yellow’ and not just another product in for example the category ‘Lamp’.
By use of the Shopp tag <code>shopp('product','browser',"show=both&cat=$cat")</code>, you set whether you want to display ‘previous’, ‘next’, or ‘both’. Take a look at the more detailed instructions below.
By use of the settings page, you specify
<ul>
<li>the phrases used for ‘Previous’ and ‘Next’</li>
<li>to use product thumbnails instead of ‘Previous’/’Next’</li>
<li>the size of the thumbnails</li>
<li>to use predefined Shopp image-setting</li>
<li>which categories to exclude (‘Previous’/’Next’-buttons will not appear on those Shopp product pages)</li>
<li>which products to exclude (‘Previous’/’Next’-buttons will not appear on those Shopp product pages)</li>
</ul>

Shopp Product Page Browser

Add "previous/next"-product links to your Shopp webshop's product pages.

Shopp Improved vs Shopp Product Page Browser