What is MMD Tools Append?

MMD Tools Append (formerly known as MMD UuuNyaa Tools) is a Blender addon that works with MMD Tools to add features that focuses on Blender workflows.

Rigify Integration

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With Rigify Integration, you can control MMD models using Rigify rigs. You can import VMD files directly to integrated rigs.

Physics Adjuster

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You can convert MMD Rigid body physics to cloth simulation.

Material Assets

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MMD Tools Append includes some material assets to make models instantly look better.

List of available materials

Humanoid Renamer

Humanoid Renamer allows you to assign MMD bone names to models automatically. It can also convert models into MMD in one click.

You can read more about it from here.