Created in 2009, Square is a company based in the United States that develops tools to allow merchants to collect payments, manage staff and conduct their business in store or online.
Square POS software is a comprehensive software program designed for businesses and businesses of all types and sizes. It allows the management of the activity (in particular management of sales, receipts, history, etc.) but also the management of payments and the administration of the various points of sale.
More information on Square.