  We present the Fortran95 program Recola2 for the perturbative computation of
next-to-leading-order transition amplitudes in the Standard Model of particle
physics and extended Higgs sectors. New theories are implemented via model
files in the 't Hooft-Feynman gauge in the conventional formulation of quantum
field theory and in the Background-Field method. The present version includes
model files for the Two-Higgs-Doublet Model and the Higgs-Singlet Extension of
the Standard Model. We support standard renormalization schemes for the
Standard Model as well as many commonly used renormalization schemes in
extended Higgs sectors. Within these models the computation of
next-to-leading-order polarized amplitudes and squared amplitudes, optionally
summed over spin and colour, is fully automated for any process. Recola2 allows
the computation of colour- and spin-correlated leading-order squared amplitudes
that are needed in the dipole subtraction formalism. Recola2 is publicly
available for download at http://recola.hepforge.org.
