This page contains links to various 3D websites. Please note if the contains mature content it will say under the link in the description.
Daz 3D
One of the best known 3D asset site for its own application. This site offers a wide variety of 3D assets, tools, scripts and other useful things. There are many helpful people that use the forums. Daz 3D is the maker of Daz Studio which is a 3D Render application that you can use to make images with.
Renderosity
This site is also one of the bigger better known sites that have many assets mainly for Daz Studio and Poser. Caution that there maybe some nudity on the site, specially in the gallery and with some of the character packs there will be nudity with an advisory. Renderosity has recent bought out Poser which was the top 3D Render application available until Daz Studio got its wings
*Disclaimer many people still love and use Poser. Sounds like Renderosity is working hard to get it updated and make improvements.
Hivewire3D
Site owned by Hivewire3D thats been around for a few years now. Hivewire3D also has products available at Renderosity but there are exclusive products available on their own site. I first discovered them on Renderosity because of the Hivewire Horse which is awesome and has many options. Also check out the Hivewire Big Cat and Dog. And we cant forget the Housecat!
Think, Draw, Art!
This is a personal site for ShibaShake who does some gorgeous images. They also have tutorials, tips and contests on the site.