Purpose The calculation of loop decays is a tedious work, which can rarely be performed in a reasonable time by calculating all arising diagrams by hand. The Mathematica package MasterTwoallows the automated calculation of all one- and two-loop Feynman integrals reducable to scalar integrals independent of external momenta and depending on up to two different masses. In contrast to other programmes like Reduceand Form it works completely inside Mathematica. Compared to other programmes like HIP, Tracer and FeynArts , MasterTwo is much smaller. It consists of two subpackages, Fermions and Integrals. Fermions covers the standard Dirac Algebra allowing the transformation of... Read more.