Shopist is very easy eCommerce for the laravel framework. It has powerfull multivendor system and products designer also. User will able to design using this feature. Build on laravel and Bootstrap.
Demo: https://codecanyon.net/item/shopist-laravel-ecommerce/17475699
source http://www.codelist.cc/scripts/243350-shopist-v300-laravel-multivendor-ecommerce-cms-and-designer.html