Zen Cart Inventory Report Module v 1.6
https://www.zen-cart.com/downloads.php?do=file&id=1365

This Zen Cart Report module allows for you to check stock levels of the products
in your Zen Cart store. Values included in the table style report are:

Product ID
Quantity in Stock
Product title
Master category
Product Price
Extended Retail value of stock on hand

Included in this report is the ability to sort all of the values above
ascending/descending as well as viewing all or paginating the stock and drop
down filter to show this report by category instead of all products