Houdini - Houdini covers all the major areas of 3D production, including:
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Mixamo - A 3D character pipeline built for game devs
Cinema 4D - Cinema 4D is a 3D modeling, animation, motion graphics and rendering application.
Autodesk Maya - Maya is 3D computer animation software with powerful modeling, rendering, simulation, texturing, and animation tools for artists, modelers, and animators.
Sketchfab - Sketchfab is an industrial design software tool is useful for ideation and for beginners in the industrial design field.