The purpose of this application is to market goods and communicate between institutions. Each user must determine his status: he is a customer, merchant, or distributor. He enters the registration page, fills out the file, and keeps the password for himself. If he is a merchant, he enters the goods. If he is a distributor, he uses the password to log in and follow up on invoices and customers. If he is a customer, he uses the password to place invoices.