The aim of this term project is to study web technologies for developing information systems, requirements analysis, a system design for selling goods which supports sales recording to electronic records of sales and stock recording. It also offers the customer portal for bills handover and customer support by a ticket system. The system design is based on already developed cash register and in comparison with it will be a more advanced and far more universal solution. The application is built on commonly available and free technologies, such as PHP 7.1 with Nette framework, CSS framework Bootstrap and jQuery. Very useful function of cash is the product suggester which is based on the Apriori algorithm. The suggester suggests products based on items from the actual opened bill and analysed receipts with previously purchased items. The complete solution will then be released to the public as an opensource, which does not exist yet.