Cool ! tks to share...
i used to have a txt files with all that kind of links, grabbed while browsing the web...
A good idea would be to put once in a while a post and stuck it so that we don't put the same links again and again.
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Animium used to be one of my favorites (http://www.animium.com). It works likely as ZGFX with a points system. And @Ethiopia regarding your remark about the 'quality'...yes, often (http://www.cadnav.com for example), its 'take me as iam" models, lowpoly, or/and without the mtl file ...have to rebuilt some time the whole mat links ! but, since its free, its a very base to make an enhanced one, thanks to all that iray shaders.