Abstract: A computer has an operating system with a dynamical data exchange server (4) managing dynamical data exchange channels to and from applications; the server receives a flow (8) of fresh data. For refreshing data in an application (2), a request DLL (26) indicates to the server (4) the nature of data requested by the application (2), without however requiring an answer from the server. A vocable system link process (32) creates or modifies dynamical data exchange channels (14) between the application (2) and the server (4) according to the nature of data indicated by the request DLL. Last, fresh data is pushed towards the application (2) on the dynamical data exchange channel (14) by an update process (34).