For applying PBR to 3D models, the best Substance tools are Substance 3D Painter (direct texturing) and Substance 3D Designer (procedural materials).
Substance Painter lets you paint PBR-compliant textures (albedo, metallic, roughness) directly on models—ideal for detailed characters or props. Substance Designer creates reusable procedural materials (like wood, metal) that follow PBR rules, great for scalable environments.
New to PBR? Start with Substance 3D Painter—it has built-in PBR presets to simplify learning while getting professional results.