Abstract: A system and method for providing modification of software applications and contents, without human intervention, during the transmission process in a network, which system comprising: an application and content server electronically connected to a network, a client electronic device in electronic communication with a network and being able to request for downloading of a client software application and contents, a client software application and contents which are characterized by being capable of being run in an electronic device, a proxy, filter or gateway electronically connected to a network through which client applications and its contents pass during transmission thereof to the client electronic device, a networked application for modification of client software applications and their contents electronically connected to the corresponding proxy, filter or gateway, corresponding to the present invention and characterized by being configured to detect, intercept and modify client software applications a