The full name of MMD is MikuMikuDance, which is a free and open source 3D animation software. It was originally developed by Japanese software company PolygonMagic and optimized for HatsuneMiku's role in Vocaloid. Users can add models, music and actions to the scene to create their favorite 3D animated movies or videos. Users can also use this software to create still pictures and GIF images.