DAZ Studio 4 has just been released. It is a free 3D figure posing application and animation tool similar to Poser. It is free, but if you want to have unique character models you need to buy them and they do have a extensive library just for that. Now It does come with a default characters and a few props and poses, but is a bit limited. There is also a library of free models and props, still limited, selling them is where they make their money. Now I have not spent that much time with it yet, but it is fairly intuitive.
This version seams to be free, but there is a buy button and they interchange ‘try’ and ‘free’ occasionally. Version 3 was a free app but here are two versions, DAZ 3 and DAZ 3 Advanced. Daz 3 is the core application which is FREE and basically the main differences with the advanced are rendering features and a few modeling features.
The software can be found here:
http://www.daz3d.com/i/software/daz_studio
Here is a link to the feature comparison.
http://www.daz3d.com/i/software/daz_studio/comparison?_m=d