A system for retrieval of executable applications, comprising: a broadcast tele-vision receiver apparatus; and a server; wherein the broadcast television receiver apparatus includes a communication unit having an interface for bidirectional communication with a network and adapted to determine channel information from a currently decoded channel carried in a broadcast television signal, the channel information identifying the currently decoded channel, the communication unit being further adapted to send the channel information to a server over the network, and to receive application information from the server, the application information describing a set of applications which are available for execution, and to receive executable code components for the set of applications corresponding to the application information, and wherein the broadcast television receiver apparatus further includes a data processor adapted to execute the application whilst the channel is decoded; and wherein the server is adapted to receive the channel information over the network, to determine the application information by analyzing the channel information, and to send the application information to the communication unit.