MMD Download (follow the troubleshooting guide!!)

MMPlus, a plug-in to assist you throughout your journey

MMDUtility, a plug-in to assist you animating

MME, a necessity to apply effects to your MMDs

Blender

MMD Tools for Blender (3.5 max)

PMXEditor (learnmmd.com)

Paint.NET

HandBrake, to transform your heavy .avi files in lightweight .mp4 files!