SatStress is a collection of software that's useful for analyzing the tidal stresses raised on icy satellites by a time varying potential, and for comparing those stresses to tectonic features mapped on the surface of the satellite. It is based in part on the model described in "Modeling Stresses on Satellites due to Non-Synchronous Rotation and Orbital Eccentricity Using Gravitational Potential Theory"; J. Wahr, Z.A. Selvans, M.E. Mullen, A.C. Barr, G.C. Collins, M.M. Selvans, R.T. Pappalardo; Icarus (submitted 2008-03-06).