1)   Cosmic Heart 1.0
This application demonstrates the curious relationships wherein a tetrahedron can be inscribed in a cube in two different ways and a cube can be inscribed in a dodecahedron in 5 different ways.

 2)   3D Morphing Balls ScreenSaver 1.0
This screensaver shows on your screen various 3D shapes (polyhedrons) rotating and morphing one to another. There are 20 shapes - cube, sphere, torus, tetrahedron, octahedron and others. The edges of shapes are constructed from small balls.