Abstract: A method and system for the creation and deployment of applications on several types of client devices, including a client application hosted on a client device, and a server hosting a main application, includes the main application including a logic part and a graphic part and a virtual module for storing a user interface designated as a panel space. The main application includes an interface selector configured to match a user interface type to each client device type and a virtual graphic interface management module designated as a virtual space. The virtual space: including a data communication module, is configured to allow communication between the logic part of the main application and the graphic part, is configured to permanently store the activation status of the main application following changes ordered by at least one of the client applications.