Business software or business application is any software or set of computer programs that are used by business users to perform various business functions. These business applications are used to increase productivity, to measure productivity and to perform business functions accurately. The term covers a large variation of users within the business environment, and can be categorized by using a small, medium and large matrix: Technologies that previously only existed in peer-to-peer software applications, like Kazaa and Napster, are starting to feature within business applications.