Apps with 'PBR Texturing' feature

The Public 3D Asset Library.

Substance 3D Painter has the tools you need to texture your 3D assets, from advanced brushes to Smart Materials that automatically adapt to your model. Breathe life into your art.

ambientCG (previously CC0Textures.com) is a free material resource for PBRs, HDRIs, models and textures licensed under Creative Commons Public Domain (CC0).

Assets for achieving photorealism.