Bricks Brought to Life writes:
AssemblMe is an add-on for Blender that makes layer-by-layer animation efficient and non-destructive. Blender offers excellent physics and particle simulation tools, but when you've got a final resting place for your objects, you'll find yourself keyframing each object individually. AssemblMe provides an intuitive and efficient workflow for creating (and adjusting) assembly and disassembly animations in seconds.
Great work Bart