OpenSimWorld is the directory of 3D Virtual Worlds based on OpenSimulator and connected through the HyperGrid. Learn More

Now that the new PBR-enabled Firestorm is out...

https://opensimworld.com/post/110361

...in case you want to experiment with PBR, and you need materials:

ambientCG offers a whole bunch of PBR materials. Not only are they free-of-charge, but they're licensed under Creative Commons CC0 which is practically the public domain.

https://ambientcg.com/list?type=Material,Atlas,Decal