2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/43782Provided SUSY is realized in Nature, future colliders like the Large Hadron Collider (LHC) and a future e+e- linear collider (LC) will provide a wealth of data on SUSY phenomena. One important task will be to extract the Lagrangian parameters at the electroweak scale from the numerous measured observables and to extrapolate them to a high scale to check whether unification takes place or to learn about the SUSY breaking mechanism. To accomplish such a task, two new programs, SFITTER and Fittino, have recently been developed. This talk introduces both programs and presents first results obtained with them.5 pages, 1 figure, 2 tables, contribution to the proceedings of the International Conference on Linear Colliders (LCWS 04), Paris, April 19-23, 2004High Energy Physics - Phenomenologytext