ReeperX is a free rope generator for Cinema 4D. In its simplest form, ReeperX is akin to a specialized sweep nurb that has control over the number of sweeps and twists along a spline. You simply place a spline as a child of the object, and it will create a rope along the path. It works fairly well and can create some interesting abstract geometry as well. For free, it’s worth taking a look at.
[Thanks to worldpattern for the tip.]