https://superhivemarket.com/products/breakdowner

Blender 5.0

• Breakdowner is a blender 'Onion Skinning' addon that was specifically designed with animators in mind. Animating is already difficult, especially when you add the mental burden of trying to remember what your key poses look like on multiple different frames. Let this addon show you the information you need while you concentrate on whats important. Breakdowner strives to produce clear and understandable information about key-frames that you have set. It will never generate guides on interpolated frames in between your key-frames. This keeps your view-port clean and clutter free, which allows you to focus on your breakdown pose. Breakdowner follows the rules of blender's built in operator (Pose Breakdown), all the way to its C++ source, for generating breakdown guides.