Our company has developed the software which can be useful both scientists and to teachers at their lessons. The Rotor 3D Viewer is a program which allows to create three-dimensional presentations, and to accompany their sound comments. The program can be used also for designers, and students
who work above creation 3D models. The program borrows not enough place, is easily established on a computer, has the pleasant interface . 
I as the teacher, use it at reading a rate of lectures on the mathematician, for demonstration of models. Web-site: http://www.rotor3d.com