Links Friends Theoretical and Computational Study Group (Semillero de Física Teórica y Computacional). This is a Study Group in Universidad EAFIT. Visualization tools MayaVi is is a scientific data visualizer written in Python, which uses VTK. ParaView is an open source multiple-platform application for interactive, scientific visualization. VisIt is an open source interactive parallel visualization and graphical analysis tool for viewing scientific data.