Extension
Magento:: free gift product module
app/code/community/Techievolve/Freeproduct/etc/config.xml app/code/community/Techievolve/Freeproduct/Exception/InvalidQuantity.php app/code/community/Techievolve/Freeproduct/Exception/ProductNotFound.php app/code/community/Techievolve/Freeproduct/Exception/ProductNotSalable.php app/code/community/Techievolve/Freeproduct/Helper/Data.php app/code/community/Techievolve/Freeproduct/Model/Consts.php app/code/community/Techievolve/Freeproduct/Model/Observer.php app/code/community/Techievolve/Freeproduct/sql/freeproduct_setup/mysql4-install-0.1.0.php app/etc/modules/Techievolve_Freeproduct.xml app/design/frontend/smartwave/porto/layout/freeproduct.xml app/design/frontend/smartwave/porto/template/freeproduct/checkout/cart/item/default.phtml