Mathematical functions in three dimensions

Zhu3D
Free
Offline
http://kde-apps.org/

Zhu3D is an interactive OpenGL-based mathematical function viewer. You can visualize explicite functions, parametric systems and isosurfaces. The viewer supports zooming, scaling and rotating as well as filed lighting or surface properties. Special effects are animation, morphing, transparency, textures, fog and motion blur. Equation systems can be solved with a fast adaptive random search.