The source code for the Customer Flutter app is available in the Flutter Framework. Similarly, the Delivery Boy Flutter app source code is also available in the Flutter Framework. The Backend source code is developed using the Laravel Framework.
For detailed documentation and a quick start guide on how to use these source codes, you can refer to the provided link: https://codecanyon.net/item/fuodz-grocery-food-pharmacy-store-parcelcourier-delivery-mobile-app-with-php-laravel-backend/31145802
This link will provide a demo of the app and information on how to get started with the app development process.