planets Mars Mercury Moon Icy moons software DSP Deformation, Crustal thickness, and Gravity in spherical harmonics (Python) Py_Admittance Global/localized admittance & correlation calculations for gravity analyses (Python) TeHF Elastic thickness, yield strength envelope, and heat flow calculations (Python) shtools Tools for working with spherical harmonics (Python and Fortran 95) EPFlex 1D Elastic-plastic flexure (Python)