The invention relates to a computer-implemented method for providing an alternative GUI to a client application. A proxy computer comprises a history with request sequences respectively representing a part of a workflow predefined by an original GUI. Each request sequence in the history has been transmitted previously from an original GUI displayed in a client application via the proxy computer and via a network to a backend application. The proxy computer intercepts a current request transmitted from the original GUI to the backend application via the network and the proxy computer, compares the current intercepted request with the request sequences in the history, identifies and evaluates a matching request sequence for generating the alternative GUI, the alternative GUI completely or partially implementing the part of the workflow represented by the identified request sequence and returns the generated alternative GUI via the network to the client application.