From Mirye Software:
Shade 3D for Unity is based on the full version of Shade, a powerful 3D modeling, rendering and design software, used worldwide by illustrators, animators and designers for over 27 years.
Full Feature List
FBX Mesh and Rig Support with Inverse Kinematics
Paintable Bone Weight Mapping Tool
Advanced 3D Polygon Mesh Editing
Bezier Spline Modeling
Simple Spring Motion Simulator
Baked Simulation result is exportable to Unity.
Key Frame Animation
Baked Key Frame for Unity is output in addition to Key Frame for Shade
Material and Shader Editing
UV Editor and Texture Map Management
Draft Ray Trace Rendering for Preview Rendering