http://www.splinedynamics.com/superhelix/

SuperHelix is a professional tool to create complex helix splines for 3D modeling, Animation and VFX. 

• Make convoluted objects like DNA strands, ropes, tornado-like shapes, balls of wool, woven wicker baskets, tangled cables, wires, springs, intricate knots and a lot more.Build custom deformed helical paths to animate your objects, characters or particle systems.This is a powerful time-saving tool for artists and professionals in Motion Graphics, CG Animation, 3D Design, Game Art, VFX, Graphic Design, Industrial Design and Architecture.