A thin client server system including a client server configured to transfer at least one roaming keyboard file to at least one thin client terminal is described. The thin client terminal includes a touch-sensitive interface, session layout module and a client processing module. The session layout module generates a selection configuration for selecting the type of interaction with the client server system. The client processing module applies the at least one roaming keyboard file and to dynamically generate, input sub-modules for receiving communication from at least one user and an output sub-module for generating output to at least one user. The generated input sub-module including, a virtual keyboard sub-module, and a pointer-pad sub-module and the generated output sub-module including a virtual screen sub-module for generating output to at least one user, wherein the client sever allows modular collaboration while multiplexing input and output message between sub-modules.