A point of sale (POS) application is software used to run a business. It can be used to keep track of inventory, order supplies, and process transactions.

POS applications are often built into retail point-of-sale systems and other types of computerized cash registers that businesses use. They can also be stand-alone programs that are used to manage inventory or sales data on a desktop computer or mobile device.

A POS system is usually connected to a computer network and can run on either a local area network (LAN), wide area network (WAN), or the internet.

Some POS applications include functionality for managing customer information, employee timecards and payroll, and accounting records.