Web applications are popular due to the ubiquity of web browsers, and the convenience of using a web browser as a client. The popularity of mobile apps has continued to rise, as their usage has become increasingly prevalent across mobile phone users. Application software applies the power of a particular computing platform or system software to a particular purpose. Some applications are available in versions for several different platforms; others have narrower requirements. Regarding maintenance, web application need to be installed only once where as desktop applications are to be installed separately on each computer and mobile application need to be installed in Smartphone’s as per need. On ease of use desktop applications are confined to a physical location, while web application and mobile application can be accessed from any location using the Internet. In case of security, web applications and mobile apps are exposed to more security risks than desktop applications as have a total control over the standalone applications and protect it from various vulnerabilities. In case of connectivity, web and mobile application development service totally dependent on Internet connectivity and speed. Due to absence of Internet or its poor connectivity can cause performance issues with both web and mobile applications while desktop applications are standalone in nature and hence do not face any hindrances resulting from Internet connectivity. Depending upon cost factor, web and mobile application development along with its maintenance involve higher costs and mostly recurring in nature but desktop applications are purchased one time and there are not continually occurring charges. However, in certain cases, maintenance fees may be charged for desktop applications.
However desktop applications could be used on standalone machines only, but with the advent of internet and online commerce along with mobile application development gained importance. Application development includes full scope of services development, implementation and ongoing management. When it comes to developing new applications or maintaining existing ones, the stakes are correspondingly very high.