This module adds the tab "Similar products", which are automatically generated 4 or more products in the same category as the product itself. Furthermore there is no need to add items manually, the following products are formed after the main product id, and fixated.

Capabilities:
arbitrary heading;
output to any scheme (page);
image size;
limit;
sorting order;
Installation: unzip the root of the site. Install and configure the output in the Product Scheme (on the other will not work)

It works on all versions 2.x