XBreaker is a fantastic plug-in for fracturing geometry by Nitroman. It works with primitives, nurbs objects, splines and polygons. Integrating seamlessly with mograph and modynamics, it takes just a few quick clicks to set up an entire scene. Integrating seamlessly with mograph and modynamics, it takes just a few quick clicks to set up an entire scene. (Requires Cinema4D 11.5 and Mograph)

Download: XBreaker ver. 1.71 (Put the file in maxon/library/scripts)
Nitroman’s official website: Cinema4D Plugins
Pariah Studios: XBreaker updates
Version history: XBreaker forum thread
Tutorial videos: Nitroman’s YouTube