An Application software, are often called as the productivity programs or end-user programs as a result of that they enable the user to finish the tasks, such as creating databases, documents, spreadsheets, and publications, doing online research, running businesses, sending email, designing graphics, and even playing games.
An application that runs stands alone on a desktop or laptop computer. These applications are installed on a single computer which performs specific tasks. Some of these applications can be used by multiple users in a networked environment.
A web application or “web app” is a software program that runs on a web server. They run inside web browsers so that the developers do not need to develop web apps for multiple platforms.
A mobile application, most commonly referred to as an app, is a type of application software designed to run on a mobile device, such as a smartphone or tablet computer. These apps are generally small, and individual software units with limited function. Thousands of mobile applications are sold for iPhone, iPad and iPod Touch and the use of this software has been popularized by Apple Inc. and its App Store.