A CDE Definition

Software that is essential for running a business such as order entry, billing, inventory and manufacturing. The term means that these functions are necessary to derive revenue, make a profit and put food on the table (the bread and butter). See application program.

Software that processes data for the user. Except for "system software," which provides the infrastructure in the computer (operating system, utilities and related components), all software programs are application programs.

In the entertainment world, it refers to games (see gaming). In the business world, it refers to the data entry, update, query and report programs that make up the company's bread and butter information systems (order entry, billing, inventory, human resources, payroll, manufacturing, etc.).

The term may also refer to a generic application, often called a "productivity program," such as a Web browser, spreadsheet, word processor, database or email program. For a list of major application software categories, see application software. See productivity software, application, program and software. Contrast with system program.