Digital Human Modeling tools simulate a task performed by a human in a virtual environment and provide useful indicators for ergonomic, universal design and representation of product in situation. The latest developments in this field are in terms of appearance, behaviour and movement. With the considerable increase of power computers ,some of these programs incorporate a number of key details that make the result closer and closer to a real situation. With the differences in terms of performance, qualities, limitations, the choice of the tool becomes complicated in this wide range of possibilities. In this context, we propose to study and compare the most human modelling software available on the market, and thus provide an aided decision tool to help the designer to get the most adaptable tool.