  In this talk, the program package GOSAM is presented, which can be used for
the automated calculation of one-loop amplitudes for multi-particle processes.
The integrands are generated in terms of Feynman diagrams and can be reduced by
d-dimensional integrand-level decomposition, or tensor reduction, or a
combination of both. Through various examples we show that GOSAM can produce
one-loop amplitudes for both QCD and electroweak theory; model files for
theories Beyond the Standard Model can be linked as well.
