A method for processing requests to access computing virtualisation services, virtualisation gateway, and web browser. The processing method is intended to be implemented by a gateway maintaining a database (9) containing, for each (3, 4, 5) of a plurality of computing virtualisation platforms, at least one service (VS3, VS4, VS5) offered by that platform and connection information for connecting to that platform, and comprises: - the receipt of a request to access a computing virtualisation service (VS3) offered by a said platform (3) sent by a web browser (7) of a terminal (2); - if the requested service is in the base, generating, based on the connection information associated in the base with that service, a system application (JSApp) adapted to the service (VS3), and comprising a module (CX-MOD3) for connecting to the platform (3) capable of allowing the terminal to negotiate the creating and maintaining of a communication session with it; and - the sending of the system application to the web browser.