MakeHuman© is a free, Open Source, interactive modeling tool for creating custom 3D human characters. These characters can be modeled in minutes and can then be used with many other modeling and rendering programs to incorporate realistic human figures into computer generated images and animations. Features that make this software unique include the tetra-parametric GUI© and the Natural Pose System©, for advanced muscular simulation. More info »
I used blender a lot and when I needed a human model this program has a blender script that allows you to make the models within blender. so it made the modeling process much quicker and easer for me to do.