Square, Inc. is a financial services and mobile payment company founded in 2009 by Jack Dorsey and Jim McKelvey. It provides tools for businesses to accept card payments through a small, portable card reader that connects to smartphones and tablets. Square also offers various services, including point-of-sale systems, online payment processing, and business analytics. In addition to payment solutions, Square has expanded its offerings to include Square Cash, a peer-to-peer payment service, and Square Capital, which provides loans to small businesses. The company aims to simplify financial transactions for both merchants and consumers, making commerce more accessible.