  Two programs for the computation of perturbative expansions of quantum field
theory amplitudes are provided. feyngen can be used to generate Feynman graphs
for Yang-Mills, QED and $\varphi^k$ theories. Using dedicated graph theoretic
tools feyngen can generate graphs of comparatively high loop orders. feyncop
implements the Hopf algebra of those Feynman graphs which incorporates the
renormalization procedure necessary to calculate finite results in perturbation
theory of the underlying quantum field theory. feyngen is validated by
comparison to explicit calculations of zero dimensional quantum field theories
and feyncop is validated using a combinatorial identity on the Hopf algebra of
graphs.
