A desktop application is one that typically runs as a standalone application in laptop or on a desktop computer. It does not require internet connection availability or a web browser. They must be installed on your computer to access it. Though these desktop application provides high security, they have various disadvantages such as the same user cannot access his software from a different place, collaboration of the data between the users is difficult since the data is not centralized etc. To overcome these drawbacks, an approach is explained in the paper which builds a RESTful web service considering the already available desktop application and its basic structure. Thus, eradicating the limitations of the desktop application. REST is an acronym for “REpresentational State Transfer”. They are used to build service of the web that are lightweight, maintainable and scalable in their nature. The built service on REST architecture is known as the RESTful service and the underlying protocol for this REST is the HTTP, the basic web protocol. The approach may be followed by the developer to build a RESTful web service from scratch. The best available software are mentioned for the storing of the backend database, testing the developed methodologies, the use of following the models such as waterfall model and agile model, the architecture that the framework follows, the servers used, the hardware and software requirements for the development of the software and brief idea about the development and accessing of the front-end using the most suitable technologies.