Substance Painter is a powerful 3D painting and texturing tool developed by Adobe, used to create detailed textures for 3D models. It allows artists to paint directly on 3D surfaces, providing real-time feedback and realistic results. Substance Painter supports advanced features like physically-based rendering (PBR), enabling the creation of materials with accurate lighting and shading. It integrates with other 3D software such as Maya, 3ds Max, and Unreal Engine, offering a seamless texturing workflow. With its extensive library of materials, brushes, and effects, Substance Painter is a key tool in the pipeline for high-quality 3D model texturing.