I am looking for a solution to duplicate category including all settings, products and all children categories.
I have researched on the forum and found some extensions which are paid.
https://marketplace.magento.com/mageside-module-duplicatecategory.html
Can anybody help to achieve this by programmatically or suggest for a free module?
Mageants
, which will provide you the features like duplicating categories with the same configuration settings for all subcategories and also duplicates the parent categories, all subcategories, copy product relation of subcategory and sub-categories rules, and control product relations.