In opencart, whenever a product has been viewed by user , a view count is
increased in the product table.

So this module will display the Most Viewed Products by category based on this count value. Its ideal to to display the module for a category pages and it will display the most viewed products by a category.

------ You can try product carousel with item LABEL --------------

http://www.opencart.com/index.php?route=extension/extension/info&token=1475c0812e5b1cd2dd082e153b99ecba&extension_id=23771