Downloadable software for simulation modeling; computer software for conducting agent-based, system dynamics, and discrete-event simulations, either separately or in combination

Computer systems analysis; computer software design; computer programming; [ consultancy in the field of computer hardware; ] updating of computer software; maintenance of computer software; data conversion of computer programs and data, not physical conversion; [ computer system design; ] rental of computer software; [ duplication of computer programs; ] [ recovery of computer data; ] installation of computer software