3d cafe:

http://www.3dcafe.com/asp/freestuff.asp (Free Stuff)
http://www.3dcafe.com/asp/meshes.asp (3d models)
http://www.3dcafe.com/asp/software.asp (plugs & Software)
http://www.3dcafe.com/cgi/classifieds/classifieds.cgi (classifieds adds)
http://www.3dcafe.com/asp/sounds.asp (Sound Effects)
http://www.3dcafe.com/asp/textures.asp (Texture)
http://www.3dcafe.com/asp/tutorial.asp (Tutorial)
http://www.3dcafe.com/asp/fonts.asp (Fonts)
http://www.3dcafe.com/asp/games2.asp (Games)
http://www.3dcafe.com/asp/photographs.asp (Photographs)
http://www.3dcafe.com/asp/webtools.asp (Web Tools)

highend3d:

3ds max

http://www.highend3d.com/3dsmax/plugins/ (Plugins)
http://www.highend3d.com/3dsmax/shaders/ (Shaders)
http://www.highend3d.com/3dsmax/tutorials/ (Tutorials)
http://www.highend3d.com/3dsmax/tools/ (Tools)

Maya

http://www.highend3d.com/maya/plugins/ (Plugs)
http://www.highend3d.com/maya/paintfx/ (Paint FX Brushes)
http://www.highend3d.com/maya/shaders/ (Shaders)
http://www.highend3d.com/maya/tutorials/ (Tutorials)