MMD Tools contains various functions for editing MMD (MikuMikuDance) models.

• Import/Export
  • Model data (.pmd, .pmx)
  • Motion data (.vmd)
  • Pose data (.vpd)
• Chop and Join model parts
• Rigid body editing
• Material editing
• Motion editing

Original Link:

https://extensions.blender.org/add-ons/mmd-tools

Download: