OverMorpher Pose Space
OverMorpher PoseSpace is a 3Dsmax plugin dedicated to Pose Space Deformation.
It is pretty similar to the SkinMorph, Corrective poses driven by your Rig.
Except that the poses interpolation is more reliable. The SkinMorph modifier drives the poses depending on the angle between 2 bones.
And because of the nature of rotations in 3d softwares and rotation orders, in some cases, the interpolation doesn’t work as expected.
Mainly on bones that have more than 1 free angle.
This plugin is based on what is called a Radial Basis Function, and in this case, it is a bit simplified.
So it doesn’t use angles between poses, but the distance between two points, which solves the angle problem, and opens new possibilities.