Running COMSOL Multiphysics as a Client-Server Application The COMSOL Multiphysics client and server applications are available on all platforms. Running COMSOL Multiphysics in Client-server MOde on the Same Computer The COMSOL Multiphysics client and the COMSOL Multiphysics server can run on the same computer and with all available license types: named single-user license (NSL), CPU locked license (CPU), and floating network license (FNL). Running COMSOL Multiphysics in Client-server Mode on Different Computers The COMSOL Multiphysics client and COMSOL Multiphysics server can also run on different computers, but this configuration requires a floating network license (FNL).