API Product editor (internet shop)

Hi All We would like get program in which we will be able to edit products from our webshops in local computer, data should be synchronised by API I have attached (ods) with description of funconalities which program must have in first version,. Program should operate fluently with 1 000 000 products . Program must operate with different languages avalible in API gate. I have attached print screens with that how program should looks like and also with gate description.