http://k3dsurf.sourceforge.net/

K3DSurf is a program for visualizing and manipulating multidimensional surfaces by using Mathematical equations. It’s also a "modeler" for POV-Ray in the area of parametric surfaces. It features 3D, 4D, 5D, and 6D HyperObjects visualization, full support for all functions (like the C language), support for mouse events in the drawing area, animation and morph effects, Povscript and mesh file generation, and support for VRML2 and OBJ files. More than 100 examples are provided.
Find http://k3dsurf.sourceforge.net/ at: http://k3dsurf.sourceforge.net/