Blender - Blender is the open source, cross platform suite of tools for 3D creation.

Material Maker - Cross-platform, procedural texture generation tool.

Cinema 4D - Cinema 4D is a 3D modeling, animation, motion graphics and rendering application.

Substance Designer - Substance Designer is a node-based non-destructive application for material authoring.

Autodesk 3DS Max - 3ds Max is software for 3D modeling, animation, rendering, and visualization. Create stunning game enrivonments, design visualizations, and virtual reality experiences.

Filter Forge - On the surface, Filter Forge is just a Photoshop plugin, a pack of filters that generate textures...